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+ Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. 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And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + + b) You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + + c) If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. (Exception: if the Program itself is interactive but + does not normally print such an announcement, your work based on + the Program is not required to print an announcement.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. + +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + a) Accompany it with the complete corresponding machine-readable + source code, which must be distributed under the terms of Sections + 1 and 2 above on a medium customarily used for software interchange; or, + + b) Accompany it with a written offer, valid for at least three + years, to give any third party, for a charge no more than your + cost of physically performing source distribution, a complete + machine-readable copy of the corresponding source code, to be + distributed under the terms of Sections 1 and 2 above on a medium + customarily used for software interchange; or, + + c) Accompany it with the information you received as to the offer + to distribute corresponding source code. (This alternative is + allowed only for noncommercial distribution and only if you + received the program in object code or executable form with such + an offer, in accord with Subsection b above.) + +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. 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Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + + 5. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + + 6. 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The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. 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Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James + Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + diff --git a/venv/Lib/site-packages/astroid-2.3.3.dist-info/INSTALLER b/venv/Lib/site-packages/astroid-2.3.3.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/venv/Lib/site-packages/astroid-2.3.3.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/venv/Lib/site-packages/astroid-2.3.3.dist-info/METADATA b/venv/Lib/site-packages/astroid-2.3.3.dist-info/METADATA new file mode 100644 index 0000000..2805693 --- /dev/null +++ b/venv/Lib/site-packages/astroid-2.3.3.dist-info/METADATA @@ -0,0 +1,117 @@ +Metadata-Version: 2.1 +Name: astroid +Version: 2.3.3 +Summary: An abstract syntax tree for Python with inference support. +Home-page: https://github.com/PyCQA/astroid +Author: Python Code Quality Authority +Author-email: code-quality@python.org +License: LGPL +Platform: UNKNOWN +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Classifier: Topic :: Software Development :: Quality Assurance +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Requires-Python: >=3.5.* +Requires-Dist: lazy-object-proxy (==1.4.*) +Requires-Dist: six (~=1.12) +Requires-Dist: wrapt (==1.11.*) +Requires-Dist: typed-ast (<1.5,>=1.4.0) ; implementation_name == "cpython" and python_version < "3.8" + +Astroid +======= + +.. image:: https://travis-ci.org/PyCQA/astroid.svg?branch=master + :target: https://travis-ci.org/PyCQA/astroid + +.. image:: https://ci.appveyor.com/api/projects/status/co3u42kunguhbh6l/branch/master?svg=true + :alt: AppVeyor Build Status + :target: https://ci.appveyor.com/project/PCManticore/astroid + +.. image:: https://coveralls.io/repos/github/PyCQA/astroid/badge.svg?branch=master + :target: https://coveralls.io/github/PyCQA/astroid?branch=master + +.. image:: https://readthedocs.org/projects/astroid/badge/?version=latest + :target: http://astroid.readthedocs.io/en/latest/?badge=latest + :alt: Documentation Status + +.. image:: https://img.shields.io/badge/code%20style-black-000000.svg + :target: https://github.com/ambv/black + +.. |tideliftlogo| image:: doc/media/Tidelift_Logos_RGB_Tidelift_Shorthand_On-White_small.png + :width: 75 + :height: 60 + :alt: Tidelift + +.. list-table:: + :widths: 10 100 + + * - |tideliftlogo| + - Professional support for astroid is available as part of the `Tidelift + Subscription`_. Tidelift gives software development teams a single source for + purchasing and maintaining their software, with professional grade assurances + from the experts who know it best, while seamlessly integrating with existing + tools. + +.. _Tidelift Subscription: https://tidelift.com/subscription/pkg/pypi-astroid?utm_source=pypi-astroid&utm_medium=referral&utm_campaign=readme + + + +What's this? +------------ + +The aim of this module is to provide a common base representation of +python source code. It is currently the library powering pylint's capabilities. + +It provides a compatible representation which comes from the `_ast` +module. It rebuilds the tree generated by the builtin _ast module by +recursively walking down the AST and building an extended ast. The new +node classes have additional methods and attributes for different +usages. They include some support for static inference and local name +scopes. Furthermore, astroid can also build partial trees by inspecting living +objects. + + +Installation +------------ + +Extract the tarball, jump into the created directory and run:: + + pip install . + + +If you want to do an editable installation, you can run:: + + pip install -e . + + +If you have any questions, please mail the code-quality@python.org +mailing list for support. See +http://mail.python.org/mailman/listinfo/code-quality for subscription +information and archives. + +Documentation +------------- +http://astroid.readthedocs.io/en/latest/ + + +Python Versions +--------------- + +astroid 2.0 is currently available for Python 3 only. If you want Python 2 +support, older versions of astroid will still supported until 2020. + +Test +---- + +Tests are in the 'test' subdirectory. 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-0,0 +1,166 @@ +# Copyright (c) 2006-2013, 2015 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016, 2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2016 Moises Lopez +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Python Abstract Syntax Tree New Generation + +The aim of this module is to provide a common base representation of +python source code for projects such as pychecker, pyreverse, +pylint... Well, actually the development of this library is essentially +governed by pylint's needs. + +It extends class defined in the python's _ast module with some +additional methods and attributes. Instance attributes are added by a +builder object, which can either generate extended ast (let's call +them astroid ;) by visiting an existent ast tree or by inspecting living +object. Methods are added by monkey patching ast classes. + +Main modules are: + +* nodes and scoped_nodes for more information about methods and + attributes added to different node classes + +* the manager contains a high level object to get astroid trees from + source files and living objects. It maintains a cache of previously + constructed tree for quick access + +* builder contains the class responsible to build astroid trees +""" + +import enum +import itertools +import os +import sys + +import wrapt + + +_Context = enum.Enum("Context", "Load Store Del") +Load = _Context.Load +Store = _Context.Store +Del = _Context.Del +del _Context + + +from .__pkginfo__ import version as __version__ + +# WARNING: internal imports order matters ! + +# pylint: disable=redefined-builtin + +# make all exception classes accessible from astroid package +from astroid.exceptions import * + +# make all node classes accessible from astroid package +from astroid.nodes import * + +# trigger extra monkey-patching +from astroid import inference + +# more stuff available +from astroid import raw_building +from astroid.bases import BaseInstance, Instance, BoundMethod, UnboundMethod +from astroid.node_classes import are_exclusive, unpack_infer +from astroid.scoped_nodes import builtin_lookup +from astroid.builder import parse, extract_node +from astroid.util import Uninferable + +# make a manager instance (borg) accessible from astroid package +from astroid.manager import AstroidManager + +MANAGER = AstroidManager() +del AstroidManager + +# transform utilities (filters and decorator) + + +# pylint: disable=dangerous-default-value +@wrapt.decorator +def _inference_tip_cached(func, instance, args, kwargs, _cache={}): + """Cache decorator used for inference tips""" + node = args[0] + try: + return iter(_cache[func, node]) + except KeyError: + result = func(*args, **kwargs) + # Need to keep an iterator around + original, copy = itertools.tee(result) + _cache[func, node] = list(copy) + return original + + +# pylint: enable=dangerous-default-value + + +def inference_tip(infer_function, raise_on_overwrite=False): + """Given an instance specific inference function, return a function to be + given to MANAGER.register_transform to set this inference function. + + :param bool raise_on_overwrite: Raise an `InferenceOverwriteError` + if the inference tip will overwrite another. Used for debugging + + Typical usage + + .. sourcecode:: python + + MANAGER.register_transform(Call, inference_tip(infer_named_tuple), + predicate) + + .. Note:: + + Using an inference tip will override + any previously set inference tip for the given + node. Use a predicate in the transform to prevent + excess overwrites. + """ + + def transform(node, infer_function=infer_function): + if ( + raise_on_overwrite + and node._explicit_inference is not None + and node._explicit_inference is not infer_function + ): + raise InferenceOverwriteError( + "Inference already set to {existing_inference}. " + "Trying to overwrite with {new_inference} for {node}".format( + existing_inference=infer_function, + new_inference=node._explicit_inference, + node=node, + ) + ) + # pylint: disable=no-value-for-parameter + node._explicit_inference = _inference_tip_cached(infer_function) + return node + + return transform + + +def register_module_extender(manager, module_name, get_extension_mod): + def transform(node): + extension_module = get_extension_mod() + for name, objs in extension_module.locals.items(): + node.locals[name] = objs + for obj in objs: + if obj.parent is extension_module: + obj.parent = node + + manager.register_transform(Module, transform, lambda n: n.name == module_name) + + +# load brain plugins +BRAIN_MODULES_DIR = os.path.join(os.path.dirname(__file__), "brain") +if BRAIN_MODULES_DIR not in sys.path: + # add it to the end of the list so user path take precedence + sys.path.append(BRAIN_MODULES_DIR) +# load modules in this directory +for module in os.listdir(BRAIN_MODULES_DIR): + if module.endswith(".py"): + __import__(module[:-3]) diff --git a/venv/Lib/site-packages/astroid/__pkginfo__.py b/venv/Lib/site-packages/astroid/__pkginfo__.py new file mode 100644 index 0000000..4a17b5d --- /dev/null +++ b/venv/Lib/site-packages/astroid/__pkginfo__.py @@ -0,0 +1,51 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2006-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2015-2017 Ceridwen +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2015 Radosław Ganczarek +# Copyright (c) 2016 Moises Lopez +# Copyright (c) 2017 Hugo +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2017 Calen Pennington +# Copyright (c) 2018 Ashley Whetter +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""astroid packaging information""" + +version = "2.3.3" +numversion = tuple(int(elem) for elem in version.split(".") if elem.isdigit()) + +extras_require = {} +install_requires = [ + "lazy_object_proxy==1.4.*", + "six~=1.12", + "wrapt==1.11.*", + 'typed-ast>=1.4.0,<1.5;implementation_name== "cpython" and python_version<"3.8"', +] + +# pylint: disable=redefined-builtin; why license is a builtin anyway? +license = "LGPL" + +author = "Python Code Quality Authority" +author_email = "code-quality@python.org" +mailinglist = "mailto://%s" % author_email +web = "https://github.com/PyCQA/astroid" + +description = "An abstract syntax tree for Python with inference support." + +classifiers = [ + "Topic :: Software Development :: Libraries :: Python Modules", + "Topic :: Software Development :: Quality Assurance", + "Programming Language :: Python", + "Programming Language :: Python :: 3", + "Programming Language :: Python :: 3.5", + "Programming Language :: Python :: 3.6", + "Programming Language :: Python :: 3.7", + "Programming Language :: Python :: Implementation :: CPython", + "Programming Language :: Python :: Implementation :: PyPy", +] diff --git a/venv/Lib/site-packages/astroid/__pycache__/__init__.cpython-37.pyc b/venv/Lib/site-packages/astroid/__pycache__/__init__.cpython-37.pyc new file mode 100644 index 0000000..eb28207 Binary files /dev/null and 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namedtuple("FunctionType", ["argtypes", "returns"]) + + +def _get_parser_module(parse_python_two: bool = False): + if parse_python_two: + parser_module = _ast_py2 + else: + parser_module = _ast_py3 + return parser_module or ast + + +def _parse(string: str, parse_python_two: bool = False): + parse_module = _get_parser_module(parse_python_two=parse_python_two) + parse_func = parse_module.parse + if _ast_py3: + if PY38: + parse_func = partial(parse_func, type_comments=True) + if not parse_python_two: + parse_func = partial(parse_func, feature_version=sys.version_info.minor) + return parse_func(string) + + +def parse_function_type_comment(type_comment: str) -> Optional[FunctionType]: + """Given a correct type comment, obtain a FunctionType object""" + if _ast_py3 is None: + return None + + func_type = _ast_py3.parse(type_comment, "", "func_type") + return FunctionType(argtypes=func_type.argtypes, returns=func_type.returns) diff --git a/venv/Lib/site-packages/astroid/arguments.py b/venv/Lib/site-packages/astroid/arguments.py new file mode 100644 index 0000000..c4bdc6d --- /dev/null +++ b/venv/Lib/site-packages/astroid/arguments.py @@ -0,0 +1,285 @@ +# Copyright (c) 2015-2016, 2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2018 Bryce Guinta +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 Anthony Sottile + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +from astroid import bases +from astroid import context as contextmod +from astroid import exceptions +from astroid import nodes +from astroid import util + + +class CallSite: + """Class for understanding arguments passed into a call site + + It needs a call context, which contains the arguments and the + keyword arguments that were passed into a given call site. + In order to infer what an argument represents, call + :meth:`infer_argument` with the corresponding function node + and the argument name. + """ + + def __init__(self, callcontext, argument_context_map=None): + if argument_context_map is None: + argument_context_map = {} + self.argument_context_map = argument_context_map + args = callcontext.args + keywords = callcontext.keywords + self.duplicated_keywords = set() + self._unpacked_args = self._unpack_args(args) + self._unpacked_kwargs = self._unpack_keywords(keywords) + + self.positional_arguments = [ + arg for arg in self._unpacked_args if arg is not util.Uninferable + ] + self.keyword_arguments = { + key: value + for key, value in self._unpacked_kwargs.items() + if value is not util.Uninferable + } + + @classmethod + def from_call(cls, call_node): + """Get a CallSite object from the given Call node.""" + callcontext = contextmod.CallContext(call_node.args, call_node.keywords) + return cls(callcontext) + + def has_invalid_arguments(self): + """Check if in the current CallSite were passed *invalid* arguments + + This can mean multiple things. For instance, if an unpacking + of an invalid object was passed, then this method will return True. + Other cases can be when the arguments can't be inferred by astroid, + for example, by passing objects which aren't known statically. + """ + return len(self.positional_arguments) != len(self._unpacked_args) + + def has_invalid_keywords(self): + """Check if in the current CallSite were passed *invalid* keyword arguments + + For instance, unpacking a dictionary with integer keys is invalid + (**{1:2}), because the keys must be strings, which will make this + method to return True. Other cases where this might return True if + objects which can't be inferred were passed. + """ + return len(self.keyword_arguments) != len(self._unpacked_kwargs) + + def _unpack_keywords(self, keywords): + values = {} + context = contextmod.InferenceContext() + context.extra_context = self.argument_context_map + for name, value in keywords: + if name is None: + # Then it's an unpacking operation (**) + try: + inferred = next(value.infer(context=context)) + except exceptions.InferenceError: + values[name] = util.Uninferable + continue + + if not isinstance(inferred, nodes.Dict): + # Not something we can work with. + values[name] = util.Uninferable + continue + + for dict_key, dict_value in inferred.items: + try: + dict_key = next(dict_key.infer(context=context)) + except exceptions.InferenceError: + values[name] = util.Uninferable + continue + if not isinstance(dict_key, nodes.Const): + values[name] = util.Uninferable + continue + if not isinstance(dict_key.value, str): + values[name] = util.Uninferable + continue + if dict_key.value in values: + # The name is already in the dictionary + values[dict_key.value] = util.Uninferable + self.duplicated_keywords.add(dict_key.value) + continue + values[dict_key.value] = dict_value + else: + values[name] = value + return values + + def _unpack_args(self, args): + values = [] + context = contextmod.InferenceContext() + context.extra_context = self.argument_context_map + for arg in args: + if isinstance(arg, nodes.Starred): + try: + inferred = next(arg.value.infer(context=context)) + except exceptions.InferenceError: + values.append(util.Uninferable) + continue + + if inferred is util.Uninferable: + values.append(util.Uninferable) + continue + if not hasattr(inferred, "elts"): + values.append(util.Uninferable) + continue + values.extend(inferred.elts) + else: + values.append(arg) + return values + + def infer_argument(self, funcnode, name, context): + """infer a function argument value according to the call context + + Arguments: + funcnode: The function being called. + name: The name of the argument whose value is being inferred. + context: Inference context object + """ + if name in self.duplicated_keywords: + raise exceptions.InferenceError( + "The arguments passed to {func!r} " " have duplicate keywords.", + call_site=self, + func=funcnode, + arg=name, + context=context, + ) + + # Look into the keywords first, maybe it's already there. + try: + return self.keyword_arguments[name].infer(context) + except KeyError: + pass + + # Too many arguments given and no variable arguments. + if len(self.positional_arguments) > len(funcnode.args.args): + if not funcnode.args.vararg: + raise exceptions.InferenceError( + "Too many positional arguments " + "passed to {func!r} that does " + "not have *args.", + call_site=self, + func=funcnode, + arg=name, + context=context, + ) + + positional = self.positional_arguments[: len(funcnode.args.args)] + vararg = self.positional_arguments[len(funcnode.args.args) :] + argindex = funcnode.args.find_argname(name)[0] + kwonlyargs = {arg.name for arg in funcnode.args.kwonlyargs} + kwargs = { + key: value + for key, value in self.keyword_arguments.items() + if key not in kwonlyargs + } + # If there are too few positionals compared to + # what the function expects to receive, check to see + # if the missing positional arguments were passed + # as keyword arguments and if so, place them into the + # positional args list. + if len(positional) < len(funcnode.args.args): + for func_arg in funcnode.args.args: + if func_arg.name in kwargs: + arg = kwargs.pop(func_arg.name) + positional.append(arg) + + if argindex is not None: + # 2. first argument of instance/class method + if argindex == 0 and funcnode.type in ("method", "classmethod"): + if context.boundnode is not None: + boundnode = context.boundnode + else: + # XXX can do better ? + boundnode = funcnode.parent.frame() + + if isinstance(boundnode, nodes.ClassDef): + # Verify that we're accessing a method + # of the metaclass through a class, as in + # `cls.metaclass_method`. In this case, the + # first argument is always the class. + method_scope = funcnode.parent.scope() + if method_scope is boundnode.metaclass(): + return iter((boundnode,)) + + if funcnode.type == "method": + if not isinstance(boundnode, bases.Instance): + boundnode = bases.Instance(boundnode) + return iter((boundnode,)) + if funcnode.type == "classmethod": + return iter((boundnode,)) + # if we have a method, extract one position + # from the index, so we'll take in account + # the extra parameter represented by `self` or `cls` + if funcnode.type in ("method", "classmethod"): + argindex -= 1 + # 2. search arg index + try: + return self.positional_arguments[argindex].infer(context) + except IndexError: + pass + + if funcnode.args.kwarg == name: + # It wants all the keywords that were passed into + # the call site. + if self.has_invalid_keywords(): + raise exceptions.InferenceError( + "Inference failed to find values for all keyword arguments " + "to {func!r}: {unpacked_kwargs!r} doesn't correspond to " + "{keyword_arguments!r}.", + keyword_arguments=self.keyword_arguments, + unpacked_kwargs=self._unpacked_kwargs, + call_site=self, + func=funcnode, + arg=name, + context=context, + ) + kwarg = nodes.Dict( + lineno=funcnode.args.lineno, + col_offset=funcnode.args.col_offset, + parent=funcnode.args, + ) + kwarg.postinit( + [(nodes.const_factory(key), value) for key, value in kwargs.items()] + ) + return iter((kwarg,)) + if funcnode.args.vararg == name: + # It wants all the args that were passed into + # the call site. + if self.has_invalid_arguments(): + raise exceptions.InferenceError( + "Inference failed to find values for all positional " + "arguments to {func!r}: {unpacked_args!r} doesn't " + "correspond to {positional_arguments!r}.", + positional_arguments=self.positional_arguments, + unpacked_args=self._unpacked_args, + call_site=self, + func=funcnode, + arg=name, + context=context, + ) + args = nodes.Tuple( + lineno=funcnode.args.lineno, + col_offset=funcnode.args.col_offset, + parent=funcnode.args, + ) + args.postinit(vararg) + return iter((args,)) + + # Check if it's a default parameter. + try: + return funcnode.args.default_value(name).infer(context) + except exceptions.NoDefault: + pass + raise exceptions.InferenceError( + "No value found for argument {name} to " "{func!r}", + call_site=self, + func=funcnode, + arg=name, + context=context, + ) diff --git a/venv/Lib/site-packages/astroid/as_string.py b/venv/Lib/site-packages/astroid/as_string.py new file mode 100644 index 0000000..3cd6e0d --- /dev/null +++ b/venv/Lib/site-packages/astroid/as_string.py @@ -0,0 +1,633 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2009-2011, 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2010 Daniel Harding +# Copyright (c) 2013-2016, 2018 Claudiu Popa +# Copyright (c) 2013-2014 Google, Inc. +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2016 Jared Garst +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2017 rr- +# Copyright (c) 2018 brendanator +# Copyright (c) 2018 Nick Drozd + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""This module renders Astroid nodes as string: + +* :func:`to_code` function return equivalent (hopefully valid) python string + +* :func:`dump` function return an internal representation of nodes found + in the tree, useful for debugging or understanding the tree structure +""" + +# pylint: disable=unused-argument + +DOC_NEWLINE = "\0" + + +class AsStringVisitor: + """Visitor to render an Astroid node as a valid python code string""" + + def __init__(self, indent): + self.indent = indent + + def __call__(self, node): + """Makes this visitor behave as a simple function""" + return node.accept(self).replace(DOC_NEWLINE, "\n") + + def _docs_dedent(self, doc): + """Stop newlines in docs being indented by self._stmt_list""" + return '\n%s"""%s"""' % (self.indent, doc.replace("\n", DOC_NEWLINE)) + + def _stmt_list(self, stmts, indent=True): + """return a list of nodes to string""" + stmts = "\n".join(nstr for nstr in [n.accept(self) for n in stmts] if nstr) + if indent: + return self.indent + stmts.replace("\n", "\n" + self.indent) + + return stmts + + def _precedence_parens(self, node, child, is_left=True): + """Wrap child in parens only if required to keep same semantics""" + if self._should_wrap(node, child, is_left): + return "(%s)" % child.accept(self) + + return child.accept(self) + + def _should_wrap(self, node, child, is_left): + """Wrap child if: + - it has lower precedence + - same precedence with position opposite to associativity direction + """ + node_precedence = node.op_precedence() + child_precedence = child.op_precedence() + + if node_precedence > child_precedence: + # 3 * (4 + 5) + return True + + if ( + node_precedence == child_precedence + and is_left != node.op_left_associative() + ): + # 3 - (4 - 5) + # (2**3)**4 + return True + + return False + + ## visit_ methods ########################################### + + def visit_arguments(self, node): + """return an astroid.Function node as string""" + return node.format_args() + + def visit_assignattr(self, node): + """return an astroid.AssAttr node as string""" + return self.visit_attribute(node) + + def visit_assert(self, node): + """return an astroid.Assert node as string""" + if node.fail: + return "assert %s, %s" % (node.test.accept(self), node.fail.accept(self)) + return "assert %s" % node.test.accept(self) + + def visit_assignname(self, node): + """return an astroid.AssName node as string""" + return node.name + + def visit_assign(self, node): + """return an astroid.Assign node as string""" + lhs = " = ".join(n.accept(self) for n in node.targets) + return "%s = %s" % (lhs, node.value.accept(self)) + + def visit_augassign(self, node): + """return an astroid.AugAssign node as string""" + return "%s %s %s" % (node.target.accept(self), node.op, node.value.accept(self)) + + def visit_annassign(self, node): + """Return an astroid.AugAssign node as string""" + + target = node.target.accept(self) + annotation = node.annotation.accept(self) + if node.value is None: + return "%s: %s" % (target, annotation) + return "%s: %s = %s" % (target, annotation, node.value.accept(self)) + + def visit_repr(self, node): + """return an astroid.Repr node as string""" + return "`%s`" % node.value.accept(self) + + def visit_binop(self, node): + """return an astroid.BinOp node as string""" + left = self._precedence_parens(node, node.left) + right = self._precedence_parens(node, node.right, is_left=False) + if node.op == "**": + return "%s%s%s" % (left, node.op, right) + + return "%s %s %s" % (left, node.op, right) + + def visit_boolop(self, node): + """return an astroid.BoolOp node as string""" + values = ["%s" % self._precedence_parens(node, n) for n in node.values] + return (" %s " % node.op).join(values) + + def visit_break(self, node): + """return an astroid.Break node as string""" + return "break" + + def visit_call(self, node): + """return an astroid.Call node as string""" + expr_str = self._precedence_parens(node, node.func) + args = [arg.accept(self) for arg in node.args] + if node.keywords: + keywords = [kwarg.accept(self) for kwarg in node.keywords] + else: + keywords = [] + + args.extend(keywords) + return "%s(%s)" % (expr_str, ", ".join(args)) + + def visit_classdef(self, node): + """return an astroid.ClassDef node as string""" + decorate = node.decorators.accept(self) if node.decorators else "" + bases = ", ".join(n.accept(self) for n in node.bases) + metaclass = node.metaclass() + if metaclass and not node.has_metaclass_hack(): + if bases: + bases = "(%s, metaclass=%s)" % (bases, metaclass.name) + else: + bases = "(metaclass=%s)" % metaclass.name + else: + bases = "(%s)" % bases if bases else "" + docs = self._docs_dedent(node.doc) if node.doc else "" + return "\n\n%sclass %s%s:%s\n%s\n" % ( + decorate, + node.name, + bases, + docs, + self._stmt_list(node.body), + ) + + def visit_compare(self, node): + """return an astroid.Compare node as string""" + rhs_str = " ".join( + [ + "%s %s" % (op, self._precedence_parens(node, expr, is_left=False)) + for op, expr in node.ops + ] + ) + return "%s %s" % (self._precedence_parens(node, node.left), rhs_str) + + def visit_comprehension(self, node): + """return an astroid.Comprehension node as string""" + ifs = "".join(" if %s" % n.accept(self) for n in node.ifs) + return "for %s in %s%s" % ( + node.target.accept(self), + node.iter.accept(self), + ifs, + ) + + def visit_const(self, node): + """return an astroid.Const node as string""" + if node.value is Ellipsis: + return "..." + return repr(node.value) + + def visit_continue(self, node): + """return an astroid.Continue node as string""" + return "continue" + + def visit_delete(self, node): # XXX check if correct + """return an astroid.Delete node as string""" + return "del %s" % ", ".join(child.accept(self) for child in node.targets) + + def visit_delattr(self, node): + """return an astroid.DelAttr node as string""" + return self.visit_attribute(node) + + def visit_delname(self, node): + """return an astroid.DelName node as string""" + return node.name + + def visit_decorators(self, node): + """return an astroid.Decorators node as string""" + return "@%s\n" % "\n@".join(item.accept(self) for item in node.nodes) + + def visit_dict(self, node): + """return an astroid.Dict node as string""" + return "{%s}" % ", ".join(self._visit_dict(node)) + + def _visit_dict(self, node): + for key, value in node.items: + key = key.accept(self) + value = value.accept(self) + if key == "**": + # It can only be a DictUnpack node. + yield key + value + else: + yield "%s: %s" % (key, value) + + def visit_dictunpack(self, node): + return "**" + + def visit_dictcomp(self, node): + """return an astroid.DictComp node as string""" + return "{%s: %s %s}" % ( + node.key.accept(self), + node.value.accept(self), + " ".join(n.accept(self) for n in node.generators), + ) + + def visit_expr(self, node): + """return an astroid.Discard node as string""" + return node.value.accept(self) + + def visit_emptynode(self, node): + """dummy method for visiting an Empty node""" + return "" + + def visit_excepthandler(self, node): + if node.type: + if node.name: + excs = "except %s, %s" % ( + node.type.accept(self), + node.name.accept(self), + ) + else: + excs = "except %s" % node.type.accept(self) + else: + excs = "except" + return "%s:\n%s" % (excs, self._stmt_list(node.body)) + + def visit_ellipsis(self, node): + """return an astroid.Ellipsis node as string""" + return "..." + + def visit_empty(self, node): + """return an Empty node as string""" + return "" + + def visit_exec(self, node): + """return an astroid.Exec node as string""" + if node.locals: + return "exec %s in %s, %s" % ( + node.expr.accept(self), + node.locals.accept(self), + node.globals.accept(self), + ) + if node.globals: + return "exec %s in %s" % (node.expr.accept(self), node.globals.accept(self)) + return "exec %s" % node.expr.accept(self) + + def visit_extslice(self, node): + """return an astroid.ExtSlice node as string""" + return ", ".join(dim.accept(self) for dim in node.dims) + + def visit_for(self, node): + """return an astroid.For node as string""" + fors = "for %s in %s:\n%s" % ( + node.target.accept(self), + node.iter.accept(self), + self._stmt_list(node.body), + ) + if node.orelse: + fors = "%s\nelse:\n%s" % (fors, self._stmt_list(node.orelse)) + return fors + + def visit_importfrom(self, node): + """return an astroid.ImportFrom node as string""" + return "from %s import %s" % ( + "." * (node.level or 0) + node.modname, + _import_string(node.names), + ) + + def visit_functiondef(self, node): + """return an astroid.Function node as string""" + decorate = node.decorators.accept(self) if node.decorators else "" + docs = self._docs_dedent(node.doc) if node.doc else "" + trailer = ":" + if node.returns: + return_annotation = " -> " + node.returns.as_string() + trailer = return_annotation + ":" + def_format = "\n%sdef %s(%s)%s%s\n%s" + return def_format % ( + decorate, + node.name, + node.args.accept(self), + trailer, + docs, + self._stmt_list(node.body), + ) + + def visit_generatorexp(self, node): + """return an astroid.GeneratorExp node as string""" + return "(%s %s)" % ( + node.elt.accept(self), + " ".join(n.accept(self) for n in node.generators), + ) + + def visit_attribute(self, node): + """return an astroid.Getattr node as string""" + return "%s.%s" % (self._precedence_parens(node, node.expr), node.attrname) + + def visit_global(self, node): + """return an astroid.Global node as string""" + return "global %s" % ", ".join(node.names) + + def visit_if(self, node): + """return an astroid.If node as string""" + ifs = ["if %s:\n%s" % (node.test.accept(self), self._stmt_list(node.body))] + if node.has_elif_block(): + ifs.append("el%s" % self._stmt_list(node.orelse, indent=False)) + elif node.orelse: + ifs.append("else:\n%s" % self._stmt_list(node.orelse)) + return "\n".join(ifs) + + def visit_ifexp(self, node): + """return an astroid.IfExp node as string""" + return "%s if %s else %s" % ( + self._precedence_parens(node, node.body, is_left=True), + self._precedence_parens(node, node.test, is_left=True), + self._precedence_parens(node, node.orelse, is_left=False), + ) + + def visit_import(self, node): + """return an astroid.Import node as string""" + return "import %s" % _import_string(node.names) + + def visit_keyword(self, node): + """return an astroid.Keyword node as string""" + if node.arg is None: + return "**%s" % node.value.accept(self) + return "%s=%s" % (node.arg, node.value.accept(self)) + + def visit_lambda(self, node): + """return an astroid.Lambda node as string""" + args = node.args.accept(self) + body = node.body.accept(self) + if args: + return "lambda %s: %s" % (args, body) + + return "lambda: %s" % body + + def visit_list(self, node): + """return an astroid.List node as string""" + return "[%s]" % ", ".join(child.accept(self) for child in node.elts) + + def visit_listcomp(self, node): + """return an astroid.ListComp node as string""" + return "[%s %s]" % ( + node.elt.accept(self), + " ".join(n.accept(self) for n in node.generators), + ) + + def visit_module(self, node): + """return an astroid.Module node as string""" + docs = '"""%s"""\n\n' % node.doc if node.doc else "" + return docs + "\n".join(n.accept(self) for n in node.body) + "\n\n" + + def visit_name(self, node): + """return an astroid.Name node as string""" + return node.name + + def visit_pass(self, node): + """return an astroid.Pass node as string""" + return "pass" + + def visit_print(self, node): + """return an astroid.Print node as string""" + nodes = ", ".join(n.accept(self) for n in node.values) + if not node.nl: + nodes = "%s," % nodes + if node.dest: + return "print >> %s, %s" % (node.dest.accept(self), nodes) + return "print %s" % nodes + + def visit_raise(self, node): + """return an astroid.Raise node as string""" + if node.exc: + if node.inst: + if node.tback: + return "raise %s, %s, %s" % ( + node.exc.accept(self), + node.inst.accept(self), + node.tback.accept(self), + ) + return "raise %s, %s" % (node.exc.accept(self), node.inst.accept(self)) + return "raise %s" % node.exc.accept(self) + return "raise" + + def visit_return(self, node): + """return an astroid.Return node as string""" + if node.is_tuple_return() and len(node.value.elts) > 1: + elts = [child.accept(self) for child in node.value.elts] + return "return %s" % ", ".join(elts) + + if node.value: + return "return %s" % node.value.accept(self) + + return "return" + + def visit_index(self, node): + """return an astroid.Index node as string""" + return node.value.accept(self) + + def visit_set(self, node): + """return an astroid.Set node as string""" + return "{%s}" % ", ".join(child.accept(self) for child in node.elts) + + def visit_setcomp(self, node): + """return an astroid.SetComp node as string""" + return "{%s %s}" % ( + node.elt.accept(self), + " ".join(n.accept(self) for n in node.generators), + ) + + def visit_slice(self, node): + """return an astroid.Slice node as string""" + lower = node.lower.accept(self) if node.lower else "" + upper = node.upper.accept(self) if node.upper else "" + step = node.step.accept(self) if node.step else "" + if step: + return "%s:%s:%s" % (lower, upper, step) + return "%s:%s" % (lower, upper) + + def visit_subscript(self, node): + """return an astroid.Subscript node as string""" + idx = node.slice + if idx.__class__.__name__.lower() == "index": + idx = idx.value + idxstr = idx.accept(self) + if idx.__class__.__name__.lower() == "tuple" and idx.elts: + # Remove parenthesis in tuple and extended slice. + # a[(::1, 1:)] is not valid syntax. + idxstr = idxstr[1:-1] + return "%s[%s]" % (self._precedence_parens(node, node.value), idxstr) + + def visit_tryexcept(self, node): + """return an astroid.TryExcept node as string""" + trys = ["try:\n%s" % self._stmt_list(node.body)] + for handler in node.handlers: + trys.append(handler.accept(self)) + if node.orelse: + trys.append("else:\n%s" % self._stmt_list(node.orelse)) + return "\n".join(trys) + + def visit_tryfinally(self, node): + """return an astroid.TryFinally node as string""" + return "try:\n%s\nfinally:\n%s" % ( + self._stmt_list(node.body), + self._stmt_list(node.finalbody), + ) + + def visit_tuple(self, node): + """return an astroid.Tuple node as string""" + if len(node.elts) == 1: + return "(%s, )" % node.elts[0].accept(self) + return "(%s)" % ", ".join(child.accept(self) for child in node.elts) + + def visit_unaryop(self, node): + """return an astroid.UnaryOp node as string""" + if node.op == "not": + operator = "not " + else: + operator = node.op + return "%s%s" % (operator, self._precedence_parens(node, node.operand)) + + def visit_while(self, node): + """return an astroid.While node as string""" + whiles = "while %s:\n%s" % (node.test.accept(self), self._stmt_list(node.body)) + if node.orelse: + whiles = "%s\nelse:\n%s" % (whiles, self._stmt_list(node.orelse)) + return whiles + + def visit_with(self, node): # 'with' without 'as' is possible + """return an astroid.With node as string""" + items = ", ".join( + ("%s" % expr.accept(self)) + (vars and " as %s" % (vars.accept(self)) or "") + for expr, vars in node.items + ) + return "with %s:\n%s" % (items, self._stmt_list(node.body)) + + def visit_yield(self, node): + """yield an ast.Yield node as string""" + yi_val = (" " + node.value.accept(self)) if node.value else "" + expr = "yield" + yi_val + if node.parent.is_statement: + return expr + + return "(%s)" % (expr,) + + def visit_starred(self, node): + """return Starred node as string""" + return "*" + node.value.accept(self) + + # These aren't for real AST nodes, but for inference objects. + + def visit_frozenset(self, node): + return node.parent.accept(self) + + def visit_super(self, node): + return node.parent.accept(self) + + def visit_uninferable(self, node): + return str(node) + + +class AsStringVisitor3(AsStringVisitor): + """AsStringVisitor3 overwrites some AsStringVisitor methods""" + + def visit_excepthandler(self, node): + if node.type: + if node.name: + excs = "except %s as %s" % ( + node.type.accept(self), + node.name.accept(self), + ) + else: + excs = "except %s" % node.type.accept(self) + else: + excs = "except" + return "%s:\n%s" % (excs, self._stmt_list(node.body)) + + def visit_nonlocal(self, node): + """return an astroid.Nonlocal node as string""" + return "nonlocal %s" % ", ".join(node.names) + + def visit_raise(self, node): + """return an astroid.Raise node as string""" + if node.exc: + if node.cause: + return "raise %s from %s" % ( + node.exc.accept(self), + node.cause.accept(self), + ) + return "raise %s" % node.exc.accept(self) + return "raise" + + def visit_yieldfrom(self, node): + """ Return an astroid.YieldFrom node as string. """ + yi_val = (" " + node.value.accept(self)) if node.value else "" + expr = "yield from" + yi_val + if node.parent.is_statement: + return expr + + return "(%s)" % (expr,) + + def visit_asyncfunctiondef(self, node): + function = super(AsStringVisitor3, self).visit_functiondef(node) + return "async " + function.strip() + + def visit_await(self, node): + return "await %s" % node.value.accept(self) + + def visit_asyncwith(self, node): + return "async %s" % self.visit_with(node) + + def visit_asyncfor(self, node): + return "async %s" % self.visit_for(node) + + def visit_joinedstr(self, node): + # Special treatment for constants, + # as we want to join literals not reprs + string = "".join( + value.value if type(value).__name__ == "Const" else value.accept(self) + for value in node.values + ) + return "f'%s'" % string + + def visit_formattedvalue(self, node): + return "{%s}" % node.value.accept(self) + + def visit_comprehension(self, node): + """return an astroid.Comprehension node as string""" + return "%s%s" % ( + "async " if node.is_async else "", + super(AsStringVisitor3, self).visit_comprehension(node), + ) + + def visit_namedexpr(self, node): + """Return an assignment expression node as string""" + target = node.target.accept(self) + value = node.value.accept(self) + return "%s := %s" % (target, value) + + +def _import_string(names): + """return a list of (name, asname) formatted as a string""" + _names = [] + for name, asname in names: + if asname is not None: + _names.append("%s as %s" % (name, asname)) + else: + _names.append(name) + return ", ".join(_names) + + +AsStringVisitor = AsStringVisitor3 + +# This sets the default indent to 4 spaces. +to_code = AsStringVisitor(" ") diff --git a/venv/Lib/site-packages/astroid/bases.py b/venv/Lib/site-packages/astroid/bases.py new file mode 100644 index 0000000..d5b042a --- /dev/null +++ b/venv/Lib/site-packages/astroid/bases.py @@ -0,0 +1,542 @@ +# Copyright (c) 2009-2011, 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2012 FELD Boris +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2016-2017 Derek Gustafson +# Copyright (c) 2017 Calen Pennington +# Copyright (c) 2018 Bryce Guinta +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 Daniel Colascione + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""This module contains base classes and functions for the nodes and some +inference utils. +""" + +import builtins +import collections + +from astroid import context as contextmod +from astroid import exceptions +from astroid import util + +objectmodel = util.lazy_import("interpreter.objectmodel") +helpers = util.lazy_import("helpers") +BUILTINS = builtins.__name__ +manager = util.lazy_import("manager") +MANAGER = manager.AstroidManager() + +# TODO: check if needs special treatment +BUILTINS = "builtins" +BOOL_SPECIAL_METHOD = "__bool__" + +PROPERTIES = {BUILTINS + ".property", "abc.abstractproperty"} +# List of possible property names. We use this list in order +# to see if a method is a property or not. This should be +# pretty reliable and fast, the alternative being to check each +# decorator to see if its a real property-like descriptor, which +# can be too complicated. +# Also, these aren't qualified, because each project can +# define them, we shouldn't expect to know every possible +# property-like decorator! +POSSIBLE_PROPERTIES = { + "cached_property", + "cachedproperty", + "lazyproperty", + "lazy_property", + "reify", + "lazyattribute", + "lazy_attribute", + "LazyProperty", + "lazy", + "cache_readonly", +} + + +def _is_property(meth): + if PROPERTIES.intersection(meth.decoratornames()): + return True + stripped = { + name.split(".")[-1] + for name in meth.decoratornames() + if name is not util.Uninferable + } + if any(name in stripped for name in POSSIBLE_PROPERTIES): + return True + + # Lookup for subclasses of *property* + if not meth.decorators: + return False + for decorator in meth.decorators.nodes or (): + inferred = helpers.safe_infer(decorator) + if inferred is None or inferred is util.Uninferable: + continue + if inferred.__class__.__name__ == "ClassDef": + for base_class in inferred.bases: + if base_class.__class__.__name__ != "Name": + continue + module, _ = base_class.lookup(base_class.name) + if module.name == BUILTINS and base_class.name == "property": + return True + + return False + + +class Proxy: + """a simple proxy object + + Note: + + Subclasses of this object will need a custom __getattr__ + if new instance attributes are created. See the Const class + """ + + _proxied = None # proxied object may be set by class or by instance + + def __init__(self, proxied=None): + if proxied is not None: + self._proxied = proxied + + def __getattr__(self, name): + if name == "_proxied": + return getattr(self.__class__, "_proxied") + if name in self.__dict__: + return self.__dict__[name] + return getattr(self._proxied, name) + + def infer(self, context=None): + yield self + + +def _infer_stmts(stmts, context, frame=None): + """Return an iterator on statements inferred by each statement in *stmts*.""" + inferred = False + if context is not None: + name = context.lookupname + context = context.clone() + else: + name = None + context = contextmod.InferenceContext() + + for stmt in stmts: + if stmt is util.Uninferable: + yield stmt + inferred = True + continue + context.lookupname = stmt._infer_name(frame, name) + try: + for inferred in stmt.infer(context=context): + yield inferred + inferred = True + except exceptions.NameInferenceError: + continue + except exceptions.InferenceError: + yield util.Uninferable + inferred = True + if not inferred: + raise exceptions.InferenceError( + "Inference failed for all members of {stmts!r}.", + stmts=stmts, + frame=frame, + context=context, + ) + + +def _infer_method_result_truth(instance, method_name, context): + # Get the method from the instance and try to infer + # its return's truth value. + meth = next(instance.igetattr(method_name, context=context), None) + if meth and hasattr(meth, "infer_call_result"): + if not meth.callable(): + return util.Uninferable + try: + for value in meth.infer_call_result(instance, context=context): + if value is util.Uninferable: + return value + + inferred = next(value.infer(context=context)) + return inferred.bool_value() + except exceptions.InferenceError: + pass + return util.Uninferable + + +class BaseInstance(Proxy): + """An instance base class, which provides lookup methods for potential instances.""" + + special_attributes = None + + def display_type(self): + return "Instance of" + + def getattr(self, name, context=None, lookupclass=True): + try: + values = self._proxied.instance_attr(name, context) + except exceptions.AttributeInferenceError as exc: + if self.special_attributes and name in self.special_attributes: + return [self.special_attributes.lookup(name)] + + if lookupclass: + # Class attributes not available through the instance + # unless they are explicitly defined. + return self._proxied.getattr(name, context, class_context=False) + + raise exceptions.AttributeInferenceError( + target=self, attribute=name, context=context + ) from exc + # since we've no context information, return matching class members as + # well + if lookupclass: + try: + return values + self._proxied.getattr( + name, context, class_context=False + ) + except exceptions.AttributeInferenceError: + pass + return values + + def igetattr(self, name, context=None): + """inferred getattr""" + if not context: + context = contextmod.InferenceContext() + try: + # avoid recursively inferring the same attr on the same class + if context.push((self._proxied, name)): + raise exceptions.InferenceError( + message="Cannot infer the same attribute again", + node=self, + context=context, + ) + + # XXX frame should be self._proxied, or not ? + get_attr = self.getattr(name, context, lookupclass=False) + yield from _infer_stmts( + self._wrap_attr(get_attr, context), context, frame=self + ) + except exceptions.AttributeInferenceError as error: + try: + # fallback to class.igetattr since it has some logic to handle + # descriptors + # But only if the _proxied is the Class. + if self._proxied.__class__.__name__ != "ClassDef": + raise + attrs = self._proxied.igetattr(name, context, class_context=False) + yield from self._wrap_attr(attrs, context) + except exceptions.AttributeInferenceError as error: + raise exceptions.InferenceError(**vars(error)) from error + + def _wrap_attr(self, attrs, context=None): + """wrap bound methods of attrs in a InstanceMethod proxies""" + for attr in attrs: + if isinstance(attr, UnboundMethod): + if _is_property(attr): + yield from attr.infer_call_result(self, context) + else: + yield BoundMethod(attr, self) + elif hasattr(attr, "name") and attr.name == "": + if attr.args.args and attr.args.args[0].name == "self": + yield BoundMethod(attr, self) + continue + yield attr + else: + yield attr + + def infer_call_result(self, caller, context=None): + """infer what a class instance is returning when called""" + context = contextmod.bind_context_to_node(context, self) + inferred = False + for node in self._proxied.igetattr("__call__", context): + if node is util.Uninferable or not node.callable(): + continue + for res in node.infer_call_result(caller, context): + inferred = True + yield res + if not inferred: + raise exceptions.InferenceError(node=self, caller=caller, context=context) + + +class Instance(BaseInstance): + """A special node representing a class instance.""" + + # pylint: disable=unnecessary-lambda + special_attributes = util.lazy_descriptor(lambda: objectmodel.InstanceModel()) + + def __repr__(self): + return "" % ( + self._proxied.root().name, + self._proxied.name, + id(self), + ) + + def __str__(self): + return "Instance of %s.%s" % (self._proxied.root().name, self._proxied.name) + + def callable(self): + try: + self._proxied.getattr("__call__", class_context=False) + return True + except exceptions.AttributeInferenceError: + return False + + def pytype(self): + return self._proxied.qname() + + def display_type(self): + return "Instance of" + + def bool_value(self): + """Infer the truth value for an Instance + + The truth value of an instance is determined by these conditions: + + * if it implements __bool__ on Python 3 or __nonzero__ + on Python 2, then its bool value will be determined by + calling this special method and checking its result. + * when this method is not defined, __len__() is called, if it + is defined, and the object is considered true if its result is + nonzero. If a class defines neither __len__() nor __bool__(), + all its instances are considered true. + """ + context = contextmod.InferenceContext() + context.callcontext = contextmod.CallContext(args=[]) + context.boundnode = self + + try: + result = _infer_method_result_truth(self, BOOL_SPECIAL_METHOD, context) + except (exceptions.InferenceError, exceptions.AttributeInferenceError): + # Fallback to __len__. + try: + result = _infer_method_result_truth(self, "__len__", context) + except (exceptions.AttributeInferenceError, exceptions.InferenceError): + return True + return result + + # This is set in inference.py. + def getitem(self, index, context=None): + pass + + +class UnboundMethod(Proxy): + """a special node representing a method not bound to an instance""" + + # pylint: disable=unnecessary-lambda + special_attributes = util.lazy_descriptor(lambda: objectmodel.UnboundMethodModel()) + + def __repr__(self): + frame = self._proxied.parent.frame() + return "<%s %s of %s at 0x%s" % ( + self.__class__.__name__, + self._proxied.name, + frame.qname(), + id(self), + ) + + def implicit_parameters(self): + return 0 + + def is_bound(self): + return False + + def getattr(self, name, context=None): + if name in self.special_attributes: + return [self.special_attributes.lookup(name)] + return self._proxied.getattr(name, context) + + def igetattr(self, name, context=None): + if name in self.special_attributes: + return iter((self.special_attributes.lookup(name),)) + return self._proxied.igetattr(name, context) + + def infer_call_result(self, caller, context): + """ + The boundnode of the regular context with a function called + on ``object.__new__`` will be of type ``object``, + which is incorrect for the argument in general. + If no context is given the ``object.__new__`` call argument will + correctly inferred except when inside a call that requires + the additional context (such as a classmethod) of the boundnode + to determine which class the method was called from + """ + + # If we're unbound method __new__ of builtin object, the result is an + # instance of the class given as first argument. + if ( + self._proxied.name == "__new__" + and self._proxied.parent.frame().qname() == "%s.object" % BUILTINS + ): + if caller.args: + node_context = context.extra_context.get(caller.args[0]) + infer = caller.args[0].infer(context=node_context) + else: + infer = [] + return (Instance(x) if x is not util.Uninferable else x for x in infer) + return self._proxied.infer_call_result(caller, context) + + def bool_value(self): + return True + + +class BoundMethod(UnboundMethod): + """a special node representing a method bound to an instance""" + + # pylint: disable=unnecessary-lambda + special_attributes = util.lazy_descriptor(lambda: objectmodel.BoundMethodModel()) + + def __init__(self, proxy, bound): + UnboundMethod.__init__(self, proxy) + self.bound = bound + + def implicit_parameters(self): + return 1 + + def is_bound(self): + return True + + def _infer_type_new_call(self, caller, context): + """Try to infer what type.__new__(mcs, name, bases, attrs) returns. + + In order for such call to be valid, the metaclass needs to be + a subtype of ``type``, the name needs to be a string, the bases + needs to be a tuple of classes + """ + # pylint: disable=import-outside-toplevel; circular import + from astroid import node_classes + + # Verify the metaclass + mcs = next(caller.args[0].infer(context=context)) + if mcs.__class__.__name__ != "ClassDef": + # Not a valid first argument. + return None + if not mcs.is_subtype_of("%s.type" % BUILTINS): + # Not a valid metaclass. + return None + + # Verify the name + name = next(caller.args[1].infer(context=context)) + if name.__class__.__name__ != "Const": + # Not a valid name, needs to be a const. + return None + if not isinstance(name.value, str): + # Needs to be a string. + return None + + # Verify the bases + bases = next(caller.args[2].infer(context=context)) + if bases.__class__.__name__ != "Tuple": + # Needs to be a tuple. + return None + inferred_bases = [next(elt.infer(context=context)) for elt in bases.elts] + if any(base.__class__.__name__ != "ClassDef" for base in inferred_bases): + # All the bases needs to be Classes + return None + + # Verify the attributes. + attrs = next(caller.args[3].infer(context=context)) + if attrs.__class__.__name__ != "Dict": + # Needs to be a dictionary. + return None + cls_locals = collections.defaultdict(list) + for key, value in attrs.items: + key = next(key.infer(context=context)) + value = next(value.infer(context=context)) + # Ignore non string keys + if key.__class__.__name__ == "Const" and isinstance(key.value, str): + cls_locals[key.value].append(value) + + # Build the class from now. + cls = mcs.__class__( + name=name.value, + lineno=caller.lineno, + col_offset=caller.col_offset, + parent=caller, + ) + empty = node_classes.Pass() + cls.postinit( + bases=bases.elts, + body=[empty], + decorators=[], + newstyle=True, + metaclass=mcs, + keywords=[], + ) + cls.locals = cls_locals + return cls + + def infer_call_result(self, caller, context=None): + context = contextmod.bind_context_to_node(context, self.bound) + if ( + self.bound.__class__.__name__ == "ClassDef" + and self.bound.name == "type" + and self.name == "__new__" + and len(caller.args) == 4 + ): + # Check if we have a ``type.__new__(mcs, name, bases, attrs)`` call. + new_cls = self._infer_type_new_call(caller, context) + if new_cls: + return iter((new_cls,)) + + return super(BoundMethod, self).infer_call_result(caller, context) + + def bool_value(self): + return True + + +class Generator(BaseInstance): + """a special node representing a generator. + + Proxied class is set once for all in raw_building. + """ + + # pylint: disable=unnecessary-lambda + special_attributes = util.lazy_descriptor(lambda: objectmodel.GeneratorModel()) + + # pylint: disable=super-init-not-called + def __init__(self, parent=None): + self.parent = parent + + def 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+from astroid import MANAGER, arguments, nodes, inference_tip, UseInferenceDefault + + +def infer_namespace(node, context=None): + callsite = arguments.CallSite.from_call(node) + if not callsite.keyword_arguments: + # Cannot make sense of it. + raise UseInferenceDefault() + + class_node = nodes.ClassDef("Namespace", "docstring") + class_node.parent = node.parent + for attr in set(callsite.keyword_arguments): + fake_node = nodes.EmptyNode() + fake_node.parent = class_node + fake_node.attrname = attr + class_node.instance_attrs[attr] = [fake_node] + return iter((class_node.instantiate_class(),)) + + +def _looks_like_namespace(node): + func = node.func + if isinstance(func, nodes.Attribute): + return ( + func.attrname == "Namespace" + and isinstance(func.expr, nodes.Name) + and func.expr.name == "argparse" + ) + return False + + +MANAGER.register_transform( + nodes.Call, inference_tip(infer_namespace), _looks_like_namespace +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_attrs.py b/venv/Lib/site-packages/astroid/brain/brain_attrs.py new file mode 100644 index 0000000..670736f --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_attrs.py @@ -0,0 +1,65 @@ +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +""" +Astroid hook for the attrs library + +Without this hook pylint reports unsupported-assignment-operation +for attrs classes +""" + +import astroid +from astroid import MANAGER + + +ATTRIB_NAMES = frozenset(("attr.ib", "attrib", "attr.attrib")) +ATTRS_NAMES = frozenset(("attr.s", "attrs", "attr.attrs", "attr.attributes")) + + +def is_decorated_with_attrs(node, decorator_names=ATTRS_NAMES): + """Return True if a decorated node has + an attr decorator applied.""" + if not node.decorators: + return False + for decorator_attribute in node.decorators.nodes: + if isinstance(decorator_attribute, astroid.Call): # decorator with arguments + decorator_attribute = decorator_attribute.func + if decorator_attribute.as_string() in decorator_names: + return True + return False + + +def attr_attributes_transform(node): + """Given that the ClassNode has an attr decorator, + rewrite class attributes as instance attributes + """ + # Astroid can't infer this attribute properly + # Prevents https://github.com/PyCQA/pylint/issues/1884 + node.locals["__attrs_attrs__"] = [astroid.Unknown(parent=node)] + + for cdefbodynode in node.body: + if not isinstance(cdefbodynode, (astroid.Assign, astroid.AnnAssign)): + continue + if isinstance(cdefbodynode.value, astroid.Call): + if cdefbodynode.value.func.as_string() not in ATTRIB_NAMES: + continue + else: + continue + targets = ( + cdefbodynode.targets + if hasattr(cdefbodynode, "targets") + else [cdefbodynode.target] + ) + for target in targets: + + rhs_node = astroid.Unknown( + lineno=cdefbodynode.lineno, + col_offset=cdefbodynode.col_offset, + parent=cdefbodynode, + ) + node.locals[target.name] = [rhs_node] + node.instance_attrs[target.name] = [rhs_node] + + +MANAGER.register_transform( + astroid.ClassDef, attr_attributes_transform, is_decorated_with_attrs +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_builtin_inference.py b/venv/Lib/site-packages/astroid/brain/brain_builtin_inference.py new file mode 100644 index 0000000..2dd7cc5 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_builtin_inference.py @@ -0,0 +1,829 @@ +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014-2015 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Rene Zhang +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid hooks for various builtins.""" + +from functools import partial +from textwrap import dedent + +import six +from astroid import ( + MANAGER, + UseInferenceDefault, + AttributeInferenceError, + inference_tip, + InferenceError, + NameInferenceError, + AstroidTypeError, + MroError, +) +from astroid import arguments +from astroid.builder import AstroidBuilder +from astroid import helpers +from astroid import nodes +from astroid import objects +from astroid import scoped_nodes +from astroid import util + + +OBJECT_DUNDER_NEW = "object.__new__" + + +def _extend_str(class_node, rvalue): + """function to extend builtin str/unicode class""" + code = dedent( + """ + class whatever(object): + def join(self, iterable): + return {rvalue} + def replace(self, old, new, count=None): + return {rvalue} + def format(self, *args, **kwargs): + return {rvalue} + def encode(self, encoding='ascii', errors=None): + return '' + def decode(self, encoding='ascii', errors=None): + return u'' + def capitalize(self): + return {rvalue} + def title(self): + return {rvalue} + def lower(self): + return {rvalue} + def upper(self): + return {rvalue} + def swapcase(self): + return {rvalue} + def index(self, sub, start=None, end=None): + return 0 + def find(self, sub, start=None, end=None): + return 0 + def count(self, sub, start=None, end=None): + return 0 + def strip(self, chars=None): + return {rvalue} + def lstrip(self, chars=None): + return {rvalue} + def rstrip(self, chars=None): + return {rvalue} + def rjust(self, width, fillchar=None): + return {rvalue} + def center(self, width, fillchar=None): + return {rvalue} + def ljust(self, width, fillchar=None): + return {rvalue} + """ + ) + code = code.format(rvalue=rvalue) + fake = AstroidBuilder(MANAGER).string_build(code)["whatever"] + for method in fake.mymethods(): + method.parent = class_node + method.lineno = None + method.col_offset = None + if "__class__" in method.locals: + method.locals["__class__"] = [class_node] + class_node.locals[method.name] = [method] + method.parent = class_node + + +def _extend_builtins(class_transforms): + builtin_ast = MANAGER.builtins_module + for class_name, transform in class_transforms.items(): + transform(builtin_ast[class_name]) + + +_extend_builtins( + { + "bytes": partial(_extend_str, rvalue="b''"), + "str": partial(_extend_str, rvalue="''"), + } +) + + +def _builtin_filter_predicate(node, builtin_name): + if isinstance(node.func, nodes.Name) and node.func.name == builtin_name: + return True + if isinstance(node.func, nodes.Attribute): + return ( + node.func.attrname == "fromkeys" + and isinstance(node.func.expr, nodes.Name) + and node.func.expr.name == "dict" + ) + return False + + +def register_builtin_transform(transform, builtin_name): + """Register a new transform function for the given *builtin_name*. + + The transform function must accept two parameters, a node and + an optional context. + """ + + def _transform_wrapper(node, context=None): + result = transform(node, context=context) + if result: + if not result.parent: + # Let the transformation function determine + # the parent for its result. Otherwise, + # we set it to be the node we transformed from. + result.parent = node + + if result.lineno is None: + result.lineno = node.lineno + if result.col_offset is None: + result.col_offset = node.col_offset + return iter([result]) + + MANAGER.register_transform( + nodes.Call, + inference_tip(_transform_wrapper), + partial(_builtin_filter_predicate, builtin_name=builtin_name), + ) + + +def _container_generic_inference(node, context, node_type, transform): + args = node.args + if not args: + return node_type() + if len(node.args) > 1: + raise UseInferenceDefault() + + arg, = args + transformed = transform(arg) + if not transformed: + try: + inferred = next(arg.infer(context=context)) + except (InferenceError, StopIteration): + raise UseInferenceDefault() + if inferred is util.Uninferable: + raise UseInferenceDefault() + transformed = transform(inferred) + if not transformed or transformed is util.Uninferable: + raise UseInferenceDefault() + return transformed + + +def _container_generic_transform(arg, klass, iterables, build_elts): + if isinstance(arg, klass): + return arg + elif isinstance(arg, iterables): + if all(isinstance(elt, nodes.Const) for elt in arg.elts): + elts = [elt.value for elt in arg.elts] + else: + # TODO: Does not handle deduplication for sets. + elts = filter(None, map(helpers.safe_infer, arg.elts)) + elif isinstance(arg, nodes.Dict): + # Dicts need to have consts as strings already. + if not all(isinstance(elt[0], nodes.Const) for elt in arg.items): + raise UseInferenceDefault() + elts = [item[0].value for item in arg.items] + elif isinstance(arg, nodes.Const) and isinstance( + arg.value, (six.string_types, six.binary_type) + ): + elts = arg.value + else: + return + return klass.from_elements(elts=build_elts(elts)) + + +def _infer_builtin_container( + node, context, klass=None, iterables=None, build_elts=None +): + transform_func = partial( + _container_generic_transform, + klass=klass, + iterables=iterables, + build_elts=build_elts, + ) + + return _container_generic_inference(node, context, klass, transform_func) + + +# pylint: disable=invalid-name +infer_tuple = partial( + _infer_builtin_container, + klass=nodes.Tuple, + iterables=( + nodes.List, + nodes.Set, + objects.FrozenSet, + objects.DictItems, + objects.DictKeys, + objects.DictValues, + ), + build_elts=tuple, +) + +infer_list = partial( + _infer_builtin_container, + klass=nodes.List, + iterables=( + nodes.Tuple, + nodes.Set, + objects.FrozenSet, + objects.DictItems, + objects.DictKeys, + objects.DictValues, + ), + build_elts=list, +) + +infer_set = partial( + _infer_builtin_container, + klass=nodes.Set, + iterables=(nodes.List, nodes.Tuple, objects.FrozenSet, objects.DictKeys), + build_elts=set, +) + +infer_frozenset = partial( + _infer_builtin_container, + klass=objects.FrozenSet, + iterables=(nodes.List, nodes.Tuple, nodes.Set, objects.FrozenSet, objects.DictKeys), + build_elts=frozenset, +) + + +def _get_elts(arg, context): + is_iterable = lambda n: isinstance(n, (nodes.List, nodes.Tuple, nodes.Set)) + try: + inferred = next(arg.infer(context)) + except (InferenceError, NameInferenceError): + raise UseInferenceDefault() + if isinstance(inferred, nodes.Dict): + items = inferred.items + elif is_iterable(inferred): + items = [] + for elt in inferred.elts: + # If an item is not a pair of two items, + # then fallback to the default inference. + # Also, take in consideration only hashable items, + # tuples and consts. We are choosing Names as well. + if not is_iterable(elt): + raise UseInferenceDefault() + if len(elt.elts) != 2: + raise UseInferenceDefault() + if not isinstance(elt.elts[0], (nodes.Tuple, nodes.Const, nodes.Name)): + raise UseInferenceDefault() + items.append(tuple(elt.elts)) + else: + raise UseInferenceDefault() + return items + + +def infer_dict(node, context=None): + """Try to infer a dict call to a Dict node. + + The function treats the following cases: + + * dict() + * dict(mapping) + * dict(iterable) + * dict(iterable, **kwargs) + * dict(mapping, **kwargs) + * dict(**kwargs) + + If a case can't be inferred, we'll fallback to default inference. + """ + call = arguments.CallSite.from_call(node) + if call.has_invalid_arguments() or call.has_invalid_keywords(): + raise UseInferenceDefault + + args = call.positional_arguments + kwargs = list(call.keyword_arguments.items()) + + if not args and not kwargs: + # dict() + return nodes.Dict() + elif kwargs and not args: + # dict(a=1, b=2, c=4) + items = [(nodes.Const(key), value) for key, value in kwargs] + elif len(args) == 1 and kwargs: + # dict(some_iterable, b=2, c=4) + elts = _get_elts(args[0], context) + keys = [(nodes.Const(key), value) for key, value in kwargs] + items = elts + keys + elif len(args) == 1: + items = _get_elts(args[0], context) + else: + raise UseInferenceDefault() + + value = nodes.Dict( + col_offset=node.col_offset, lineno=node.lineno, parent=node.parent + ) + value.postinit(items) + return value + + +def infer_super(node, context=None): + """Understand super calls. + + There are some restrictions for what can be understood: + + * unbounded super (one argument form) is not understood. + + * if the super call is not inside a function (classmethod or method), + then the default inference will be used. + + * if the super arguments can't be inferred, the default inference + will be used. + """ + if len(node.args) == 1: + # Ignore unbounded super. + raise UseInferenceDefault + + scope = node.scope() + if not isinstance(scope, nodes.FunctionDef): + # Ignore non-method uses of super. + raise UseInferenceDefault + if scope.type not in ("classmethod", "method"): + # Not interested in staticmethods. + raise UseInferenceDefault + + cls = scoped_nodes.get_wrapping_class(scope) + if not len(node.args): + mro_pointer = cls + # In we are in a classmethod, the interpreter will fill + # automatically the class as the second argument, not an instance. + if scope.type == "classmethod": + mro_type = cls + else: + mro_type = cls.instantiate_class() + else: + try: + mro_pointer = next(node.args[0].infer(context=context)) + except InferenceError: + raise UseInferenceDefault + try: + mro_type = next(node.args[1].infer(context=context)) + except InferenceError: + raise UseInferenceDefault + + if mro_pointer is util.Uninferable or mro_type is util.Uninferable: + # No way we could understand this. + raise UseInferenceDefault + + super_obj = objects.Super( + mro_pointer=mro_pointer, mro_type=mro_type, self_class=cls, scope=scope + ) + super_obj.parent = node + return super_obj + + +def _infer_getattr_args(node, context): + if len(node.args) not in (2, 3): + # Not a valid getattr call. + raise UseInferenceDefault + + try: + obj = next(node.args[0].infer(context=context)) + attr = next(node.args[1].infer(context=context)) + except InferenceError: + raise UseInferenceDefault + + if obj is util.Uninferable or attr is util.Uninferable: + # If one of the arguments is something we can't infer, + # then also make the result of the getattr call something + # which is unknown. + return util.Uninferable, util.Uninferable + + is_string = isinstance(attr, nodes.Const) and isinstance( + attr.value, six.string_types + ) + if not is_string: + raise UseInferenceDefault + + return obj, attr.value + + +def infer_getattr(node, context=None): + """Understand getattr calls + + If one of the arguments is an Uninferable object, then the + result will be an Uninferable object. Otherwise, the normal attribute + lookup will be done. + """ + obj, attr = _infer_getattr_args(node, context) + if ( + obj is util.Uninferable + or attr is util.Uninferable + or not hasattr(obj, "igetattr") + ): + return util.Uninferable + + try: + return next(obj.igetattr(attr, context=context)) + except (StopIteration, InferenceError, AttributeInferenceError): + if len(node.args) == 3: + # Try to infer the default and return it instead. + try: + return next(node.args[2].infer(context=context)) + except InferenceError: + raise UseInferenceDefault + + raise UseInferenceDefault + + +def infer_hasattr(node, context=None): + """Understand hasattr calls + + This always guarantees three possible outcomes for calling + hasattr: Const(False) when we are sure that the object + doesn't have the intended attribute, Const(True) when + we know that the object has the attribute and Uninferable + when we are unsure of the outcome of the function call. + """ + try: + obj, attr = _infer_getattr_args(node, context) + if ( + obj is util.Uninferable + or attr is util.Uninferable + or not hasattr(obj, "getattr") + ): + return util.Uninferable + obj.getattr(attr, context=context) + except UseInferenceDefault: + # Can't infer something from this function call. + return util.Uninferable + except AttributeInferenceError: + # Doesn't have it. + return nodes.Const(False) + return nodes.Const(True) + + +def infer_callable(node, context=None): + """Understand callable calls + + This follows Python's semantics, where an object + is callable if it provides an attribute __call__, + even though that attribute is something which can't be + called. + """ + if len(node.args) != 1: + # Invalid callable call. + raise UseInferenceDefault + + argument = node.args[0] + try: + inferred = next(argument.infer(context=context)) + except InferenceError: + return util.Uninferable + if inferred is util.Uninferable: + return util.Uninferable + return nodes.Const(inferred.callable()) + + +def infer_bool(node, context=None): + """Understand bool calls.""" + if len(node.args) > 1: + # Invalid bool call. + raise UseInferenceDefault + + if not node.args: + return nodes.Const(False) + + argument = node.args[0] + try: + inferred = next(argument.infer(context=context)) + except InferenceError: + return util.Uninferable + if inferred is util.Uninferable: + return util.Uninferable + + bool_value = inferred.bool_value() + if bool_value is util.Uninferable: + return util.Uninferable + return nodes.Const(bool_value) + + +def infer_type(node, context=None): + """Understand the one-argument form of *type*.""" + if len(node.args) != 1: + raise UseInferenceDefault + + return helpers.object_type(node.args[0], context) + + +def infer_slice(node, context=None): + """Understand `slice` calls.""" + args = node.args + if not 0 < len(args) <= 3: + raise UseInferenceDefault + + infer_func = partial(helpers.safe_infer, context=context) + args = [infer_func(arg) for arg in args] + for arg in args: + if not arg or arg is util.Uninferable: + raise UseInferenceDefault + if not isinstance(arg, nodes.Const): + raise UseInferenceDefault + if not isinstance(arg.value, (type(None), int)): + raise UseInferenceDefault + + if len(args) < 3: + # Make sure we have 3 arguments. + args.extend([None] * (3 - len(args))) + + slice_node = nodes.Slice( + lineno=node.lineno, col_offset=node.col_offset, parent=node.parent + ) + slice_node.postinit(*args) + return slice_node + + +def _infer_object__new__decorator(node, context=None): + # Instantiate class immediately + # since that's what @object.__new__ does + return iter((node.instantiate_class(),)) + + +def _infer_object__new__decorator_check(node): + """Predicate before inference_tip + + Check if the given ClassDef has an @object.__new__ decorator + """ + if not node.decorators: + return False + + for decorator in node.decorators.nodes: + if isinstance(decorator, nodes.Attribute): + if decorator.as_string() == OBJECT_DUNDER_NEW: + return True + return False + + +def infer_issubclass(callnode, context=None): + """Infer issubclass() calls + + :param nodes.Call callnode: an `issubclass` call + :param InferenceContext: the context for the inference + :rtype nodes.Const: Boolean Const value of the `issubclass` call + :raises UseInferenceDefault: If the node cannot be inferred + """ + call = arguments.CallSite.from_call(callnode) + if call.keyword_arguments: + # issubclass doesn't support keyword arguments + raise UseInferenceDefault("TypeError: issubclass() takes no keyword arguments") + if len(call.positional_arguments) != 2: + raise UseInferenceDefault( + "Expected two arguments, got {count}".format( + count=len(call.positional_arguments) + ) + ) + # The left hand argument is the obj to be checked + obj_node, class_or_tuple_node = call.positional_arguments + + try: + obj_type = next(obj_node.infer(context=context)) + except InferenceError as exc: + raise UseInferenceDefault from exc + if not isinstance(obj_type, nodes.ClassDef): + raise UseInferenceDefault("TypeError: arg 1 must be class") + + # The right hand argument is the class(es) that the given + # object is to be checked against. + try: + class_container = _class_or_tuple_to_container( + class_or_tuple_node, context=context + ) + except InferenceError as exc: + raise UseInferenceDefault from exc + try: + issubclass_bool = helpers.object_issubclass(obj_type, class_container, context) + except AstroidTypeError as exc: + raise UseInferenceDefault("TypeError: " + str(exc)) from exc + except MroError as exc: + raise UseInferenceDefault from exc + return nodes.Const(issubclass_bool) + + +def infer_isinstance(callnode, context=None): + """Infer isinstance calls + + :param nodes.Call callnode: an isinstance call + :param InferenceContext: context for call + (currently unused but is a common interface for inference) + :rtype nodes.Const: Boolean Const value of isinstance call + + :raises UseInferenceDefault: If the node cannot be inferred + """ + call = arguments.CallSite.from_call(callnode) + if call.keyword_arguments: + # isinstance doesn't support keyword arguments + raise UseInferenceDefault("TypeError: isinstance() takes no keyword arguments") + if len(call.positional_arguments) != 2: + raise UseInferenceDefault( + "Expected two arguments, got {count}".format( + count=len(call.positional_arguments) + ) + ) + # The left hand argument is the obj to be checked + obj_node, class_or_tuple_node = call.positional_arguments + # The right hand argument is the class(es) that the given + # obj is to be check is an instance of + try: + class_container = _class_or_tuple_to_container( + class_or_tuple_node, context=context + ) + except InferenceError: + raise UseInferenceDefault + try: + isinstance_bool = helpers.object_isinstance(obj_node, class_container, context) + except AstroidTypeError as exc: + raise UseInferenceDefault("TypeError: " + str(exc)) + except MroError as exc: + raise UseInferenceDefault from exc + if isinstance_bool is util.Uninferable: + raise UseInferenceDefault + return nodes.Const(isinstance_bool) + + +def _class_or_tuple_to_container(node, context=None): + # Move inferences results into container + # to simplify later logic + # raises InferenceError if any of the inferences fall through + node_infer = next(node.infer(context=context)) + # arg2 MUST be a type or a TUPLE of types + # for isinstance + if isinstance(node_infer, nodes.Tuple): + class_container = [ + next(node.infer(context=context)) for node in node_infer.elts + ] + class_container = [ + klass_node for klass_node in class_container if klass_node is not None + ] + else: + class_container = [node_infer] + return class_container + + +def infer_len(node, context=None): + """Infer length calls + + :param nodes.Call node: len call to infer + :param context.InferenceContext: node context + :rtype nodes.Const: a Const node with the inferred length, if possible + """ + call = arguments.CallSite.from_call(node) + if call.keyword_arguments: + raise UseInferenceDefault("TypeError: len() must take no keyword arguments") + if len(call.positional_arguments) != 1: + raise UseInferenceDefault( + "TypeError: len() must take exactly one argument " + "({len}) given".format(len=len(call.positional_arguments)) + ) + [argument_node] = call.positional_arguments + try: + return nodes.Const(helpers.object_len(argument_node, context=context)) + except (AstroidTypeError, InferenceError) as exc: + raise UseInferenceDefault(str(exc)) from exc + + +def infer_str(node, context=None): + """Infer str() calls + + :param nodes.Call node: str() call to infer + :param context.InferenceContext: node context + :rtype nodes.Const: a Const containing an empty string + """ + call = arguments.CallSite.from_call(node) + if call.keyword_arguments: + raise UseInferenceDefault("TypeError: str() must take no keyword arguments") + try: + return nodes.Const("") + except (AstroidTypeError, InferenceError) as exc: + raise UseInferenceDefault(str(exc)) from exc + + +def infer_int(node, context=None): + """Infer int() calls + + :param nodes.Call node: int() call to infer + :param context.InferenceContext: node context + :rtype nodes.Const: a Const containing the integer value of the int() call + """ + call = arguments.CallSite.from_call(node) + if call.keyword_arguments: + raise UseInferenceDefault("TypeError: int() must take no keyword arguments") + + if call.positional_arguments: + try: + first_value = next(call.positional_arguments[0].infer(context=context)) + except InferenceError as exc: + raise UseInferenceDefault(str(exc)) from exc + + if first_value is util.Uninferable: + raise UseInferenceDefault + + if isinstance(first_value, nodes.Const) and isinstance( + first_value.value, (int, str) + ): + try: + actual_value = int(first_value.value) + except ValueError: + return nodes.Const(0) + return nodes.Const(actual_value) + + return nodes.Const(0) + + +def infer_dict_fromkeys(node, context=None): + """Infer dict.fromkeys + + :param nodes.Call node: dict.fromkeys() call to infer + :param context.InferenceContext: node context + :rtype nodes.Dict: + a Dictionary containing the values that astroid was able to infer. + In case the inference failed for any reason, an empty dictionary + will be inferred instead. + """ + + def _build_dict_with_elements(elements): + new_node = nodes.Dict( + col_offset=node.col_offset, lineno=node.lineno, parent=node.parent + ) + new_node.postinit(elements) + return new_node + + call = arguments.CallSite.from_call(node) + if call.keyword_arguments: + raise UseInferenceDefault("TypeError: int() must take no keyword arguments") + if len(call.positional_arguments) not in {1, 2}: + raise UseInferenceDefault( + "TypeError: Needs between 1 and 2 positional arguments" + ) + + default = nodes.Const(None) + values = call.positional_arguments[0] + try: + inferred_values = next(values.infer(context=context)) + except InferenceError: + return _build_dict_with_elements([]) + if inferred_values is util.Uninferable: + return _build_dict_with_elements([]) + + # Limit to a couple of potential values, as this can become pretty complicated + accepted_iterable_elements = (nodes.Const,) + if isinstance(inferred_values, (nodes.List, nodes.Set, nodes.Tuple)): + elements = inferred_values.elts + for element in elements: + if not isinstance(element, accepted_iterable_elements): + # Fallback to an empty dict + return _build_dict_with_elements([]) + + elements_with_value = [(element, default) for element in elements] + return _build_dict_with_elements(elements_with_value) + + elif isinstance(inferred_values, nodes.Const) and isinstance( + inferred_values.value, (str, bytes) + ): + elements = [ + (nodes.Const(element), default) for element in inferred_values.value + ] + return _build_dict_with_elements(elements) + elif isinstance(inferred_values, nodes.Dict): + keys = inferred_values.itered() + for key in keys: + if not isinstance(key, accepted_iterable_elements): + # Fallback to an empty dict + return _build_dict_with_elements([]) + + elements_with_value = [(element, default) for element in keys] + return _build_dict_with_elements(elements_with_value) + + # Fallback to an empty dictionary + return _build_dict_with_elements([]) + + +# Builtins inference +register_builtin_transform(infer_bool, "bool") +register_builtin_transform(infer_super, "super") +register_builtin_transform(infer_callable, "callable") +register_builtin_transform(infer_getattr, "getattr") +register_builtin_transform(infer_hasattr, "hasattr") +register_builtin_transform(infer_tuple, "tuple") +register_builtin_transform(infer_set, "set") +register_builtin_transform(infer_list, "list") +register_builtin_transform(infer_dict, "dict") +register_builtin_transform(infer_frozenset, "frozenset") +register_builtin_transform(infer_type, "type") +register_builtin_transform(infer_slice, "slice") +register_builtin_transform(infer_isinstance, "isinstance") +register_builtin_transform(infer_issubclass, "issubclass") +register_builtin_transform(infer_len, "len") +register_builtin_transform(infer_str, "str") +register_builtin_transform(infer_int, "int") +register_builtin_transform(infer_dict_fromkeys, "dict.fromkeys") + + +# Infer object.__new__ calls +MANAGER.register_transform( + nodes.ClassDef, + inference_tip(_infer_object__new__decorator), + _infer_object__new__decorator_check, +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_collections.py b/venv/Lib/site-packages/astroid/brain/brain_collections.py new file mode 100644 index 0000000..e5b09ec --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_collections.py @@ -0,0 +1,74 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2016, 2018 Claudiu Popa +# Copyright (c) 2016-2017 Łukasz Rogalski +# Copyright (c) 2017 Derek Gustafson +# Copyright (c) 2018 Ioana Tagirta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +import sys + +import astroid + + +def _collections_transform(): + return astroid.parse( + """ + class defaultdict(dict): + default_factory = None + def __missing__(self, key): pass + def __getitem__(self, key): return default_factory + + """ + + _deque_mock() + + _ordered_dict_mock() + ) + + +def _deque_mock(): + base_deque_class = """ + class deque(object): + maxlen = 0 + def __init__(self, iterable=None, maxlen=None): + self.iterable = iterable or [] + def append(self, x): pass + def appendleft(self, x): pass + def clear(self): pass + def count(self, x): return 0 + def extend(self, iterable): pass + def extendleft(self, iterable): pass + def pop(self): return self.iterable[0] + def popleft(self): return self.iterable[0] + def remove(self, value): pass + def reverse(self): return reversed(self.iterable) + def rotate(self, n=1): return self + def __iter__(self): return self + def __reversed__(self): return self.iterable[::-1] + def __getitem__(self, index): return self.iterable[index] + def __setitem__(self, index, value): pass + def __delitem__(self, index): pass + def __bool__(self): return bool(self.iterable) + def __nonzero__(self): return bool(self.iterable) + def __contains__(self, o): return o in self.iterable + def __len__(self): return len(self.iterable) + def __copy__(self): return deque(self.iterable) + def copy(self): return deque(self.iterable) + def index(self, x, start=0, end=0): return 0 + def insert(self, x, i): pass + def __add__(self, other): pass + def __iadd__(self, other): pass + def __mul__(self, other): pass + def __imul__(self, other): pass + def __rmul__(self, other): pass""" + return base_deque_class + + +def _ordered_dict_mock(): + base_ordered_dict_class = """ + class OrderedDict(dict): + def __reversed__(self): return self[::-1] + def move_to_end(self, key, last=False): pass""" + return base_ordered_dict_class + + +astroid.register_module_extender(astroid.MANAGER, "collections", _collections_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_crypt.py b/venv/Lib/site-packages/astroid/brain/brain_crypt.py new file mode 100644 index 0000000..491ee23 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_crypt.py @@ -0,0 +1,26 @@ +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +import sys +import astroid + +PY37 = sys.version_info >= (3, 7) + +if PY37: + # Since Python 3.7 Hashing Methods are added + # dynamically to globals() + + def _re_transform(): + return astroid.parse( + """ + from collections import namedtuple + _Method = namedtuple('_Method', 'name ident salt_chars total_size') + + METHOD_SHA512 = _Method('SHA512', '6', 16, 106) + METHOD_SHA256 = _Method('SHA256', '5', 16, 63) + METHOD_BLOWFISH = _Method('BLOWFISH', 2, 'b', 22) + METHOD_MD5 = _Method('MD5', '1', 8, 34) + METHOD_CRYPT = _Method('CRYPT', None, 2, 13) + """ + ) + + astroid.register_module_extender(astroid.MANAGER, "crypt", _re_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_curses.py b/venv/Lib/site-packages/astroid/brain/brain_curses.py new file mode 100644 index 0000000..68e88b9 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_curses.py @@ -0,0 +1,179 @@ +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +import astroid + + +def _curses_transform(): + return astroid.parse( + """ + A_ALTCHARSET = 1 + A_BLINK = 1 + A_BOLD = 1 + A_DIM = 1 + A_INVIS = 1 + A_ITALIC = 1 + A_NORMAL = 1 + A_PROTECT = 1 + A_REVERSE = 1 + A_STANDOUT = 1 + A_UNDERLINE = 1 + A_HORIZONTAL = 1 + A_LEFT = 1 + A_LOW = 1 + A_RIGHT = 1 + A_TOP = 1 + A_VERTICAL = 1 + A_CHARTEXT = 1 + A_ATTRIBUTES = 1 + A_CHARTEXT = 1 + A_COLOR = 1 + KEY_MIN = 1 + KEY_BREAK = 1 + KEY_DOWN = 1 + KEY_UP = 1 + KEY_LEFT = 1 + KEY_RIGHT = 1 + KEY_HOME = 1 + KEY_BACKSPACE = 1 + KEY_F0 = 1 + KEY_Fn = 1 + KEY_DL = 1 + KEY_IL = 1 + KEY_DC = 1 + KEY_IC = 1 + KEY_EIC = 1 + KEY_CLEAR = 1 + KEY_EOS = 1 + KEY_EOL = 1 + KEY_SF = 1 + KEY_SR = 1 + KEY_NPAGE = 1 + KEY_PPAGE = 1 + KEY_STAB = 1 + KEY_CTAB = 1 + KEY_CATAB = 1 + KEY_ENTER = 1 + KEY_SRESET = 1 + KEY_RESET = 1 + KEY_PRINT = 1 + KEY_LL = 1 + KEY_A1 = 1 + KEY_A3 = 1 + KEY_B2 = 1 + KEY_C1 = 1 + KEY_C3 = 1 + KEY_BTAB = 1 + KEY_BEG = 1 + KEY_CANCEL = 1 + KEY_CLOSE = 1 + KEY_COMMAND = 1 + KEY_COPY = 1 + KEY_CREATE = 1 + KEY_END = 1 + KEY_EXIT = 1 + KEY_FIND = 1 + KEY_HELP = 1 + KEY_MARK = 1 + KEY_MESSAGE = 1 + KEY_MOVE = 1 + KEY_NEXT = 1 + KEY_OPEN = 1 + KEY_OPTIONS = 1 + KEY_PREVIOUS = 1 + KEY_REDO = 1 + KEY_REFERENCE = 1 + KEY_REFRESH = 1 + KEY_REPLACE = 1 + KEY_RESTART = 1 + KEY_RESUME = 1 + KEY_SAVE = 1 + KEY_SBEG = 1 + KEY_SCANCEL = 1 + KEY_SCOMMAND = 1 + KEY_SCOPY = 1 + KEY_SCREATE = 1 + KEY_SDC = 1 + KEY_SDL = 1 + KEY_SELECT = 1 + KEY_SEND = 1 + KEY_SEOL = 1 + KEY_SEXIT = 1 + KEY_SFIND = 1 + KEY_SHELP = 1 + KEY_SHOME = 1 + KEY_SIC = 1 + KEY_SLEFT = 1 + KEY_SMESSAGE = 1 + KEY_SMOVE = 1 + KEY_SNEXT = 1 + KEY_SOPTIONS = 1 + KEY_SPREVIOUS = 1 + KEY_SPRINT = 1 + KEY_SREDO = 1 + KEY_SREPLACE = 1 + KEY_SRIGHT = 1 + KEY_SRSUME = 1 + KEY_SSAVE = 1 + KEY_SSUSPEND = 1 + KEY_SUNDO = 1 + KEY_SUSPEND = 1 + KEY_UNDO = 1 + KEY_MOUSE = 1 + KEY_RESIZE = 1 + KEY_MAX = 1 + ACS_BBSS = 1 + ACS_BLOCK = 1 + ACS_BOARD = 1 + ACS_BSBS = 1 + ACS_BSSB = 1 + ACS_BSSS = 1 + ACS_BTEE = 1 + ACS_BULLET = 1 + ACS_CKBOARD = 1 + ACS_DARROW = 1 + ACS_DEGREE = 1 + ACS_DIAMOND = 1 + ACS_GEQUAL = 1 + ACS_HLINE = 1 + ACS_LANTERN = 1 + ACS_LARROW = 1 + ACS_LEQUAL = 1 + ACS_LLCORNER = 1 + ACS_LRCORNER = 1 + ACS_LTEE = 1 + ACS_NEQUAL = 1 + ACS_PI = 1 + ACS_PLMINUS = 1 + ACS_PLUS = 1 + ACS_RARROW = 1 + ACS_RTEE = 1 + ACS_S1 = 1 + ACS_S3 = 1 + ACS_S7 = 1 + ACS_S9 = 1 + ACS_SBBS = 1 + ACS_SBSB = 1 + ACS_SBSS = 1 + ACS_SSBB = 1 + ACS_SSBS = 1 + ACS_SSSB = 1 + ACS_SSSS = 1 + ACS_STERLING = 1 + ACS_TTEE = 1 + ACS_UARROW = 1 + ACS_ULCORNER = 1 + ACS_URCORNER = 1 + ACS_VLINE = 1 + COLOR_BLACK = 1 + COLOR_BLUE = 1 + COLOR_CYAN = 1 + COLOR_GREEN = 1 + COLOR_MAGENTA = 1 + COLOR_RED = 1 + COLOR_WHITE = 1 + COLOR_YELLOW = 1 + """ + ) + + +astroid.register_module_extender(astroid.MANAGER, "curses", _curses_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_dataclasses.py b/venv/Lib/site-packages/astroid/brain/brain_dataclasses.py new file mode 100644 index 0000000..7a25e0c --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_dataclasses.py @@ -0,0 +1,50 @@ +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +""" +Astroid hook for the dataclasses library +""" + +import astroid +from astroid import MANAGER + + +DATACLASSES_DECORATORS = frozenset(("dataclasses.dataclass", "dataclass")) + + +def is_decorated_with_dataclass(node, decorator_names=DATACLASSES_DECORATORS): + """Return True if a decorated node has a `dataclass` decorator applied.""" + if not node.decorators: + return False + for decorator_attribute in node.decorators.nodes: + if isinstance(decorator_attribute, astroid.Call): # decorator with arguments + decorator_attribute = decorator_attribute.func + if decorator_attribute.as_string() in decorator_names: + return True + return False + + +def dataclass_transform(node): + """Rewrite a dataclass to be easily understood by pylint""" + + for assign_node in node.body: + if not isinstance(assign_node, (astroid.AnnAssign, astroid.Assign)): + continue + + targets = ( + assign_node.targets + if hasattr(assign_node, "targets") + else [assign_node.target] + ) + for target in targets: + rhs_node = astroid.Unknown( + lineno=assign_node.lineno, + col_offset=assign_node.col_offset, + parent=assign_node, + ) + node.instance_attrs[target.name] = [rhs_node] + node.locals[target.name] = [rhs_node] + + +MANAGER.register_transform( + astroid.ClassDef, dataclass_transform, is_decorated_with_dataclass +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_dateutil.py b/venv/Lib/site-packages/astroid/brain/brain_dateutil.py new file mode 100644 index 0000000..a1c270f --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_dateutil.py @@ -0,0 +1,28 @@ +# Copyright (c) 2015-2016 Claudiu Popa +# Copyright (c) 2015 raylu +# Copyright (c) 2016 Ceridwen + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid hooks for dateutil""" + +import textwrap + +from astroid import MANAGER, register_module_extender +from astroid.builder import AstroidBuilder + + +def dateutil_transform(): + return AstroidBuilder(MANAGER).string_build( + textwrap.dedent( + """ + import datetime + def parse(timestr, parserinfo=None, **kwargs): + return datetime.datetime() + """ + ) + ) + + +register_module_extender(MANAGER, "dateutil.parser", dateutil_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_fstrings.py b/venv/Lib/site-packages/astroid/brain/brain_fstrings.py new file mode 100644 index 0000000..7d8c7b6 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_fstrings.py @@ -0,0 +1,51 @@ +# Copyright (c) 2017 Claudiu Popa + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +import collections +import sys + +import astroid + + +def _clone_node_with_lineno(node, parent, lineno): + cls = node.__class__ + other_fields = node._other_fields + _astroid_fields = node._astroid_fields + init_params = {"lineno": lineno, "col_offset": node.col_offset, "parent": parent} + postinit_params = {param: getattr(node, param) for param in _astroid_fields} + if other_fields: + init_params.update({param: getattr(node, param) for param in other_fields}) + new_node = cls(**init_params) + if hasattr(node, "postinit") and _astroid_fields: + for param, child in postinit_params.items(): + if child and not isinstance(child, collections.Sequence): + cloned_child = _clone_node_with_lineno( + node=child, lineno=new_node.lineno, parent=new_node + ) + postinit_params[param] = cloned_child + new_node.postinit(**postinit_params) + return new_node + + +def _transform_formatted_value(node): + if node.value and node.value.lineno == 1: + if node.lineno != node.value.lineno: + new_node = astroid.FormattedValue( + lineno=node.lineno, col_offset=node.col_offset, parent=node.parent + ) + new_value = _clone_node_with_lineno( + node=node.value, lineno=node.lineno, parent=new_node + ) + new_node.postinit(value=new_value, format_spec=node.format_spec) + return new_node + + +if sys.version_info[:2] >= (3, 6): + # TODO: this fix tries to *patch* http://bugs.python.org/issue29051 + # The problem is that FormattedValue.value, which is a Name node, + # has wrong line numbers, usually 1. This creates problems for pylint, + # which expects correct line numbers for things such as message control. + astroid.MANAGER.register_transform( + astroid.FormattedValue, _transform_formatted_value + ) diff --git a/venv/Lib/site-packages/astroid/brain/brain_functools.py b/venv/Lib/site-packages/astroid/brain/brain_functools.py new file mode 100644 index 0000000..8b594ef --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_functools.py @@ -0,0 +1,158 @@ +# Copyright (c) 2016, 2018 Claudiu Popa +# Copyright (c) 2018 Bryce Guinta + +"""Astroid hooks for understanding functools library module.""" +from functools import partial +from itertools import chain + +import astroid +from astroid import arguments +from astroid import BoundMethod +from astroid import extract_node +from astroid import helpers +from astroid.interpreter import objectmodel +from astroid import MANAGER +from astroid import objects + + +LRU_CACHE = "functools.lru_cache" + + +class LruWrappedModel(objectmodel.FunctionModel): + """Special attribute model for functions decorated with functools.lru_cache. + + The said decorators patches at decoration time some functions onto + the decorated function. + """ + + @property + def attr___wrapped__(self): + return self._instance + + @property + def attr_cache_info(self): + cache_info = extract_node( + """ + from functools import _CacheInfo + _CacheInfo(0, 0, 0, 0) + """ + ) + + class CacheInfoBoundMethod(BoundMethod): + def infer_call_result(self, caller, context=None): + yield helpers.safe_infer(cache_info) + + return CacheInfoBoundMethod(proxy=self._instance, bound=self._instance) + + @property + def attr_cache_clear(self): + node = extract_node("""def cache_clear(self): pass""") + return BoundMethod(proxy=node, bound=self._instance.parent.scope()) + + +def _transform_lru_cache(node, context=None): + # TODO: this is not ideal, since the node should be immutable, + # but due to https://github.com/PyCQA/astroid/issues/354, + # there's not much we can do now. + # Replacing the node would work partially, because, + # in pylint, the old node would still be available, leading + # to spurious false positives. + node.special_attributes = LruWrappedModel()(node) + return + + +def _functools_partial_inference(node, context=None): + call = arguments.CallSite.from_call(node) + number_of_positional = len(call.positional_arguments) + if number_of_positional < 1: + raise astroid.UseInferenceDefault( + "functools.partial takes at least one argument" + ) + if number_of_positional == 1 and not call.keyword_arguments: + raise astroid.UseInferenceDefault( + "functools.partial needs at least to have some filled arguments" + ) + + partial_function = call.positional_arguments[0] + try: + inferred_wrapped_function = next(partial_function.infer(context=context)) + except astroid.InferenceError as exc: + raise astroid.UseInferenceDefault from exc + if inferred_wrapped_function is astroid.Uninferable: + raise astroid.UseInferenceDefault("Cannot infer the wrapped function") + if not isinstance(inferred_wrapped_function, astroid.FunctionDef): + raise astroid.UseInferenceDefault("The wrapped function is not a function") + + # Determine if the passed keywords into the callsite are supported + # by the wrapped function. + function_parameters = chain( + inferred_wrapped_function.args.args or (), + inferred_wrapped_function.args.posonlyargs or (), + inferred_wrapped_function.args.kwonlyargs or (), + ) + parameter_names = set( + param.name + for param in function_parameters + if isinstance(param, astroid.AssignName) + ) + if set(call.keyword_arguments) - parameter_names: + raise astroid.UseInferenceDefault( + "wrapped function received unknown parameters" + ) + + partial_function = objects.PartialFunction( + call, + name=inferred_wrapped_function.name, + doc=inferred_wrapped_function.doc, + lineno=inferred_wrapped_function.lineno, + col_offset=inferred_wrapped_function.col_offset, + parent=inferred_wrapped_function.parent, + ) + partial_function.postinit( + args=inferred_wrapped_function.args, + body=inferred_wrapped_function.body, + decorators=inferred_wrapped_function.decorators, + returns=inferred_wrapped_function.returns, + type_comment_returns=inferred_wrapped_function.type_comment_returns, + type_comment_args=inferred_wrapped_function.type_comment_args, + ) + return iter((partial_function,)) + + +def _looks_like_lru_cache(node): + """Check if the given function node is decorated with lru_cache.""" + if not node.decorators: + return False + for decorator in node.decorators.nodes: + if not isinstance(decorator, astroid.Call): + continue + if _looks_like_functools_member(decorator, "lru_cache"): + return True + return False + + +def _looks_like_functools_member(node, member): + """Check if the given Call node is a functools.partial call""" + if isinstance(node.func, astroid.Name): + return node.func.name == member + elif isinstance(node.func, astroid.Attribute): + return ( + node.func.attrname == member + and isinstance(node.func.expr, astroid.Name) + and node.func.expr.name == "functools" + ) + + +_looks_like_partial = partial(_looks_like_functools_member, member="partial") + + +MANAGER.register_transform( + astroid.FunctionDef, _transform_lru_cache, _looks_like_lru_cache +) + + +MANAGER.register_transform( + astroid.Call, + astroid.inference_tip(_functools_partial_inference), + _looks_like_partial, +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_gi.py b/venv/Lib/site-packages/astroid/brain/brain_gi.py new file mode 100644 index 0000000..0970610 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_gi.py @@ -0,0 +1,220 @@ +# Copyright (c) 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2014 Cole Robinson +# Copyright (c) 2015-2016 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 David Shea +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2016 Giuseppe Scrivano + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid hooks for the Python 2 GObject introspection bindings. + +Helps with understanding everything imported from 'gi.repository' +""" + +import inspect +import itertools +import sys +import re +import warnings + +from astroid import MANAGER, AstroidBuildingError, nodes +from astroid.builder import AstroidBuilder + + +_inspected_modules = {} + +_identifier_re = r"^[A-Za-z_]\w*$" + + +def _gi_build_stub(parent): + """ + Inspect the passed module recursively and build stubs for functions, + classes, etc. + """ + classes = {} + functions = {} + constants = {} + methods = {} + for name in dir(parent): + if name.startswith("__"): + continue + + # Check if this is a valid name in python + if not re.match(_identifier_re, name): + continue + + try: + obj = getattr(parent, name) + except: + continue + + if inspect.isclass(obj): + classes[name] = obj + elif inspect.isfunction(obj) or inspect.isbuiltin(obj): + functions[name] = obj + elif inspect.ismethod(obj) or inspect.ismethoddescriptor(obj): + methods[name] = obj + elif ( + str(obj).startswith(", ) + # Only accept function calls with two constant arguments + if len(node.args) != 2: + return False + + if not all(isinstance(arg, nodes.Const) for arg in node.args): + return False + + func = node.func + if isinstance(func, nodes.Attribute): + if func.attrname != "require_version": + return False + if isinstance(func.expr, nodes.Name) and func.expr.name == "gi": + return True + + return False + + if isinstance(func, nodes.Name): + return func.name == "require_version" + + return False + + +def _register_require_version(node): + # Load the gi.require_version locally + try: + import gi + + gi.require_version(node.args[0].value, node.args[1].value) + except Exception: + pass + + return node + + +MANAGER.register_failed_import_hook(_import_gi_module) +MANAGER.register_transform( + nodes.Call, _register_require_version, _looks_like_require_version +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_hashlib.py b/venv/Lib/site-packages/astroid/brain/brain_hashlib.py new file mode 100644 index 0000000..98ae774 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_hashlib.py @@ -0,0 +1,67 @@ +# Copyright (c) 2016, 2018 Claudiu Popa +# Copyright (c) 2018 Ioana Tagirta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +import sys + +import six + +import astroid + +PY36 = sys.version_info >= (3, 6) + + +def _hashlib_transform(): + signature = "value=''" + template = """ + class %(name)s(object): + def __init__(self, %(signature)s): pass + def digest(self): + return %(digest)s + def copy(self): + return self + def update(self, value): pass + def hexdigest(self): + return '' + @property + def name(self): + return %(name)r + @property + def block_size(self): + return 1 + @property + def digest_size(self): + return 1 + """ + algorithms_with_signature = dict.fromkeys( + ["md5", "sha1", "sha224", "sha256", "sha384", "sha512"], signature + ) + if PY36: + blake2b_signature = "data=b'', *, digest_size=64, key=b'', salt=b'', \ + person=b'', fanout=1, depth=1, leaf_size=0, node_offset=0, \ + node_depth=0, inner_size=0, last_node=False" + blake2s_signature = "data=b'', *, digest_size=32, key=b'', salt=b'', \ + person=b'', fanout=1, depth=1, leaf_size=0, node_offset=0, \ + node_depth=0, inner_size=0, last_node=False" + new_algorithms = dict.fromkeys( + ["sha3_224", "sha3_256", "sha3_384", "sha3_512", "shake_128", "shake_256"], + signature, + ) + algorithms_with_signature.update(new_algorithms) + algorithms_with_signature.update( + {"blake2b": blake2b_signature, "blake2s": blake2s_signature} + ) + classes = "".join( + template + % { + "name": hashfunc, + "digest": 'b""' if six.PY3 else '""', + "signature": signature, + } + for hashfunc, signature in algorithms_with_signature.items() + ) + return astroid.parse(classes) + + +astroid.register_module_extender(astroid.MANAGER, "hashlib", _hashlib_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_http.py b/venv/Lib/site-packages/astroid/brain/brain_http.py new file mode 100644 index 0000000..a3aa814 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_http.py @@ -0,0 +1,201 @@ +# Copyright (c) 2018 Claudiu Popa + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid brain hints for some of the `http` module.""" +import textwrap + +import astroid +from astroid.builder import AstroidBuilder + + +def _http_transform(): + code = textwrap.dedent( + """ + from collections import namedtuple + _HTTPStatus = namedtuple('_HTTPStatus', 'value phrase description') + + class HTTPStatus: + + # informational + CONTINUE = _HTTPStatus(100, 'Continue', 'Request received, please continue') + SWITCHING_PROTOCOLS = _HTTPStatus(101, 'Switching Protocols', + 'Switching to new protocol; obey Upgrade header') + PROCESSING = _HTTPStatus(102, 'Processing', '') + OK = _HTTPStatus(200, 'OK', 'Request fulfilled, document follows') + CREATED = _HTTPStatus(201, 'Created', 'Document created, URL follows') + ACCEPTED = _HTTPStatus(202, 'Accepted', + 'Request accepted, processing continues off-line') + NON_AUTHORITATIVE_INFORMATION = _HTTPStatus(203, + 'Non-Authoritative Information', 'Request fulfilled from cache') + NO_CONTENT = _HTTPStatus(204, 'No Content', 'Request fulfilled, nothing follows') + RESET_CONTENT =_HTTPStatus(205, 'Reset Content', 'Clear input form for further input') + PARTIAL_CONTENT = _HTTPStatus(206, 'Partial Content', 'Partial content follows') + MULTI_STATUS = _HTTPStatus(207, 'Multi-Status', '') + ALREADY_REPORTED = _HTTPStatus(208, 'Already Reported', '') + IM_USED = _HTTPStatus(226, 'IM Used', '') + MULTIPLE_CHOICES = _HTTPStatus(300, 'Multiple Choices', + 'Object has several resources -- see URI list') + MOVED_PERMANENTLY = _HTTPStatus(301, 'Moved Permanently', + 'Object moved permanently -- see URI list') + FOUND = _HTTPStatus(302, 'Found', 'Object moved temporarily -- see URI list') + SEE_OTHER = _HTTPStatus(303, 'See Other', 'Object moved -- see Method and URL list') + NOT_MODIFIED = _HTTPStatus(304, 'Not Modified', + 'Document has not changed since given time') + USE_PROXY = _HTTPStatus(305, 'Use Proxy', + 'You must use proxy specified in Location to access this resource') + TEMPORARY_REDIRECT = _HTTPStatus(307, 'Temporary Redirect', + 'Object moved temporarily -- see URI list') + PERMANENT_REDIRECT = _HTTPStatus(308, 'Permanent Redirect', + 'Object moved permanently -- see URI list') + BAD_REQUEST = _HTTPStatus(400, 'Bad Request', + 'Bad request syntax or unsupported method') + UNAUTHORIZED = _HTTPStatus(401, 'Unauthorized', + 'No permission -- see authorization schemes') + PAYMENT_REQUIRED = _HTTPStatus(402, 'Payment Required', + 'No payment -- see charging schemes') + FORBIDDEN = _HTTPStatus(403, 'Forbidden', + 'Request forbidden -- authorization will not help') + NOT_FOUND = _HTTPStatus(404, 'Not Found', + 'Nothing matches the given URI') + METHOD_NOT_ALLOWED = _HTTPStatus(405, 'Method Not Allowed', + 'Specified method is invalid for this resource') + NOT_ACCEPTABLE = _HTTPStatus(406, 'Not Acceptable', + 'URI not available in preferred format') + PROXY_AUTHENTICATION_REQUIRED = _HTTPStatus(407, + 'Proxy Authentication Required', + 'You must authenticate with this proxy before proceeding') + REQUEST_TIMEOUT = _HTTPStatus(408, 'Request Timeout', + 'Request timed out; try again later') + CONFLICT = _HTTPStatus(409, 'Conflict', 'Request conflict') + GONE = _HTTPStatus(410, 'Gone', + 'URI no longer exists and has been permanently removed') + LENGTH_REQUIRED = _HTTPStatus(411, 'Length Required', + 'Client must specify Content-Length') + PRECONDITION_FAILED = _HTTPStatus(412, 'Precondition Failed', + 'Precondition in headers is false') + REQUEST_ENTITY_TOO_LARGE = _HTTPStatus(413, 'Request Entity Too Large', + 'Entity is too large') + REQUEST_URI_TOO_LONG = _HTTPStatus(414, 'Request-URI Too Long', + 'URI is too long') + UNSUPPORTED_MEDIA_TYPE = _HTTPStatus(415, 'Unsupported Media Type', + 'Entity body in unsupported format') + REQUESTED_RANGE_NOT_SATISFIABLE = _HTTPStatus(416, + 'Requested Range Not Satisfiable', + 'Cannot satisfy request range') + EXPECTATION_FAILED = _HTTPStatus(417, 'Expectation Failed', + 'Expect condition could not be satisfied') + MISDIRECTED_REQUEST = _HTTPStatus(421, 'Misdirected Request', + 'Server is not able to produce a response') + UNPROCESSABLE_ENTITY = _HTTPStatus(422, 'Unprocessable Entity') + LOCKED = _HTTPStatus(423, 'Locked') + FAILED_DEPENDENCY = _HTTPStatus(424, 'Failed Dependency') + UPGRADE_REQUIRED = _HTTPStatus(426, 'Upgrade Required') + PRECONDITION_REQUIRED = _HTTPStatus(428, 'Precondition Required', + 'The origin server requires the request to be conditional') + TOO_MANY_REQUESTS = _HTTPStatus(429, 'Too Many Requests', + 'The user has sent too many requests in ' + 'a given amount of time ("rate limiting")') + REQUEST_HEADER_FIELDS_TOO_LARGE = _HTTPStatus(431, + 'Request Header Fields Too Large', + 'The server is unwilling to process the request because its header ' + 'fields are too large') + UNAVAILABLE_FOR_LEGAL_REASONS = _HTTPStatus(451, + 'Unavailable For Legal Reasons', + 'The server is denying access to the ' + 'resource as a consequence of a legal demand') + INTERNAL_SERVER_ERROR = _HTTPStatus(500, 'Internal Server Error', + 'Server got itself in trouble') + NOT_IMPLEMENTED = _HTTPStatus(501, 'Not Implemented', + 'Server does not support this operation') + BAD_GATEWAY = _HTTPStatus(502, 'Bad Gateway', + 'Invalid responses from another server/proxy') + SERVICE_UNAVAILABLE = _HTTPStatus(503, 'Service Unavailable', + 'The server cannot process the request due to a high load') + GATEWAY_TIMEOUT = _HTTPStatus(504, 'Gateway Timeout', + 'The gateway server did not receive a timely response') + HTTP_VERSION_NOT_SUPPORTED = _HTTPStatus(505, 'HTTP Version Not Supported', + 'Cannot fulfill request') + VARIANT_ALSO_NEGOTIATES = _HTTPStatus(506, 'Variant Also Negotiates') + INSUFFICIENT_STORAGE = _HTTPStatus(507, 'Insufficient Storage') + LOOP_DETECTED = _HTTPStatus(508, 'Loop Detected') + NOT_EXTENDED = _HTTPStatus(510, 'Not Extended') + NETWORK_AUTHENTICATION_REQUIRED = _HTTPStatus(511, + 'Network Authentication Required', + 'The client needs to authenticate to gain network access') + """ + ) + return AstroidBuilder(astroid.MANAGER).string_build(code) + + +def _http_client_transform(): + return AstroidBuilder(astroid.MANAGER).string_build( + textwrap.dedent( + """ + from http import HTTPStatus + + CONTINUE = HTTPStatus.CONTINUE + SWITCHING_PROTOCOLS = HTTPStatus.SWITCHING_PROTOCOLS + PROCESSING = HTTPStatus.PROCESSING + OK = HTTPStatus.OK + CREATED = HTTPStatus.CREATED + ACCEPTED = HTTPStatus.ACCEPTED + NON_AUTHORITATIVE_INFORMATION = HTTPStatus.NON_AUTHORITATIVE_INFORMATION + NO_CONTENT = HTTPStatus.NO_CONTENT + RESET_CONTENT = HTTPStatus.RESET_CONTENT + PARTIAL_CONTENT = HTTPStatus.PARTIAL_CONTENT + MULTI_STATUS = HTTPStatus.MULTI_STATUS + ALREADY_REPORTED = HTTPStatus.ALREADY_REPORTED + IM_USED = HTTPStatus.IM_USED + MULTIPLE_CHOICES = HTTPStatus.MULTIPLE_CHOICES + MOVED_PERMANENTLY = HTTPStatus.MOVED_PERMANENTLY + FOUND = HTTPStatus.FOUND + SEE_OTHER = HTTPStatus.SEE_OTHER + NOT_MODIFIED = HTTPStatus.NOT_MODIFIED + USE_PROXY = HTTPStatus.USE_PROXY + TEMPORARY_REDIRECT = HTTPStatus.TEMPORARY_REDIRECT + PERMANENT_REDIRECT = HTTPStatus.PERMANENT_REDIRECT + BAD_REQUEST = HTTPStatus.BAD_REQUEST + UNAUTHORIZED = HTTPStatus.UNAUTHORIZED + PAYMENT_REQUIRED = HTTPStatus.PAYMENT_REQUIRED + FORBIDDEN = HTTPStatus.FORBIDDEN + NOT_FOUND = HTTPStatus.NOT_FOUND + METHOD_NOT_ALLOWED = HTTPStatus.METHOD_NOT_ALLOWED + NOT_ACCEPTABLE = HTTPStatus.NOT_ACCEPTABLE + PROXY_AUTHENTICATION_REQUIRED = HTTPStatus.PROXY_AUTHENTICATION_REQUIRED + REQUEST_TIMEOUT = HTTPStatus.REQUEST_TIMEOUT + CONFLICT = HTTPStatus.CONFLICT + GONE = HTTPStatus.GONE + LENGTH_REQUIRED = HTTPStatus.LENGTH_REQUIRED + PRECONDITION_FAILED = HTTPStatus.PRECONDITION_FAILED + REQUEST_ENTITY_TOO_LARGE = HTTPStatus.REQUEST_ENTITY_TOO_LARGE + REQUEST_URI_TOO_LONG = HTTPStatus.REQUEST_URI_TOO_LONG + UNSUPPORTED_MEDIA_TYPE = HTTPStatus.UNSUPPORTED_MEDIA_TYPE + REQUESTED_RANGE_NOT_SATISFIABLE = HTTPStatus.REQUESTED_RANGE_NOT_SATISFIABLE + EXPECTATION_FAILED = HTTPStatus.EXPECTATION_FAILED + UNPROCESSABLE_ENTITY = HTTPStatus.UNPROCESSABLE_ENTITY + LOCKED = HTTPStatus.LOCKED + FAILED_DEPENDENCY = HTTPStatus.FAILED_DEPENDENCY + UPGRADE_REQUIRED = HTTPStatus.UPGRADE_REQUIRED + PRECONDITION_REQUIRED = HTTPStatus.PRECONDITION_REQUIRED + TOO_MANY_REQUESTS = HTTPStatus.TOO_MANY_REQUESTS + REQUEST_HEADER_FIELDS_TOO_LARGE = HTTPStatus.REQUEST_HEADER_FIELDS_TOO_LARGE + INTERNAL_SERVER_ERROR = HTTPStatus.INTERNAL_SERVER_ERROR + NOT_IMPLEMENTED = HTTPStatus.NOT_IMPLEMENTED + BAD_GATEWAY = HTTPStatus.BAD_GATEWAY + SERVICE_UNAVAILABLE = HTTPStatus.SERVICE_UNAVAILABLE + GATEWAY_TIMEOUT = HTTPStatus.GATEWAY_TIMEOUT + HTTP_VERSION_NOT_SUPPORTED = HTTPStatus.HTTP_VERSION_NOT_SUPPORTED + VARIANT_ALSO_NEGOTIATES = HTTPStatus.VARIANT_ALSO_NEGOTIATES + INSUFFICIENT_STORAGE = HTTPStatus.INSUFFICIENT_STORAGE + LOOP_DETECTED = HTTPStatus.LOOP_DETECTED + NOT_EXTENDED = HTTPStatus.NOT_EXTENDED + NETWORK_AUTHENTICATION_REQUIRED = HTTPStatus.NETWORK_AUTHENTICATION_REQUIRED + """ + ) + ) + + +astroid.register_module_extender(astroid.MANAGER, "http", _http_transform) +astroid.register_module_extender(astroid.MANAGER, "http.client", _http_client_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_io.py b/venv/Lib/site-packages/astroid/brain/brain_io.py new file mode 100644 index 0000000..4c68922 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_io.py @@ -0,0 +1,45 @@ +# Copyright (c) 2016 Claudiu Popa + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid brain hints for some of the _io C objects.""" + +import astroid + + +BUFFERED = {"BufferedWriter", "BufferedReader"} +TextIOWrapper = "TextIOWrapper" +FileIO = "FileIO" +BufferedWriter = "BufferedWriter" + + +def _generic_io_transform(node, name, cls): + """Transform the given name, by adding the given *class* as a member of the node.""" + + io_module = astroid.MANAGER.ast_from_module_name("_io") + attribute_object = io_module[cls] + instance = attribute_object.instantiate_class() + node.locals[name] = [instance] + + +def _transform_text_io_wrapper(node): + # This is not always correct, since it can vary with the type of the descriptor, + # being stdout, stderr or stdin. But we cannot get access to the name of the + # stream, which is why we are using the BufferedWriter class as a default + # value + return _generic_io_transform(node, name="buffer", cls=BufferedWriter) + + +def _transform_buffered(node): + return _generic_io_transform(node, name="raw", cls=FileIO) + + +astroid.MANAGER.register_transform( + astroid.ClassDef, _transform_buffered, lambda node: node.name in BUFFERED +) +astroid.MANAGER.register_transform( + astroid.ClassDef, + _transform_text_io_wrapper, + lambda node: node.name == TextIOWrapper, +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_mechanize.py b/venv/Lib/site-packages/astroid/brain/brain_mechanize.py new file mode 100644 index 0000000..93f282e --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_mechanize.py @@ -0,0 +1,29 @@ +# Copyright (c) 2012-2013 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2015-2016 Claudiu Popa +# Copyright (c) 2016 Ceridwen + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +from astroid import MANAGER, register_module_extender +from astroid.builder import AstroidBuilder + + +def mechanize_transform(): + return AstroidBuilder(MANAGER).string_build( + """ + +class Browser(object): + def open(self, url, data=None, timeout=None): + return None + def open_novisit(self, url, data=None, timeout=None): + return None + def open_local_file(self, filename): + return None + +""" + ) + + +register_module_extender(MANAGER, "mechanize", mechanize_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_multiprocessing.py b/venv/Lib/site-packages/astroid/brain/brain_multiprocessing.py new file mode 100644 index 0000000..71256ee --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_multiprocessing.py @@ -0,0 +1,106 @@ +# Copyright (c) 2016 Claudiu Popa + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +import sys + +import astroid +from astroid import exceptions + + +def _multiprocessing_transform(): + module = astroid.parse( + """ + from multiprocessing.managers import SyncManager + def Manager(): + return SyncManager() + """ + ) + # Multiprocessing uses a getattr lookup inside contexts, + # in order to get the attributes they need. Since it's extremely + # dynamic, we use this approach to fake it. + node = astroid.parse( + """ + from multiprocessing.context import DefaultContext, BaseContext + default = DefaultContext() + base = BaseContext() + """ + ) + try: + context = next(node["default"].infer()) + base = next(node["base"].infer()) + except exceptions.InferenceError: + return module + + for node in (context, base): + for key, value in node.locals.items(): + if key.startswith("_"): + continue + + value = value[0] + if isinstance(value, astroid.FunctionDef): + # We need to rebound this, since otherwise + # it will have an extra argument (self). + value = astroid.BoundMethod(value, node) + module[key] = value + return module + + +def _multiprocessing_managers_transform(): + return astroid.parse( + """ + import array + import threading + import multiprocessing.pool as pool + + import six + + class Namespace(object): + pass + + class Value(object): + def __init__(self, typecode, value, lock=True): + self._typecode = typecode + self._value = value + def get(self): + return self._value + def set(self, value): + self._value = value + def __repr__(self): + return '%s(%r, %r)'%(type(self).__name__, self._typecode, self._value) + value = property(get, set) + + def Array(typecode, sequence, lock=True): + return array.array(typecode, sequence) + + class SyncManager(object): + Queue = JoinableQueue = six.moves.queue.Queue + Event = threading.Event + RLock = threading.RLock + BoundedSemaphore = threading.BoundedSemaphore + Condition = threading.Condition + Barrier = threading.Barrier + Pool = pool.Pool + list = list + dict = dict + Value = Value + Array = Array + Namespace = Namespace + __enter__ = lambda self: self + __exit__ = lambda *args: args + + def start(self, initializer=None, initargs=None): + pass + def shutdown(self): + pass + """ + ) + + +astroid.register_module_extender( + astroid.MANAGER, "multiprocessing.managers", _multiprocessing_managers_transform +) +astroid.register_module_extender( + astroid.MANAGER, "multiprocessing", _multiprocessing_transform +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_namedtuple_enum.py b/venv/Lib/site-packages/astroid/brain/brain_namedtuple_enum.py new file mode 100644 index 0000000..de24067 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_namedtuple_enum.py @@ -0,0 +1,449 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2012-2015 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2013-2014 Google, Inc. +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Dmitry Pribysh +# Copyright (c) 2015 David Shea +# Copyright (c) 2015 Philip Lorenz +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2016 Mateusz Bysiek +# Copyright (c) 2017 Hugo +# Copyright (c) 2017 Łukasz Rogalski + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid hooks for the Python standard library.""" + +import functools +import keyword +from textwrap import dedent + +from astroid import MANAGER, UseInferenceDefault, inference_tip, InferenceError +from astroid import arguments +from astroid import exceptions +from astroid import nodes +from astroid.builder import AstroidBuilder, extract_node +from astroid import util + + +TYPING_NAMEDTUPLE_BASENAMES = {"NamedTuple", "typing.NamedTuple"} +ENUM_BASE_NAMES = { + "Enum", + "IntEnum", + "enum.Enum", + "enum.IntEnum", + "IntFlag", + "enum.IntFlag", +} + + +def _infer_first(node, context): + if node is util.Uninferable: + raise UseInferenceDefault + try: + value = next(node.infer(context=context)) + if value is util.Uninferable: + raise UseInferenceDefault() + else: + return value + except StopIteration: + raise InferenceError() + + +def _find_func_form_arguments(node, context): + def _extract_namedtuple_arg_or_keyword(position, key_name=None): + + if len(args) > position: + return _infer_first(args[position], context) + if key_name and key_name in found_keywords: + return _infer_first(found_keywords[key_name], context) + + args = node.args + keywords = node.keywords + found_keywords = ( + {keyword.arg: keyword.value for keyword in keywords} if keywords else {} + ) + + name = _extract_namedtuple_arg_or_keyword(position=0, key_name="typename") + names = _extract_namedtuple_arg_or_keyword(position=1, key_name="field_names") + if name and names: + return name.value, names + + raise UseInferenceDefault() + + +def infer_func_form(node, base_type, context=None, enum=False): + """Specific inference function for namedtuple or Python 3 enum. """ + # node is a Call node, class name as first argument and generated class + # attributes as second argument + + # namedtuple or enums list of attributes can be a list of strings or a + # whitespace-separate string + try: + name, names = _find_func_form_arguments(node, context) + try: + attributes = names.value.replace(",", " ").split() + except AttributeError: + if not enum: + attributes = [ + _infer_first(const, context).value for const in names.elts + ] + else: + # Enums supports either iterator of (name, value) pairs + # or mappings. + if hasattr(names, "items") and isinstance(names.items, list): + attributes = [ + _infer_first(const[0], context).value + for const in names.items + if isinstance(const[0], nodes.Const) + ] + elif hasattr(names, "elts"): + # Enums can support either ["a", "b", "c"] + # or [("a", 1), ("b", 2), ...], but they can't + # be mixed. + if all(isinstance(const, nodes.Tuple) for const in names.elts): + attributes = [ + _infer_first(const.elts[0], context).value + for const in names.elts + if isinstance(const, nodes.Tuple) + ] + else: + attributes = [ + _infer_first(const, context).value for const in names.elts + ] + else: + raise AttributeError + if not attributes: + raise AttributeError + except (AttributeError, exceptions.InferenceError): + raise UseInferenceDefault() + + # If we can't infer the name of the class, don't crash, up to this point + # we know it is a namedtuple anyway. + name = name or "Uninferable" + # we want to return a Class node instance with proper attributes set + class_node = nodes.ClassDef(name, "docstring") + class_node.parent = node.parent + # set base class=tuple + class_node.bases.append(base_type) + # XXX add __init__(*attributes) method + for attr in attributes: + fake_node = nodes.EmptyNode() + fake_node.parent = class_node + fake_node.attrname = attr + class_node.instance_attrs[attr] = [fake_node] + return class_node, name, attributes + + +def _has_namedtuple_base(node): + """Predicate for class inference tip + + :type node: ClassDef + :rtype: bool + """ + return set(node.basenames) & TYPING_NAMEDTUPLE_BASENAMES + + +def _looks_like(node, name): + func = node.func + if isinstance(func, nodes.Attribute): + return func.attrname == name + if isinstance(func, nodes.Name): + return func.name == name + return False + + +_looks_like_namedtuple = functools.partial(_looks_like, name="namedtuple") +_looks_like_enum = functools.partial(_looks_like, name="Enum") +_looks_like_typing_namedtuple = functools.partial(_looks_like, name="NamedTuple") + + +def infer_named_tuple(node, context=None): + """Specific inference function for namedtuple Call node""" + tuple_base_name = nodes.Name(name="tuple", parent=node.root()) + class_node, name, attributes = infer_func_form( + node, tuple_base_name, context=context + ) + call_site = arguments.CallSite.from_call(node) + func = next(extract_node("import collections; collections.namedtuple").infer()) + try: + rename = next(call_site.infer_argument(func, "rename", context)).bool_value() + except InferenceError: + rename = False + + if rename: + attributes = _get_renamed_namedtuple_attributes(attributes) + + replace_args = ", ".join("{arg}=None".format(arg=arg) for arg in attributes) + field_def = ( + " {name} = property(lambda self: self[{index:d}], " + "doc='Alias for field number {index:d}')" + ) + field_defs = "\n".join( + field_def.format(name=name, index=index) + for index, name in enumerate(attributes) + ) + fake = AstroidBuilder(MANAGER).string_build( + """ +class %(name)s(tuple): + __slots__ = () + _fields = %(fields)r + def _asdict(self): + return self.__dict__ + @classmethod + def _make(cls, iterable, new=tuple.__new__, len=len): + return new(cls, iterable) + def _replace(self, %(replace_args)s): + return self + def __getnewargs__(self): + return tuple(self) +%(field_defs)s + """ + % { + "name": name, + "fields": attributes, + "field_defs": field_defs, + "replace_args": replace_args, + } + ) + class_node.locals["_asdict"] = fake.body[0].locals["_asdict"] + class_node.locals["_make"] = fake.body[0].locals["_make"] + class_node.locals["_replace"] = fake.body[0].locals["_replace"] + class_node.locals["_fields"] = fake.body[0].locals["_fields"] + for attr in attributes: + class_node.locals[attr] = fake.body[0].locals[attr] + # we use UseInferenceDefault, we can't be a generator so return an iterator + return iter([class_node]) + + +def _get_renamed_namedtuple_attributes(field_names): + names = list(field_names) + seen = set() + for i, name in enumerate(field_names): + if ( + not all(c.isalnum() or c == "_" for c in name) + or keyword.iskeyword(name) + or not name + or name[0].isdigit() + or name.startswith("_") + or name in seen + ): + names[i] = "_%d" % i + seen.add(name) + return tuple(names) + + +def infer_enum(node, context=None): + """ Specific inference function for enum Call node. """ + enum_meta = extract_node( + """ + class EnumMeta(object): + 'docstring' + def __call__(self, node): + class EnumAttribute(object): + name = '' + value = 0 + return EnumAttribute() + def __iter__(self): + class EnumAttribute(object): + name = '' + value = 0 + return [EnumAttribute()] + def __reversed__(self): + class EnumAttribute(object): + name = '' + value = 0 + return (EnumAttribute, ) + def __next__(self): + return next(iter(self)) + def __getitem__(self, attr): + class Value(object): + @property + def name(self): + return '' + @property + def value(self): + return attr + + return Value() + __members__ = [''] + """ + ) + class_node = infer_func_form(node, enum_meta, context=context, enum=True)[0] + return iter([class_node.instantiate_class()]) + + +INT_FLAG_ADDITION_METHODS = """ + def __or__(self, other): + return {name}(self.value | other.value) + def __and__(self, other): + return {name}(self.value & other.value) + def __xor__(self, other): + return {name}(self.value ^ other.value) + def __add__(self, other): + return {name}(self.value + other.value) + def __div__(self, other): + return {name}(self.value / other.value) + def __invert__(self): + return {name}(~self.value) + def __mul__(self, other): + return {name}(self.value * other.value) +""" + + +def infer_enum_class(node): + """ Specific inference for enums. """ + for basename in node.basenames: + # TODO: doesn't handle subclasses yet. This implementation + # is a hack to support enums. + if basename not in ENUM_BASE_NAMES: + continue + if node.root().name == "enum": + # Skip if the class is directly from enum module. + break + for local, values in node.locals.items(): + if any(not isinstance(value, nodes.AssignName) for value in values): + continue + + targets = [] + stmt = values[0].statement() + if isinstance(stmt, nodes.Assign): + if isinstance(stmt.targets[0], nodes.Tuple): + targets = stmt.targets[0].itered() + else: + targets = stmt.targets + elif isinstance(stmt, nodes.AnnAssign): + targets = [stmt.target] + + inferred_return_value = None + if isinstance(stmt, nodes.Assign): + if isinstance(stmt.value, nodes.Const): + if isinstance(stmt.value.value, str): + inferred_return_value = repr(stmt.value.value) + else: + inferred_return_value = stmt.value.value + else: + inferred_return_value = stmt.value.as_string() + + new_targets = [] + for target in targets: + # Replace all the assignments with our mocked class. + classdef = dedent( + """ + class {name}({types}): + @property + def value(self): + return {return_value} + @property + def name(self): + return "{name}" + """.format( + name=target.name, + types=", ".join(node.basenames), + return_value=inferred_return_value, + ) + ) + if "IntFlag" in basename: + # Alright, we need to add some additional methods. + # Unfortunately we still can't infer the resulting objects as + # Enum members, but once we'll be able to do that, the following + # should result in some nice symbolic execution + classdef += INT_FLAG_ADDITION_METHODS.format(name=target.name) + + fake = AstroidBuilder(MANAGER).string_build(classdef)[target.name] + fake.parent = target.parent + for method in node.mymethods(): + fake.locals[method.name] = [method] + new_targets.append(fake.instantiate_class()) + node.locals[local] = new_targets + break + return node + + +def infer_typing_namedtuple_class(class_node, context=None): + """Infer a subclass of typing.NamedTuple""" + # Check if it has the corresponding bases + annassigns_fields = [ + annassign.target.name + for annassign in class_node.body + if isinstance(annassign, nodes.AnnAssign) + ] + code = dedent( + """ + from collections import namedtuple + namedtuple({typename!r}, {fields!r}) + """ + ).format(typename=class_node.name, fields=",".join(annassigns_fields)) + node = extract_node(code) + generated_class_node = next(infer_named_tuple(node, context)) + for method in class_node.mymethods(): + generated_class_node.locals[method.name] = [method] + + for assign in class_node.body: + if not isinstance(assign, nodes.Assign): + continue + + for target in assign.targets: + attr = target.name + generated_class_node.locals[attr] = class_node.locals[attr] + + return iter((generated_class_node,)) + + +def infer_typing_namedtuple(node, context=None): + """Infer a typing.NamedTuple(...) call.""" + # This is essentially a namedtuple with different arguments + # so we extract the args and infer a named tuple. + try: + func = next(node.func.infer()) + except InferenceError: + raise UseInferenceDefault + + if func.qname() != "typing.NamedTuple": + raise UseInferenceDefault + + if len(node.args) != 2: + raise UseInferenceDefault + + if not isinstance(node.args[1], (nodes.List, nodes.Tuple)): + raise UseInferenceDefault + + names = [] + for elt in node.args[1].elts: + if not isinstance(elt, (nodes.List, nodes.Tuple)): + raise UseInferenceDefault + if len(elt.elts) != 2: + raise UseInferenceDefault + names.append(elt.elts[0].as_string()) + + typename = node.args[0].as_string() + if names: + field_names = "({},)".format(",".join(names)) + else: + field_names = "''" + node = extract_node( + "namedtuple({typename}, {fields})".format(typename=typename, fields=field_names) + ) + return infer_named_tuple(node, context) + + +MANAGER.register_transform( + nodes.Call, inference_tip(infer_named_tuple), _looks_like_namedtuple +) +MANAGER.register_transform(nodes.Call, inference_tip(infer_enum), _looks_like_enum) +MANAGER.register_transform( + nodes.ClassDef, + infer_enum_class, + predicate=lambda cls: any( + basename for basename in cls.basenames if basename in ENUM_BASE_NAMES + ), +) +MANAGER.register_transform( + nodes.ClassDef, inference_tip(infer_typing_namedtuple_class), _has_namedtuple_base +) +MANAGER.register_transform( + nodes.Call, inference_tip(infer_typing_namedtuple), _looks_like_typing_namedtuple +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_nose.py b/venv/Lib/site-packages/astroid/brain/brain_nose.py new file mode 100644 index 0000000..7b12d76 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_nose.py @@ -0,0 +1,77 @@ +# Copyright (c) 2015-2016 Claudiu Popa +# Copyright (c) 2016 Ceridwen + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Hooks for nose library.""" + +import re +import textwrap + +import astroid +import astroid.builder + +_BUILDER = astroid.builder.AstroidBuilder(astroid.MANAGER) + + +def _pep8(name, caps=re.compile("([A-Z])")): + return caps.sub(lambda m: "_" + m.groups()[0].lower(), name) + + +def _nose_tools_functions(): + """Get an iterator of names and bound methods.""" + module = _BUILDER.string_build( + textwrap.dedent( + """ + import unittest + + class Test(unittest.TestCase): + pass + a = Test() + """ + ) + ) + try: + case = next(module["a"].infer()) + except astroid.InferenceError: + return + for method in case.methods(): + if method.name.startswith("assert") and "_" not in method.name: + pep8_name = _pep8(method.name) + yield pep8_name, astroid.BoundMethod(method, case) + if method.name == "assertEqual": + # nose also exports assert_equals. + yield "assert_equals", astroid.BoundMethod(method, case) + + +def _nose_tools_transform(node): + for method_name, method in _nose_tools_functions(): + node.locals[method_name] = [method] + + +def _nose_tools_trivial_transform(): + """Custom transform for the nose.tools module.""" + stub = _BUILDER.string_build("""__all__ = []""") + all_entries = ["ok_", "eq_"] + + for pep8_name, method in _nose_tools_functions(): + all_entries.append(pep8_name) + stub[pep8_name] = method + + # Update the __all__ variable, since nose.tools + # does this manually with .append. + all_assign = stub["__all__"].parent + all_object = astroid.List(all_entries) + all_object.parent = all_assign + all_assign.value = all_object + return stub + + +astroid.register_module_extender( + astroid.MANAGER, "nose.tools.trivial", _nose_tools_trivial_transform +) +astroid.MANAGER.register_transform( + astroid.Module, _nose_tools_transform, lambda n: n.name == "nose.tools" +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_core_fromnumeric.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_fromnumeric.py new file mode 100644 index 0000000..43b30e4 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_fromnumeric.py @@ -0,0 +1,23 @@ +# Copyright (c) 2018-2019 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Astroid hooks for numpy.core.fromnumeric module.""" + +import astroid + + +def numpy_core_fromnumeric_transform(): + return astroid.parse( + """ + def sum(a, axis=None, dtype=None, out=None, keepdims=None, initial=None): + return numpy.ndarray([0, 0]) + """ + ) + + +astroid.register_module_extender( + astroid.MANAGER, "numpy.core.fromnumeric", numpy_core_fromnumeric_transform +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_core_function_base.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_function_base.py new file mode 100644 index 0000000..05a73d9 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_function_base.py @@ -0,0 +1,29 @@ +# Copyright (c) 2018-2019 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Astroid hooks for numpy.core.function_base module.""" + +import functools +import astroid +from brain_numpy_utils import looks_like_numpy_member, infer_numpy_member + + +METHODS_TO_BE_INFERRED = { + "linspace": """def linspace(start, stop, num=50, endpoint=True, retstep=False, dtype=None, axis=0): + return numpy.ndarray([0, 0])""", + "logspace": """def logspace(start, stop, num=50, endpoint=True, base=10.0, dtype=None, axis=0): + return numpy.ndarray([0, 0])""", + "geomspace": """def geomspace(start, stop, num=50, endpoint=True, dtype=None, axis=0): + return numpy.ndarray([0, 0])""", +} + +for func_name, func_src in METHODS_TO_BE_INFERRED.items(): + inference_function = functools.partial(infer_numpy_member, func_src) + astroid.MANAGER.register_transform( + astroid.Attribute, + astroid.inference_tip(inference_function), + functools.partial(looks_like_numpy_member, func_name), + ) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_core_multiarray.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_multiarray.py new file mode 100644 index 0000000..3032acc --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_multiarray.py @@ -0,0 +1,55 @@ +# Copyright (c) 2018-2019 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Astroid hooks for numpy.core.multiarray module.""" + +import functools +import astroid +from brain_numpy_utils import looks_like_numpy_member, infer_numpy_member + + +def numpy_core_multiarray_transform(): + return astroid.parse( + """ + # different functions defined in multiarray.py + def inner(a, b): + return numpy.ndarray([0, 0]) + + def vdot(a, b): + return numpy.ndarray([0, 0]) + """ + ) + + +astroid.register_module_extender( + astroid.MANAGER, "numpy.core.multiarray", numpy_core_multiarray_transform +) + + +METHODS_TO_BE_INFERRED = { + "array": """def array(object, dtype=None, copy=True, order='K', subok=False, ndmin=0): + return numpy.ndarray([0, 0])""", + "dot": """def dot(a, b, out=None): + return numpy.ndarray([0, 0])""", + "empty_like": """def empty_like(a, dtype=None, order='K', subok=True): + return numpy.ndarray((0, 0))""", + "concatenate": """def concatenate(arrays, axis=None, out=None): + return numpy.ndarray((0, 0))""", + "where": """def where(condition, x=None, y=None): + return numpy.ndarray([0, 0])""", + "empty": """def empty(shape, dtype=float, order='C'): + return numpy.ndarray([0, 0])""", + "zeros": """def zeros(shape, dtype=float, order='C'): + return numpy.ndarray([0, 0])""", +} + +for method_name, function_src in METHODS_TO_BE_INFERRED.items(): + inference_function = functools.partial(infer_numpy_member, function_src) + astroid.MANAGER.register_transform( + astroid.Attribute, + astroid.inference_tip(inference_function), + functools.partial(looks_like_numpy_member, method_name), + ) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_core_numeric.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_numeric.py new file mode 100644 index 0000000..ba43c94 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_numeric.py @@ -0,0 +1,43 @@ +# Copyright (c) 2018-2019 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Astroid hooks for numpy.core.numeric module.""" + +import functools +import astroid +from brain_numpy_utils import looks_like_numpy_member, infer_numpy_member + + +def numpy_core_numeric_transform(): + return astroid.parse( + """ + # different functions defined in numeric.py + import numpy + def zeros_like(a, dtype=None, order='K', subok=True): return numpy.ndarray((0, 0)) + def ones_like(a, dtype=None, order='K', subok=True): return numpy.ndarray((0, 0)) + def full_like(a, fill_value, dtype=None, order='K', subok=True): return numpy.ndarray((0, 0)) + """ + ) + + +astroid.register_module_extender( + astroid.MANAGER, "numpy.core.numeric", numpy_core_numeric_transform +) + + +METHODS_TO_BE_INFERRED = { + "ones": """def ones(shape, dtype=None, order='C'): + return numpy.ndarray([0, 0])""" +} + + +for method_name, function_src in METHODS_TO_BE_INFERRED.items(): + inference_function = functools.partial(infer_numpy_member, function_src) + astroid.MANAGER.register_transform( + astroid.Attribute, + astroid.inference_tip(inference_function), + functools.partial(looks_like_numpy_member, method_name), + ) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_core_numerictypes.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_numerictypes.py new file mode 100644 index 0000000..42021fa --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_numerictypes.py @@ -0,0 +1,250 @@ +# Copyright (c) 2018-2019 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +# TODO(hippo91) : correct the methods signature. + +"""Astroid hooks for numpy.core.numerictypes module.""" + +import astroid + + +def numpy_core_numerictypes_transform(): + return astroid.parse( + """ + # different types defined in numerictypes.py + class generic(object): + def __init__(self, value): + self.T = None + self.base = None + self.data = None + self.dtype = None + self.flags = None + self.flat = None + self.imag = None + self.itemsize = None + self.nbytes = None + self.ndim = None + self.real = None + self.size = None + self.strides = None + + def all(self): return uninferable + def any(self): return uninferable + def argmax(self): return uninferable + def argmin(self): return uninferable + def argsort(self): return uninferable + def astype(self): return uninferable + def base(self): return uninferable + def byteswap(self): return uninferable + def choose(self): return uninferable + def clip(self): return uninferable + def compress(self): return uninferable + def conj(self): return uninferable + def conjugate(self): return uninferable + def copy(self): return uninferable + def cumprod(self): return uninferable + def cumsum(self): return uninferable + def data(self): return uninferable + def diagonal(self): return uninferable + def dtype(self): return uninferable + def dump(self): return uninferable + def dumps(self): return uninferable + def fill(self): return uninferable + def flags(self): return uninferable + def flat(self): return uninferable + def flatten(self): return uninferable + def getfield(self): return uninferable + def imag(self): return uninferable + def item(self): return uninferable + def itemset(self): return uninferable + def itemsize(self): return uninferable + def max(self): return uninferable + def mean(self): return uninferable + def min(self): return uninferable + def nbytes(self): return uninferable + def ndim(self): return uninferable + def newbyteorder(self): return uninferable + def nonzero(self): return uninferable + def prod(self): return uninferable + def ptp(self): return uninferable + def put(self): return uninferable + def ravel(self): return uninferable + def real(self): return uninferable + def repeat(self): return uninferable + def reshape(self): return uninferable + def resize(self): return uninferable + def round(self): return uninferable + def searchsorted(self): return uninferable + def setfield(self): return uninferable + def setflags(self): return uninferable + def shape(self): return uninferable + def size(self): return uninferable + def sort(self): return uninferable + def squeeze(self): return uninferable + def std(self): return uninferable + def strides(self): return uninferable + def sum(self): return uninferable + def swapaxes(self): return uninferable + def take(self): return uninferable + def tobytes(self): return uninferable + def tofile(self): return uninferable + def tolist(self): return uninferable + def tostring(self): return uninferable + def trace(self): return uninferable + def transpose(self): return uninferable + def var(self): return uninferable + def view(self): return uninferable + + + class dtype(object): + def __init__(self, obj, align=False, copy=False): + self.alignment = None + self.base = None + self.byteorder = None + self.char = None + self.descr = None + self.fields = None + self.flags = None + self.hasobject = None + self.isalignedstruct = None + self.isbuiltin = None + self.isnative = None + self.itemsize = None + self.kind = None + self.metadata = None + self.name = None + self.names = None + self.num = None + self.shape = None + self.str = None + self.subdtype = None + self.type = None + + def newbyteorder(self, new_order='S'): return uninferable + def __neg__(self): return uninferable + + class busdaycalendar(object): + def __init__(self, weekmask='1111100', holidays=None): + self.holidays = None + self.weekmask = None + + class flexible(generic): pass + class bool_(generic): pass + class number(generic): + def __neg__(self): return uninferable + class datetime64(generic): + def __init__(self, nb, unit=None): pass + + + class void(flexible): + def __init__(self, *args, **kwargs): + self.base = None + self.dtype = None + self.flags = None + def getfield(self): return uninferable + def setfield(self): return uninferable + + + class character(flexible): pass + + + class integer(number): + def __init__(self, value): + self.denominator = None + self.numerator = None + + + class inexact(number): pass + + + class str_(str, character): + def maketrans(self, x, y=None, z=None): return uninferable + + + class bytes_(bytes, character): + def fromhex(self, string): return uninferable + def maketrans(self, frm, to): return uninferable + + + class signedinteger(integer): pass + + + class unsignedinteger(integer): pass + + + class complexfloating(inexact): pass + + + class floating(inexact): pass + + + class float64(floating, float): + def fromhex(self, string): return uninferable + + + class uint64(unsignedinteger): pass + class complex64(complexfloating): pass + class int16(signedinteger): pass + class float96(floating): pass + class int8(signedinteger): pass + class uint32(unsignedinteger): pass + class uint8(unsignedinteger): pass + class _typedict(dict): pass + class complex192(complexfloating): pass + class timedelta64(signedinteger): + def __init__(self, nb, unit=None): pass + class int32(signedinteger): pass + class uint16(unsignedinteger): pass + class float32(floating): pass + class complex128(complexfloating, complex): pass + class float16(floating): pass + class int64(signedinteger): pass + + buffer_type = memoryview + bool8 = bool_ + byte = int8 + bytes0 = bytes_ + cdouble = complex128 + cfloat = complex128 + clongdouble = complex192 + clongfloat = complex192 + complex_ = complex128 + csingle = complex64 + double = float64 + float_ = float64 + half = float16 + int0 = int32 + int_ = int32 + intc = int32 + intp = int32 + long = int32 + longcomplex = complex192 + longdouble = float96 + longfloat = float96 + longlong = int64 + object0 = object_ + object_ = object_ + short = int16 + single = float32 + singlecomplex = complex64 + str0 = str_ + string_ = bytes_ + ubyte = uint8 + uint = uint32 + uint0 = uint32 + uintc = uint32 + uintp = uint32 + ulonglong = uint64 + unicode = str_ + unicode_ = str_ + ushort = uint16 + void0 = void + """ + ) + + +astroid.register_module_extender( + astroid.MANAGER, "numpy.core.numerictypes", numpy_core_numerictypes_transform +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_core_umath.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_umath.py new file mode 100644 index 0000000..459d38c --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_core_umath.py @@ -0,0 +1,105 @@ +# Copyright (c) 2018-2019 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Astroid hooks for numpy.core.umath module.""" + +import astroid + + +def numpy_core_umath_transform(): + ufunc_optional_keyword_arguments = ( + """out=None, where=True, casting='same_kind', order='K', """ + """dtype=None, subok=True""" + ) + return astroid.parse( + """ + # Constants + e = 2.718281828459045 + euler_gamma = 0.5772156649015329 + + # No arg functions + def geterrobj(): return [] + + # One arg functions + def seterrobj(errobj): return None + + # One arg functions with optional kwargs + def arccos(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def arccosh(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def arcsin(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def arcsinh(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def arctan(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def arctanh(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def cbrt(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def conj(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def conjugate(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def cosh(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def deg2rad(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def degrees(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def exp2(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def expm1(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def fabs(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def frexp(x, {opt_args:s}): return (numpy.ndarray((0, 0)), numpy.ndarray((0, 0))) + def isfinite(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def isinf(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def log(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def log1p(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def log2(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def logical_not(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def modf(x, {opt_args:s}): return (numpy.ndarray((0, 0)), numpy.ndarray((0, 0))) + def negative(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def rad2deg(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def radians(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def reciprocal(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def rint(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def sign(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def signbit(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def sinh(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def spacing(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def square(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def tan(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def tanh(x, {opt_args:s}): return numpy.ndarray((0, 0)) + def trunc(x, {opt_args:s}): return numpy.ndarray((0, 0)) + + # Two args functions with optional kwargs + def bitwise_and(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def bitwise_or(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def bitwise_xor(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def copysign(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def divide(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def equal(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def floor_divide(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def fmax(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def fmin(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def fmod(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def greater(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def hypot(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def ldexp(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def left_shift(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def less(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def logaddexp(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def logaddexp2(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def logical_and(x1, x2, {opt_args:s}): return numpy.ndarray([0, 0]) + def logical_or(x1, x2, {opt_args:s}): return numpy.ndarray([0, 0]) + def logical_xor(x1, x2, {opt_args:s}): return numpy.ndarray([0, 0]) + def maximum(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def minimum(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def nextafter(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def not_equal(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def power(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def remainder(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def right_shift(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def subtract(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + def true_divide(x1, x2, {opt_args:s}): return numpy.ndarray((0, 0)) + """.format( + opt_args=ufunc_optional_keyword_arguments + ) + ) + + +astroid.register_module_extender( + astroid.MANAGER, "numpy.core.umath", numpy_core_umath_transform +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_ndarray.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_ndarray.py new file mode 100644 index 0000000..8c231a3 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_ndarray.py @@ -0,0 +1,153 @@ +# Copyright (c) 2015-2016, 2018 Claudiu Popa +# Copyright (c) 2016 Ceridwen +# Copyright (c) 2017-2018 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Astroid hooks for numpy ndarray class.""" + +import functools +import astroid + + +def infer_numpy_ndarray(node, context=None): + ndarray = """ + class ndarray(object): + def __init__(self, shape, dtype=float, buffer=None, offset=0, + strides=None, order=None): + self.T = None + self.base = None + self.ctypes = None + self.data = None + self.dtype = None + self.flags = None + self.flat = None + self.imag = None + self.itemsize = None + self.nbytes = None + self.ndim = None + self.real = None + self.shape = None + self.size = None + self.strides = None + + def __abs__(self): return numpy.ndarray([0, 0]) + def __add__(self, value): return numpy.ndarray([0, 0]) + def __and__(self, value): return numpy.ndarray([0, 0]) + def __array__(self, dtype=None): return numpy.ndarray([0, 0]) + def __array_wrap__(self, obj): return numpy.ndarray([0, 0]) + def __contains__(self, key): return True + def __copy__(self): return numpy.ndarray([0, 0]) + def __deepcopy__(self, memo): return numpy.ndarray([0, 0]) + def __divmod__(self, value): return (numpy.ndarray([0, 0]), numpy.ndarray([0, 0])) + def __eq__(self, value): return numpy.ndarray([0, 0]) + def __float__(self): return 0. + def __floordiv__(self): return numpy.ndarray([0, 0]) + def __ge__(self, value): return numpy.ndarray([0, 0]) + def __getitem__(self, key): return uninferable + def __gt__(self, value): return numpy.ndarray([0, 0]) + def __iadd__(self, value): return numpy.ndarray([0, 0]) + def __iand__(self, value): return numpy.ndarray([0, 0]) + def __ifloordiv__(self, value): return numpy.ndarray([0, 0]) + def __ilshift__(self, value): return numpy.ndarray([0, 0]) + def __imod__(self, value): return numpy.ndarray([0, 0]) + def __imul__(self, value): return numpy.ndarray([0, 0]) + def __int__(self): return 0 + def __invert__(self): return numpy.ndarray([0, 0]) + def __ior__(self, value): return numpy.ndarray([0, 0]) + def __ipow__(self, value): return numpy.ndarray([0, 0]) + def __irshift__(self, value): return numpy.ndarray([0, 0]) + def __isub__(self, value): return numpy.ndarray([0, 0]) + def __itruediv__(self, value): return numpy.ndarray([0, 0]) + def __ixor__(self, value): return numpy.ndarray([0, 0]) + def __le__(self, value): return numpy.ndarray([0, 0]) + def __len__(self): return 1 + def __lshift__(self, value): return numpy.ndarray([0, 0]) + def __lt__(self, value): return numpy.ndarray([0, 0]) + def __matmul__(self, value): return numpy.ndarray([0, 0]) + def __mod__(self, value): return numpy.ndarray([0, 0]) + def __mul__(self, value): return numpy.ndarray([0, 0]) + def __ne__(self, value): return numpy.ndarray([0, 0]) + def __neg__(self): return numpy.ndarray([0, 0]) + def __or__(self): return numpy.ndarray([0, 0]) + def __pos__(self): return numpy.ndarray([0, 0]) + def __pow__(self): return numpy.ndarray([0, 0]) + def __repr__(self): return str() + def __rshift__(self): return numpy.ndarray([0, 0]) + def __setitem__(self, key, value): return uninferable + def __str__(self): return str() + def __sub__(self, value): return numpy.ndarray([0, 0]) + def __truediv__(self, value): return numpy.ndarray([0, 0]) + def __xor__(self, value): return numpy.ndarray([0, 0]) + def all(self, axis=None, out=None, keepdims=False): return np.ndarray([0, 0]) + def any(self, axis=None, out=None, keepdims=False): return np.ndarray([0, 0]) + def argmax(self, axis=None, out=None): return np.ndarray([0, 0]) + def argmin(self, axis=None, out=None): return np.ndarray([0, 0]) + def argpartition(self, kth, axis=-1, kind='introselect', order=None): return np.ndarray([0, 0]) + def argsort(self, axis=-1, kind='quicksort', order=None): return np.ndarray([0, 0]) + def astype(self, dtype, order='K', casting='unsafe', subok=True, copy=True): return np.ndarray([0, 0]) + def byteswap(self, inplace=False): return np.ndarray([0, 0]) + def choose(self, choices, out=None, mode='raise'): return np.ndarray([0, 0]) + def clip(self, min=None, max=None, out=None): return np.ndarray([0, 0]) + def compress(self, condition, axis=None, out=None): return np.ndarray([0, 0]) + def conj(self): return np.ndarray([0, 0]) + def conjugate(self): return np.ndarray([0, 0]) + def copy(self, order='C'): return np.ndarray([0, 0]) + def cumprod(self, axis=None, dtype=None, out=None): return np.ndarray([0, 0]) + def cumsum(self, axis=None, dtype=None, out=None): return np.ndarray([0, 0]) + def diagonal(self, offset=0, axis1=0, axis2=1): return np.ndarray([0, 0]) + def dot(self, b, out=None): return np.ndarray([0, 0]) + def dump(self, file): return None + def dumps(self): return str() + def fill(self, value): return None + def flatten(self, order='C'): return np.ndarray([0, 0]) + def getfield(self, dtype, offset=0): return np.ndarray([0, 0]) + def item(self, *args): return uninferable + def itemset(self, *args): return None + def max(self, axis=None, out=None): return np.ndarray([0, 0]) + def mean(self, axis=None, dtype=None, out=None, keepdims=False): return np.ndarray([0, 0]) + def min(self, axis=None, out=None, keepdims=False): return np.ndarray([0, 0]) + def newbyteorder(self, new_order='S'): return np.ndarray([0, 0]) + def nonzero(self): return (1,) + def partition(self, kth, axis=-1, kind='introselect', order=None): return None + def prod(self, axis=None, dtype=None, out=None, keepdims=False): return np.ndarray([0, 0]) + def ptp(self, axis=None, out=None): return np.ndarray([0, 0]) + def put(self, indices, values, mode='raise'): return None + def ravel(self, order='C'): return np.ndarray([0, 0]) + def repeat(self, repeats, axis=None): return np.ndarray([0, 0]) + def reshape(self, shape, order='C'): return np.ndarray([0, 0]) + def resize(self, new_shape, refcheck=True): return None + def round(self, decimals=0, out=None): return np.ndarray([0, 0]) + def searchsorted(self, v, side='left', sorter=None): return np.ndarray([0, 0]) + def setfield(self, val, dtype, offset=0): return None + def setflags(self, write=None, align=None, uic=None): return None + def sort(self, axis=-1, kind='quicksort', order=None): return None + def squeeze(self, axis=None): return np.ndarray([0, 0]) + def std(self, axis=None, dtype=None, out=None, ddof=0, keepdims=False): return np.ndarray([0, 0]) + def sum(self, axis=None, dtype=None, out=None, keepdims=False): return np.ndarray([0, 0]) + def swapaxes(self, axis1, axis2): return np.ndarray([0, 0]) + def take(self, indices, axis=None, out=None, mode='raise'): return np.ndarray([0, 0]) + def tobytes(self, order='C'): return b'' + def tofile(self, fid, sep="", format="%s"): return None + def tolist(self, ): return [] + def tostring(self, order='C'): return b'' + def trace(self, offset=0, axis1=0, axis2=1, dtype=None, out=None): return np.ndarray([0, 0]) + def transpose(self, *axes): return np.ndarray([0, 0]) + def var(self, axis=None, dtype=None, out=None, ddof=0, keepdims=False): return np.ndarray([0, 0]) + def view(self, dtype=None, type=None): return np.ndarray([0, 0]) + """ + node = astroid.extract_node(ndarray) + return node.infer(context=context) + + +def _looks_like_numpy_ndarray(node): + return isinstance(node, astroid.Attribute) and node.attrname == "ndarray" + + +astroid.MANAGER.register_transform( + astroid.Attribute, + astroid.inference_tip(infer_numpy_ndarray), + _looks_like_numpy_ndarray, +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_random_mtrand.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_random_mtrand.py new file mode 100644 index 0000000..772bfc4 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_random_mtrand.py @@ -0,0 +1,70 @@ +# Copyright (c) 2018-2019 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +# TODO(hippo91) : correct the functions return types +"""Astroid hooks for numpy.random.mtrand module.""" + +import astroid + + +def numpy_random_mtrand_transform(): + return astroid.parse( + """ + def beta(a, b, size=None): return uninferable + def binomial(n, p, size=None): return uninferable + def bytes(length): return uninferable + def chisquare(df, size=None): return uninferable + def choice(a, size=None, replace=True, p=None): return uninferable + def dirichlet(alpha, size=None): return uninferable + def exponential(scale=1.0, size=None): return uninferable + def f(dfnum, dfden, size=None): return uninferable + def gamma(shape, scale=1.0, size=None): return uninferable + def geometric(p, size=None): return uninferable + def get_state(): return uninferable + def gumbel(loc=0.0, scale=1.0, size=None): return uninferable + def hypergeometric(ngood, nbad, nsample, size=None): return uninferable + def laplace(loc=0.0, scale=1.0, size=None): return uninferable + def logistic(loc=0.0, scale=1.0, size=None): return uninferable + def lognormal(mean=0.0, sigma=1.0, size=None): return uninferable + def logseries(p, size=None): return uninferable + def multinomial(n, pvals, size=None): return uninferable + def multivariate_normal(mean, cov, size=None): return uninferable + def negative_binomial(n, p, size=None): return uninferable + def noncentral_chisquare(df, nonc, size=None): return uninferable + def noncentral_f(dfnum, dfden, nonc, size=None): return uninferable + def normal(loc=0.0, scale=1.0, size=None): return uninferable + def pareto(a, size=None): return uninferable + def permutation(x): return uninferable + def poisson(lam=1.0, size=None): return uninferable + def power(a, size=None): return uninferable + def rand(*args): return uninferable + def randint(low, high=None, size=None, dtype='l'): + import numpy + return numpy.ndarray((1,1)) + def randn(*args): return uninferable + def random_integers(low, high=None, size=None): return uninferable + def random_sample(size=None): return uninferable + def rayleigh(scale=1.0, size=None): return uninferable + def seed(seed=None): return uninferable + def set_state(state): return uninferable + def shuffle(x): return uninferable + def standard_cauchy(size=None): return uninferable + def standard_exponential(size=None): return uninferable + def standard_gamma(shape, size=None): return uninferable + def standard_normal(size=None): return uninferable + def standard_t(df, size=None): return uninferable + def triangular(left, mode, right, size=None): return uninferable + def uniform(low=0.0, high=1.0, size=None): return uninferable + def vonmises(mu, kappa, size=None): return uninferable + def wald(mean, scale, size=None): return uninferable + def weibull(a, size=None): return uninferable + def zipf(a, size=None): return uninferable + """ + ) + + +astroid.register_module_extender( + astroid.MANAGER, "numpy.random.mtrand", numpy_random_mtrand_transform +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_numpy_utils.py b/venv/Lib/site-packages/astroid/brain/brain_numpy_utils.py new file mode 100644 index 0000000..2bad01e --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_numpy_utils.py @@ -0,0 +1,56 @@ +# Copyright (c) 2018-2019 hippo91 + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Different utilities for the numpy brains""" + + +import astroid + + +def infer_numpy_member(src, node, context=None): + node = astroid.extract_node(src) + return node.infer(context=context) + + +def _is_a_numpy_module(node: astroid.node_classes.Name) -> bool: + """ + Returns True if the node is a representation of a numpy module. + + For example in : + import numpy as np + x = np.linspace(1, 2) + The node is a representation of the numpy module. + + :param node: node to test + :return: True if the node is a representation of the numpy module. + """ + module_nickname = node.name + potential_import_target = [ + x for x in node.lookup(module_nickname)[1] if isinstance(x, astroid.Import) + ] + for target in potential_import_target: + if ("numpy", module_nickname) in target.names: + return True + return False + + +def looks_like_numpy_member( + member_name: str, node: astroid.node_classes.NodeNG +) -> bool: + """ + Returns True if the node is a member of numpy whose + name is member_name. + + :param member_name: name of the member + :param node: node to test + :return: True if the node is a member of numpy + """ + return ( + isinstance(node, astroid.Attribute) + and node.attrname == member_name + and isinstance(node.expr, astroid.Name) + and _is_a_numpy_module(node.expr) + ) diff --git a/venv/Lib/site-packages/astroid/brain/brain_pkg_resources.py b/venv/Lib/site-packages/astroid/brain/brain_pkg_resources.py new file mode 100644 index 0000000..25e7649 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_pkg_resources.py @@ -0,0 +1,75 @@ +# Copyright (c) 2016, 2018 Claudiu Popa +# Copyright (c) 2016 Ceridwen + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +import astroid +from astroid import parse +from astroid import inference_tip +from astroid import register_module_extender +from astroid import MANAGER + + +def pkg_resources_transform(): + return parse( + """ +def require(*requirements): + return pkg_resources.working_set.require(*requirements) + +def run_script(requires, script_name): + return pkg_resources.working_set.run_script(requires, script_name) + +def iter_entry_points(group, name=None): + return pkg_resources.working_set.iter_entry_points(group, name) + +def resource_exists(package_or_requirement, resource_name): + return get_provider(package_or_requirement).has_resource(resource_name) + +def resource_isdir(package_or_requirement, resource_name): + return get_provider(package_or_requirement).resource_isdir( + resource_name) + +def resource_filename(package_or_requirement, resource_name): + return get_provider(package_or_requirement).get_resource_filename( + self, resource_name) + +def resource_stream(package_or_requirement, resource_name): + return get_provider(package_or_requirement).get_resource_stream( + self, resource_name) + +def resource_string(package_or_requirement, resource_name): + return get_provider(package_or_requirement).get_resource_string( + self, resource_name) + +def resource_listdir(package_or_requirement, resource_name): + return get_provider(package_or_requirement).resource_listdir( + resource_name) + +def extraction_error(): + pass + +def get_cache_path(archive_name, names=()): + extract_path = self.extraction_path or get_default_cache() + target_path = os.path.join(extract_path, archive_name+'-tmp', *names) + return target_path + +def postprocess(tempname, filename): + pass + +def set_extraction_path(path): + pass + +def cleanup_resources(force=False): + pass + +def get_distribution(dist): + return Distribution(dist) + +_namespace_packages = {} +""" + ) + + +register_module_extender(MANAGER, "pkg_resources", pkg_resources_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_pytest.py b/venv/Lib/site-packages/astroid/brain/brain_pytest.py new file mode 100644 index 0000000..d7e3ac8 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_pytest.py @@ -0,0 +1,88 @@ +# Copyright (c) 2014-2016 Claudiu Popa +# Copyright (c) 2014 Jeff Quast +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2016 Florian Bruhin +# Copyright (c) 2016 Ceridwen + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid hooks for pytest.""" +from __future__ import absolute_import +from astroid import MANAGER, register_module_extender +from astroid.builder import AstroidBuilder + + +def pytest_transform(): + return AstroidBuilder(MANAGER).string_build( + """ + +try: + import _pytest.mark + import _pytest.recwarn + import _pytest.runner + import _pytest.python + import _pytest.skipping + import _pytest.assertion +except ImportError: + pass +else: + deprecated_call = _pytest.recwarn.deprecated_call + warns = _pytest.recwarn.warns + + exit = _pytest.runner.exit + fail = _pytest.runner.fail + skip = _pytest.runner.skip + importorskip = _pytest.runner.importorskip + + xfail = _pytest.skipping.xfail + mark = _pytest.mark.MarkGenerator() + raises = _pytest.python.raises + + # New in pytest 3.0 + try: + approx = _pytest.python.approx + register_assert_rewrite = _pytest.assertion.register_assert_rewrite + except AttributeError: + pass + + +# Moved in pytest 3.0 + +try: + import _pytest.freeze_support + freeze_includes = _pytest.freeze_support.freeze_includes +except ImportError: + try: + import _pytest.genscript + freeze_includes = _pytest.genscript.freeze_includes + except ImportError: + pass + +try: + import _pytest.debugging + set_trace = _pytest.debugging.pytestPDB().set_trace +except ImportError: + try: + import _pytest.pdb + set_trace = _pytest.pdb.pytestPDB().set_trace + except ImportError: + pass + +try: + import _pytest.fixtures + fixture = _pytest.fixtures.fixture + yield_fixture = _pytest.fixtures.yield_fixture +except ImportError: + try: + import _pytest.python + fixture = _pytest.python.fixture + yield_fixture = _pytest.python.yield_fixture + except ImportError: + pass +""" + ) + + +register_module_extender(MANAGER, "pytest", pytest_transform) +register_module_extender(MANAGER, "py.test", pytest_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_qt.py b/venv/Lib/site-packages/astroid/brain/brain_qt.py new file mode 100644 index 0000000..8679d14 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_qt.py @@ -0,0 +1,82 @@ +# Copyright (c) 2015-2016 Claudiu Popa +# Copyright (c) 2016 Ceridwen +# Copyright (c) 2017 Roy Wright +# Copyright (c) 2018 Ashley Whetter + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid hooks for the PyQT library.""" + +from astroid import MANAGER, register_module_extender +from astroid.builder import AstroidBuilder +from astroid import nodes +from astroid import parse + + +def _looks_like_signal(node, signal_name="pyqtSignal"): + if "__class__" in node.instance_attrs: + try: + cls = node.instance_attrs["__class__"][0] + return cls.name == signal_name + except AttributeError: + # return False if the cls does not have a name attribute + pass + return False + + +def transform_pyqt_signal(node): + module = parse( + """ + class pyqtSignal(object): + def connect(self, slot, type=None, no_receiver_check=False): + pass + def disconnect(self, slot): + pass + def emit(self, *args): + pass + """ + ) + signal_cls = module["pyqtSignal"] + node.instance_attrs["emit"] = signal_cls["emit"] + node.instance_attrs["disconnect"] = signal_cls["disconnect"] + node.instance_attrs["connect"] = signal_cls["connect"] + + +def transform_pyside_signal(node): + module = parse( + """ + class NotPySideSignal(object): + def connect(self, receiver, type=None): + pass + def disconnect(self, receiver): + pass + def emit(self, *args): + pass + """ + ) + signal_cls = module["NotPySideSignal"] + node.instance_attrs["connect"] = signal_cls["connect"] + node.instance_attrs["disconnect"] = signal_cls["disconnect"] + node.instance_attrs["emit"] = signal_cls["emit"] + + +def pyqt4_qtcore_transform(): + return AstroidBuilder(MANAGER).string_build( + """ + +def SIGNAL(signal_name): pass + +class QObject(object): + def emit(self, signal): pass +""" + ) + + +register_module_extender(MANAGER, "PyQt4.QtCore", pyqt4_qtcore_transform) +MANAGER.register_transform(nodes.FunctionDef, transform_pyqt_signal, _looks_like_signal) +MANAGER.register_transform( + nodes.ClassDef, + transform_pyside_signal, + lambda node: node.qname() in ("PySide.QtCore.Signal", "PySide2.QtCore.Signal"), +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_random.py b/venv/Lib/site-packages/astroid/brain/brain_random.py new file mode 100644 index 0000000..5ec858a --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_random.py @@ -0,0 +1,75 @@ +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +import random + +import astroid +from astroid import helpers +from astroid import MANAGER + + +ACCEPTED_ITERABLES_FOR_SAMPLE = (astroid.List, astroid.Set, astroid.Tuple) + + +def _clone_node_with_lineno(node, parent, lineno): + cls = node.__class__ + other_fields = node._other_fields + _astroid_fields = node._astroid_fields + init_params = {"lineno": lineno, "col_offset": node.col_offset, "parent": parent} + postinit_params = {param: getattr(node, param) for param in _astroid_fields} + if other_fields: + init_params.update({param: getattr(node, param) for param in other_fields}) + new_node = cls(**init_params) + if hasattr(node, "postinit") and _astroid_fields: + new_node.postinit(**postinit_params) + return new_node + + +def infer_random_sample(node, context=None): + if len(node.args) != 2: + raise astroid.UseInferenceDefault + + length = node.args[1] + if not isinstance(length, astroid.Const): + raise astroid.UseInferenceDefault + if not isinstance(length.value, int): + raise astroid.UseInferenceDefault + + inferred_sequence = helpers.safe_infer(node.args[0], context=context) + if not inferred_sequence: + raise astroid.UseInferenceDefault + + if not isinstance(inferred_sequence, ACCEPTED_ITERABLES_FOR_SAMPLE): + raise astroid.UseInferenceDefault + + if length.value > len(inferred_sequence.elts): + # In this case, this will raise a ValueError + raise astroid.UseInferenceDefault + + try: + elts = random.sample(inferred_sequence.elts, length.value) + except ValueError: + raise astroid.UseInferenceDefault + + new_node = astroid.List( + lineno=node.lineno, col_offset=node.col_offset, parent=node.scope() + ) + new_elts = [ + _clone_node_with_lineno(elt, parent=new_node, lineno=new_node.lineno) + for elt in elts + ] + new_node.postinit(new_elts) + return iter((new_node,)) + + +def _looks_like_random_sample(node): + func = node.func + if isinstance(func, astroid.Attribute): + return func.attrname == "sample" + if isinstance(func, astroid.Name): + return func.name == "sample" + return False + + +MANAGER.register_transform( + astroid.Call, astroid.inference_tip(infer_random_sample), _looks_like_random_sample +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_re.py b/venv/Lib/site-packages/astroid/brain/brain_re.py new file mode 100644 index 0000000..c7ee51a --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_re.py @@ -0,0 +1,36 @@ +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +import sys +import astroid + +PY36 = sys.version_info >= (3, 6) + +if PY36: + # Since Python 3.6 there is the RegexFlag enum + # where every entry will be exposed via updating globals() + + def _re_transform(): + return astroid.parse( + """ + import sre_compile + ASCII = sre_compile.SRE_FLAG_ASCII + IGNORECASE = sre_compile.SRE_FLAG_IGNORECASE + LOCALE = sre_compile.SRE_FLAG_LOCALE + UNICODE = sre_compile.SRE_FLAG_UNICODE + MULTILINE = sre_compile.SRE_FLAG_MULTILINE + DOTALL = sre_compile.SRE_FLAG_DOTALL + VERBOSE = sre_compile.SRE_FLAG_VERBOSE + A = ASCII + I = IGNORECASE + L = LOCALE + U = UNICODE + M = MULTILINE + S = DOTALL + X = VERBOSE + TEMPLATE = sre_compile.SRE_FLAG_TEMPLATE + T = TEMPLATE + DEBUG = sre_compile.SRE_FLAG_DEBUG + """ + ) + + astroid.register_module_extender(astroid.MANAGER, "re", _re_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_six.py b/venv/Lib/site-packages/astroid/brain/brain_six.py new file mode 100644 index 0000000..b342fbf --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_six.py @@ -0,0 +1,200 @@ +# Copyright (c) 2014-2016, 2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +"""Astroid hooks for six module.""" + +from textwrap import dedent + +from astroid import MANAGER, register_module_extender +from astroid.builder import AstroidBuilder +from astroid.exceptions import ( + AstroidBuildingError, + InferenceError, + AttributeInferenceError, +) +from astroid import nodes + + +SIX_ADD_METACLASS = "six.add_metaclass" + + +def _indent(text, prefix, predicate=None): + """Adds 'prefix' to the beginning of selected lines in 'text'. + + If 'predicate' is provided, 'prefix' will only be added to the lines + where 'predicate(line)' is True. If 'predicate' is not provided, + it will default to adding 'prefix' to all non-empty lines that do not + consist solely of whitespace characters. + """ + if predicate is None: + predicate = lambda line: line.strip() + + def prefixed_lines(): + for line in text.splitlines(True): + yield prefix + line if predicate(line) else line + + return "".join(prefixed_lines()) + + +_IMPORTS = """ +import _io +cStringIO = _io.StringIO +filter = filter +from itertools import filterfalse +input = input +from sys import intern +map = map +range = range +from imp import reload as reload_module +from functools import reduce +from shlex import quote as shlex_quote +from io import StringIO +from collections import UserDict, UserList, UserString +xrange = range +zip = zip +from itertools import zip_longest +import builtins +import configparser +import copyreg +import _dummy_thread +import http.cookiejar as http_cookiejar +import http.cookies as http_cookies +import html.entities as html_entities +import html.parser as html_parser +import http.client as http_client +import http.server as http_server +BaseHTTPServer = CGIHTTPServer = SimpleHTTPServer = http.server +import pickle as cPickle +import queue +import reprlib +import socketserver +import _thread +import winreg +import xmlrpc.server as xmlrpc_server +import xmlrpc.client as xmlrpc_client +import urllib.robotparser as urllib_robotparser +import email.mime.multipart as email_mime_multipart +import email.mime.nonmultipart as email_mime_nonmultipart +import email.mime.text as email_mime_text +import email.mime.base as email_mime_base +import urllib.parse as urllib_parse +import urllib.error as urllib_error +import tkinter +import tkinter.dialog as tkinter_dialog +import tkinter.filedialog as tkinter_filedialog +import tkinter.scrolledtext as tkinter_scrolledtext +import tkinter.simpledialog as tkinder_simpledialog +import tkinter.tix as tkinter_tix +import tkinter.ttk as tkinter_ttk +import tkinter.constants as tkinter_constants +import tkinter.dnd as tkinter_dnd +import tkinter.colorchooser as tkinter_colorchooser +import tkinter.commondialog as tkinter_commondialog +import tkinter.filedialog as tkinter_tkfiledialog +import tkinter.font as tkinter_font +import tkinter.messagebox as tkinter_messagebox +import urllib +import urllib.request as urllib_request +import urllib.robotparser as urllib_robotparser +import urllib.parse as urllib_parse +import urllib.error as urllib_error +""" + + +def six_moves_transform(): + code = dedent( + """ + class Moves(object): + {} + moves = Moves() + """ + ).format(_indent(_IMPORTS, " ")) + module = AstroidBuilder(MANAGER).string_build(code) + module.name = "six.moves" + return module + + +def _six_fail_hook(modname): + """Fix six.moves imports due to the dynamic nature of this + class. + + Construct a pseudo-module which contains all the necessary imports + for six + + :param modname: Name of failed module + :type modname: str + + :return: An astroid module + :rtype: nodes.Module + """ + + attribute_of = modname != "six.moves" and modname.startswith("six.moves") + if modname != "six.moves" and not attribute_of: + raise AstroidBuildingError(modname=modname) + module = AstroidBuilder(MANAGER).string_build(_IMPORTS) + module.name = "six.moves" + if attribute_of: + # Facilitate import of submodules in Moves + start_index = len(module.name) + attribute = modname[start_index:].lstrip(".").replace(".", "_") + try: + import_attr = module.getattr(attribute)[0] + except AttributeInferenceError: + raise AstroidBuildingError(modname=modname) + if isinstance(import_attr, nodes.Import): + submodule = MANAGER.ast_from_module_name(import_attr.names[0][0]) + return submodule + # Let dummy submodule imports pass through + # This will cause an Uninferable result, which is okay + return module + + +def _looks_like_decorated_with_six_add_metaclass(node): + if not node.decorators: + return False + + for decorator in node.decorators.nodes: + if not isinstance(decorator, nodes.Call): + continue + if decorator.func.as_string() == SIX_ADD_METACLASS: + return True + return False + + +def transform_six_add_metaclass(node): + """Check if the given class node is decorated with *six.add_metaclass* + + If so, inject its argument as the metaclass of the underlying class. + """ + if not node.decorators: + return + + for decorator in node.decorators.nodes: + if not isinstance(decorator, nodes.Call): + continue + + try: + func = next(decorator.func.infer()) + except InferenceError: + continue + if func.qname() == SIX_ADD_METACLASS and decorator.args: + metaclass = decorator.args[0] + node._metaclass = metaclass + return node + + +register_module_extender(MANAGER, "six", six_moves_transform) +register_module_extender( + MANAGER, "requests.packages.urllib3.packages.six", six_moves_transform +) +MANAGER.register_failed_import_hook(_six_fail_hook) +MANAGER.register_transform( + nodes.ClassDef, + transform_six_add_metaclass, + _looks_like_decorated_with_six_add_metaclass, +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_ssl.py b/venv/Lib/site-packages/astroid/brain/brain_ssl.py new file mode 100644 index 0000000..893d8a2 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_ssl.py @@ -0,0 +1,74 @@ +# Copyright (c) 2016 Claudiu Popa +# Copyright (c) 2016 Ceridwen + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid hooks for the ssl library.""" + +from astroid import MANAGER, register_module_extender +from astroid.builder import AstroidBuilder +from astroid import nodes +from astroid import parse + + +def ssl_transform(): + return parse( + """ + from _ssl import OPENSSL_VERSION_NUMBER, OPENSSL_VERSION_INFO, OPENSSL_VERSION + from _ssl import _SSLContext, MemoryBIO + from _ssl import ( + SSLError, SSLZeroReturnError, SSLWantReadError, SSLWantWriteError, + SSLSyscallError, SSLEOFError, + ) + from _ssl import CERT_NONE, CERT_OPTIONAL, CERT_REQUIRED + from _ssl import txt2obj as _txt2obj, nid2obj as _nid2obj + from _ssl import RAND_status, RAND_add, RAND_bytes, RAND_pseudo_bytes + try: + from _ssl import RAND_egd + except ImportError: + # LibreSSL does not provide RAND_egd + pass + from _ssl import (OP_ALL, OP_CIPHER_SERVER_PREFERENCE, + OP_NO_COMPRESSION, OP_NO_SSLv2, OP_NO_SSLv3, + OP_NO_TLSv1, OP_NO_TLSv1_1, OP_NO_TLSv1_2, + OP_SINGLE_DH_USE, OP_SINGLE_ECDH_USE) + + from _ssl import (ALERT_DESCRIPTION_ACCESS_DENIED, ALERT_DESCRIPTION_BAD_CERTIFICATE, + ALERT_DESCRIPTION_BAD_CERTIFICATE_HASH_VALUE, + ALERT_DESCRIPTION_BAD_CERTIFICATE_STATUS_RESPONSE, + ALERT_DESCRIPTION_BAD_RECORD_MAC, + ALERT_DESCRIPTION_CERTIFICATE_EXPIRED, + ALERT_DESCRIPTION_CERTIFICATE_REVOKED, + ALERT_DESCRIPTION_CERTIFICATE_UNKNOWN, + ALERT_DESCRIPTION_CERTIFICATE_UNOBTAINABLE, + ALERT_DESCRIPTION_CLOSE_NOTIFY, ALERT_DESCRIPTION_DECODE_ERROR, + ALERT_DESCRIPTION_DECOMPRESSION_FAILURE, + ALERT_DESCRIPTION_DECRYPT_ERROR, + ALERT_DESCRIPTION_HANDSHAKE_FAILURE, + ALERT_DESCRIPTION_ILLEGAL_PARAMETER, + ALERT_DESCRIPTION_INSUFFICIENT_SECURITY, + ALERT_DESCRIPTION_INTERNAL_ERROR, + ALERT_DESCRIPTION_NO_RENEGOTIATION, + ALERT_DESCRIPTION_PROTOCOL_VERSION, + ALERT_DESCRIPTION_RECORD_OVERFLOW, + ALERT_DESCRIPTION_UNEXPECTED_MESSAGE, + ALERT_DESCRIPTION_UNKNOWN_CA, + ALERT_DESCRIPTION_UNKNOWN_PSK_IDENTITY, + ALERT_DESCRIPTION_UNRECOGNIZED_NAME, + ALERT_DESCRIPTION_UNSUPPORTED_CERTIFICATE, + ALERT_DESCRIPTION_UNSUPPORTED_EXTENSION, + ALERT_DESCRIPTION_USER_CANCELLED) + from _ssl import (SSL_ERROR_EOF, SSL_ERROR_INVALID_ERROR_CODE, SSL_ERROR_SSL, + SSL_ERROR_SYSCALL, SSL_ERROR_WANT_CONNECT, SSL_ERROR_WANT_READ, + SSL_ERROR_WANT_WRITE, SSL_ERROR_WANT_X509_LOOKUP, SSL_ERROR_ZERO_RETURN) + from _ssl import VERIFY_CRL_CHECK_CHAIN, VERIFY_CRL_CHECK_LEAF, VERIFY_DEFAULT, VERIFY_X509_STRICT + from _ssl import HAS_SNI, HAS_ECDH, HAS_NPN, HAS_ALPN + from _ssl import _OPENSSL_API_VERSION + from _ssl import PROTOCOL_SSLv23, PROTOCOL_TLSv1, PROTOCOL_TLSv1_1, PROTOCOL_TLSv1_2 + from _ssl import PROTOCOL_TLS, PROTOCOL_TLS_CLIENT, PROTOCOL_TLS_SERVER + """ + ) + + +register_module_extender(MANAGER, "ssl", ssl_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_subprocess.py b/venv/Lib/site-packages/astroid/brain/brain_subprocess.py new file mode 100644 index 0000000..c14dc55 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_subprocess.py @@ -0,0 +1,111 @@ +# Copyright (c) 2016-2017 Claudiu Popa +# Copyright (c) 2017 Hugo +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +import sys +import textwrap + +import astroid + + +PY37 = sys.version_info >= (3, 7) +PY36 = sys.version_info >= (3, 6) + + +def _subprocess_transform(): + communicate = (bytes("string", "ascii"), bytes("string", "ascii")) + communicate_signature = "def communicate(self, input=None, timeout=None)" + if PY37: + init = """ + def __init__(self, args, bufsize=0, executable=None, + stdin=None, stdout=None, stderr=None, + preexec_fn=None, close_fds=False, shell=False, + cwd=None, env=None, universal_newlines=False, + startupinfo=None, creationflags=0, restore_signals=True, + start_new_session=False, pass_fds=(), *, + encoding=None, errors=None, text=None): + pass + """ + elif PY36: + init = """ + def __init__(self, args, bufsize=0, executable=None, + stdin=None, stdout=None, stderr=None, + preexec_fn=None, close_fds=False, shell=False, + cwd=None, env=None, universal_newlines=False, + startupinfo=None, creationflags=0, restore_signals=True, + start_new_session=False, pass_fds=(), *, + encoding=None, errors=None): + pass + """ + else: + init = """ + def __init__(self, args, bufsize=0, executable=None, + stdin=None, stdout=None, stderr=None, + preexec_fn=None, close_fds=False, shell=False, + cwd=None, env=None, universal_newlines=False, + startupinfo=None, creationflags=0, restore_signals=True, + start_new_session=False, pass_fds=()): + pass + """ + wait_signature = "def wait(self, timeout=None)" + ctx_manager = """ + def __enter__(self): return self + def __exit__(self, *args): pass + """ + py3_args = "args = []" + code = textwrap.dedent( + """ + def check_output( + args, *, + stdin=None, + stderr=None, + shell=False, + cwd=None, + encoding=None, + errors=None, + universal_newlines=False, + timeout=None, + env=None + ): + + if universal_newlines: + return "" + return b"" + class Popen(object): + returncode = pid = 0 + stdin = stdout = stderr = file() + %(py3_args)s + + %(communicate_signature)s: + return %(communicate)r + %(wait_signature)s: + return self.returncode + def poll(self): + return self.returncode + def send_signal(self, signal): + pass + def terminate(self): + pass + def kill(self): + pass + %(ctx_manager)s + """ + % { + "communicate": communicate, + "communicate_signature": communicate_signature, + "wait_signature": wait_signature, + "ctx_manager": ctx_manager, + "py3_args": py3_args, + } + ) + + init_lines = textwrap.dedent(init).splitlines() + indented_init = "\n".join(" " * 4 + line for line in init_lines) + code += indented_init + return astroid.parse(code) + + +astroid.register_module_extender(astroid.MANAGER, "subprocess", _subprocess_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_threading.py b/venv/Lib/site-packages/astroid/brain/brain_threading.py new file mode 100644 index 0000000..dffa55a --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_threading.py @@ -0,0 +1,31 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2016 Claudiu Popa +# Copyright (c) 2017 Łukasz Rogalski + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +import astroid + + +def _thread_transform(): + return astroid.parse( + """ + class lock(object): + def acquire(self, blocking=True, timeout=-1): + pass + def release(self): + pass + def __enter__(self): + return True + def __exit__(self, *args): + pass + def locked(self): + return False + + def Lock(): + return lock() + """ + ) + + +astroid.register_module_extender(astroid.MANAGER, "threading", _thread_transform) diff --git a/venv/Lib/site-packages/astroid/brain/brain_typing.py b/venv/Lib/site-packages/astroid/brain/brain_typing.py new file mode 100644 index 0000000..9ff7227 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_typing.py @@ -0,0 +1,96 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2017-2018 Claudiu Popa +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2017 David Euresti +# Copyright (c) 2018 Bryce Guinta + +"""Astroid hooks for typing.py support.""" +import typing + +from astroid import ( + MANAGER, + UseInferenceDefault, + extract_node, + inference_tip, + nodes, + InferenceError, +) + + +TYPING_NAMEDTUPLE_BASENAMES = {"NamedTuple", "typing.NamedTuple"} +TYPING_TYPEVARS = {"TypeVar", "NewType"} +TYPING_TYPEVARS_QUALIFIED = {"typing.TypeVar", "typing.NewType"} +TYPING_TYPE_TEMPLATE = """ +class Meta(type): + def __getitem__(self, item): + return self + + @property + def __args__(self): + return () + +class {0}(metaclass=Meta): + pass +""" +TYPING_MEMBERS = set(typing.__all__) + + +def looks_like_typing_typevar_or_newtype(node): + func = node.func + if isinstance(func, nodes.Attribute): + return func.attrname in TYPING_TYPEVARS + if isinstance(func, nodes.Name): + return func.name in TYPING_TYPEVARS + return False + + +def infer_typing_typevar_or_newtype(node, context=None): + """Infer a typing.TypeVar(...) or typing.NewType(...) call""" + try: + func = next(node.func.infer(context=context)) + except InferenceError as exc: + raise UseInferenceDefault from exc + + if func.qname() not in TYPING_TYPEVARS_QUALIFIED: + raise UseInferenceDefault + if not node.args: + raise UseInferenceDefault + + typename = node.args[0].as_string().strip("'") + node = extract_node(TYPING_TYPE_TEMPLATE.format(typename)) + return node.infer(context=context) + + +def _looks_like_typing_subscript(node): + """Try to figure out if a Subscript node *might* be a typing-related subscript""" + if isinstance(node, nodes.Name): + return node.name in TYPING_MEMBERS + elif isinstance(node, nodes.Attribute): + return node.attrname in TYPING_MEMBERS + elif isinstance(node, nodes.Subscript): + return _looks_like_typing_subscript(node.value) + return False + + +def infer_typing_attr(node, context=None): + """Infer a typing.X[...] subscript""" + try: + value = next(node.value.infer()) + except InferenceError as exc: + raise UseInferenceDefault from exc + + if not value.qname().startswith("typing."): + raise UseInferenceDefault + + node = extract_node(TYPING_TYPE_TEMPLATE.format(value.qname().split(".")[-1])) + return node.infer(context=context) + + +MANAGER.register_transform( + nodes.Call, + inference_tip(infer_typing_typevar_or_newtype), + looks_like_typing_typevar_or_newtype, +) +MANAGER.register_transform( + nodes.Subscript, inference_tip(infer_typing_attr), _looks_like_typing_subscript +) diff --git a/venv/Lib/site-packages/astroid/brain/brain_uuid.py b/venv/Lib/site-packages/astroid/brain/brain_uuid.py new file mode 100644 index 0000000..8bda631 --- /dev/null +++ b/venv/Lib/site-packages/astroid/brain/brain_uuid.py @@ -0,0 +1,20 @@ +# Copyright (c) 2017 Claudiu Popa + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Astroid hooks for the UUID module.""" + + +from astroid import MANAGER +from astroid import nodes + + +def _patch_uuid_class(node): + # The .int member is patched using __dict__ + node.locals["int"] = [nodes.Const(0, parent=node)] + + +MANAGER.register_transform( + nodes.ClassDef, _patch_uuid_class, lambda node: node.qname() == "uuid.UUID" +) diff --git a/venv/Lib/site-packages/astroid/builder.py b/venv/Lib/site-packages/astroid/builder.py new file mode 100644 index 0000000..ac71093 --- /dev/null +++ b/venv/Lib/site-packages/astroid/builder.py @@ -0,0 +1,435 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2006-2011, 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2013 Phil Schaf +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014-2015 Google, Inc. +# Copyright (c) 2014 Alexander Presnyakov +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2018 Anthony Sottile + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""The AstroidBuilder makes astroid from living object and / or from _ast + +The builder is not thread safe and can't be used to parse different sources +at the same time. +""" + +import os +import textwrap +from tokenize import detect_encoding + +from astroid._ast import _parse +from astroid import bases +from astroid import exceptions +from astroid import manager +from astroid import modutils +from astroid import raw_building +from astroid import rebuilder +from astroid import nodes +from astroid import util + +# The name of the transient function that is used to +# wrap expressions to be extracted when calling +# extract_node. +_TRANSIENT_FUNCTION = "__" + +# The comment used to select a statement to be extracted +# when calling extract_node. +_STATEMENT_SELECTOR = "#@" + +MANAGER = manager.AstroidManager() + + +def open_source_file(filename): + with open(filename, "rb") as byte_stream: + encoding = detect_encoding(byte_stream.readline)[0] + stream = open(filename, "r", newline=None, encoding=encoding) + data = stream.read() + return stream, encoding, data + + +def _can_assign_attr(node, attrname): + try: + slots = node.slots() + except NotImplementedError: + pass + else: + if slots and attrname not in {slot.value for slot in slots}: + return False + return True + + +class AstroidBuilder(raw_building.InspectBuilder): + """Class for building an astroid tree from source code or from a live module. + + The param *manager* specifies the manager class which should be used. + If no manager is given, then the default one will be used. The + param *apply_transforms* determines if the transforms should be + applied after the tree was built from source or from a live object, + by default being True. + """ + + # pylint: disable=redefined-outer-name + def __init__(self, manager=None, apply_transforms=True): + super(AstroidBuilder, self).__init__() + self._manager = manager or MANAGER + self._apply_transforms = apply_transforms + + def module_build(self, module, modname=None): + """Build an astroid from a living module instance.""" + node = None + path = getattr(module, "__file__", None) + if path is not None: + path_, ext = os.path.splitext(modutils._path_from_filename(path)) + if ext in (".py", ".pyc", ".pyo") and os.path.exists(path_ + ".py"): + node = self.file_build(path_ + ".py", modname) + if node is None: + # this is a built-in module + # get a partial representation by introspection + node = self.inspect_build(module, modname=modname, path=path) + if self._apply_transforms: + # We have to handle transformation by ourselves since the + # rebuilder isn't called for builtin nodes + node = self._manager.visit_transforms(node) + return node + + def file_build(self, path, modname=None): + """Build astroid from a source code file (i.e. from an ast) + + *path* is expected to be a python source file + """ + try: + stream, encoding, data = open_source_file(path) + except IOError as exc: + raise exceptions.AstroidBuildingError( + "Unable to load file {path}:\n{error}", + modname=modname, + path=path, + error=exc, + ) from exc + except (SyntaxError, LookupError) as exc: + raise exceptions.AstroidSyntaxError( + "Python 3 encoding specification error or unknown encoding:\n" + "{error}", + modname=modname, + path=path, + error=exc, + ) from exc + except UnicodeError as exc: # wrong encoding + # detect_encoding returns utf-8 if no encoding specified + raise exceptions.AstroidBuildingError( + "Wrong or no encoding specified for {filename}.", filename=path + ) from exc + with stream: + # get module name if necessary + if modname is None: + try: + modname = ".".join(modutils.modpath_from_file(path)) + except ImportError: + modname = os.path.splitext(os.path.basename(path))[0] + # build astroid representation + module = self._data_build(data, modname, path) + return self._post_build(module, encoding) + + def string_build(self, data, modname="", path=None): + """Build astroid from source code string.""" + module = self._data_build(data, modname, path) + module.file_bytes = data.encode("utf-8") + return self._post_build(module, "utf-8") + + def _post_build(self, module, encoding): + """Handles encoding and delayed nodes after a module has been built""" + module.file_encoding = encoding + self._manager.cache_module(module) + # post tree building steps after we stored the module in the cache: + for from_node in module._import_from_nodes: + if from_node.modname == "__future__": + for symbol, _ in from_node.names: + module.future_imports.add(symbol) + self.add_from_names_to_locals(from_node) + # handle delayed assattr nodes + for delayed in module._delayed_assattr: + self.delayed_assattr(delayed) + + # Visit the transforms + if self._apply_transforms: + module = self._manager.visit_transforms(module) + return module + + def _data_build(self, data, modname, path): + """Build tree node from data and add some informations""" + try: + node = _parse(data + "\n") + except (TypeError, ValueError, SyntaxError) as exc: + raise exceptions.AstroidSyntaxError( + "Parsing Python code failed:\n{error}", + source=data, + modname=modname, + path=path, + error=exc, + ) from exc + if path is not None: + node_file = os.path.abspath(path) + else: + node_file = "" + if modname.endswith(".__init__"): + modname = modname[:-9] + package = True + else: + package = ( + path is not None + and os.path.splitext(os.path.basename(path))[0] == "__init__" + ) + builder = rebuilder.TreeRebuilder(self._manager) + module = builder.visit_module(node, modname, node_file, package) + module._import_from_nodes = builder._import_from_nodes + module._delayed_assattr = builder._delayed_assattr + return module + + def add_from_names_to_locals(self, node): + """Store imported names to the locals + + Resort the locals if coming from a delayed node + """ + _key_func = lambda node: node.fromlineno + + def sort_locals(my_list): + my_list.sort(key=_key_func) + + for (name, asname) in node.names: + if name == "*": + try: + imported = node.do_import_module() + except exceptions.AstroidBuildingError: + continue + for name in imported.public_names(): + node.parent.set_local(name, node) + sort_locals(node.parent.scope().locals[name]) + else: + node.parent.set_local(asname or name, node) + sort_locals(node.parent.scope().locals[asname or name]) + + def delayed_assattr(self, node): + """Visit a AssAttr node + + This adds name to locals and handle members definition. + """ + try: + frame = node.frame() + for inferred in node.expr.infer(): + if inferred is util.Uninferable: + continue + try: + if inferred.__class__ is bases.Instance: + inferred = inferred._proxied + iattrs = inferred.instance_attrs + if not _can_assign_attr(inferred, node.attrname): + continue + elif isinstance(inferred, bases.Instance): + # Const, Tuple, ... we may be wrong, may be not, but + # anyway we don't want to pollute builtin's namespace + continue + elif inferred.is_function: + iattrs = inferred.instance_attrs + else: + iattrs = inferred.locals + except AttributeError: + # XXX log error + continue + values = iattrs.setdefault(node.attrname, []) + if node in values: + continue + # get assign in __init__ first XXX useful ? + if ( + frame.name == "__init__" + and values + and values[0].frame().name != "__init__" + ): + values.insert(0, node) + else: + values.append(node) + except exceptions.InferenceError: + pass + + +def build_namespace_package_module(name, path): + return nodes.Module(name, doc="", path=path, package=True) + + +def parse(code, module_name="", path=None, apply_transforms=True): + """Parses a source string in order to obtain an astroid AST from it + + :param str code: The code for the module. + :param str module_name: The name for the module, if any + :param str path: The path for the module + :param bool apply_transforms: + Apply the transforms for the give code. Use it if you + don't want the default transforms to be applied. + """ + code = textwrap.dedent(code) + builder = AstroidBuilder(manager=MANAGER, apply_transforms=apply_transforms) + return builder.string_build(code, modname=module_name, path=path) + + +def _extract_expressions(node): + """Find expressions in a call to _TRANSIENT_FUNCTION and extract them. + + The function walks the AST recursively to search for expressions that + are wrapped into a call to _TRANSIENT_FUNCTION. If it finds such an + expression, it completely removes the function call node from the tree, + replacing it by the wrapped expression inside the parent. + + :param node: An astroid node. + :type node: astroid.bases.NodeNG + :yields: The sequence of wrapped expressions on the modified tree + expression can be found. + """ + if ( + isinstance(node, nodes.Call) + and isinstance(node.func, nodes.Name) + and node.func.name == _TRANSIENT_FUNCTION + ): + real_expr = node.args[0] + real_expr.parent = node.parent + # Search for node in all _astng_fields (the fields checked when + # get_children is called) of its parent. Some of those fields may + # be lists or tuples, in which case the elements need to be checked. + # When we find it, replace it by real_expr, so that the AST looks + # like no call to _TRANSIENT_FUNCTION ever took place. + for name in node.parent._astroid_fields: + child = getattr(node.parent, name) + if isinstance(child, (list, tuple)): + for idx, compound_child in enumerate(child): + if compound_child is node: + child[idx] = real_expr + elif child is node: + setattr(node.parent, name, real_expr) + yield real_expr + else: + for child in node.get_children(): + yield from _extract_expressions(child) + + +def _find_statement_by_line(node, line): + """Extracts the statement on a specific line from an AST. + + If the line number of node matches line, it will be returned; + otherwise its children are iterated and the function is called + recursively. + + :param node: An astroid node. + :type node: astroid.bases.NodeNG + :param line: The line number of the statement to extract. + :type line: int + :returns: The statement on the line, or None if no statement for the line + can be found. + :rtype: astroid.bases.NodeNG or None + """ + if isinstance(node, (nodes.ClassDef, nodes.FunctionDef)): + # This is an inaccuracy in the AST: the nodes that can be + # decorated do not carry explicit information on which line + # the actual definition (class/def), but .fromline seems to + # be close enough. + node_line = node.fromlineno + else: + node_line = node.lineno + + if node_line == line: + return node + + for child in node.get_children(): + result = _find_statement_by_line(child, line) + if result: + return result + + return None + + +def extract_node(code, module_name=""): + """Parses some Python code as a module and extracts a designated AST node. + + Statements: + To extract one or more statement nodes, append #@ to the end of the line + + Examples: + >>> def x(): + >>> def y(): + >>> return 1 #@ + + The return statement will be extracted. + + >>> class X(object): + >>> def meth(self): #@ + >>> pass + + The function object 'meth' will be extracted. + + Expressions: + To extract arbitrary expressions, surround them with the fake + function call __(...). After parsing, the surrounded expression + will be returned and the whole AST (accessible via the returned + node's parent attribute) will look like the function call was + never there in the first place. + + Examples: + >>> a = __(1) + + The const node will be extracted. + + >>> def x(d=__(foo.bar)): pass + + The node containing the default argument will be extracted. + + >>> def foo(a, b): + >>> return 0 < __(len(a)) < b + + The node containing the function call 'len' will be extracted. + + If no statements or expressions are selected, the last toplevel + statement will be returned. + + If the selected statement is a discard statement, (i.e. an expression + turned into a statement), the wrapped expression is returned instead. + + For convenience, singleton lists are unpacked. + + :param str code: A piece of Python code that is parsed as + a module. Will be passed through textwrap.dedent first. + :param str module_name: The name of the module. + :returns: The designated node from the parse tree, or a list of nodes. + :rtype: astroid.bases.NodeNG, or a list of nodes. + """ + + def _extract(node): + if isinstance(node, nodes.Expr): + return node.value + + return node + + requested_lines = [] + for idx, line in enumerate(code.splitlines()): + if line.strip().endswith(_STATEMENT_SELECTOR): + requested_lines.append(idx + 1) + + tree = parse(code, module_name=module_name) + if not tree.body: + raise ValueError("Empty tree, cannot extract from it") + + extracted = [] + if requested_lines: + extracted = [_find_statement_by_line(tree, line) for line in requested_lines] + + # Modifies the tree. + extracted.extend(_extract_expressions(tree)) + + if not extracted: + extracted.append(tree.body[-1]) + + extracted = [_extract(node) for node in extracted] + if len(extracted) == 1: + return extracted[0] + return extracted diff --git a/venv/Lib/site-packages/astroid/context.py b/venv/Lib/site-packages/astroid/context.py new file mode 100644 index 0000000..70a9208 --- /dev/null +++ b/venv/Lib/site-packages/astroid/context.py @@ -0,0 +1,179 @@ +# Copyright (c) 2015-2016, 2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2018 Bryce Guinta +# Copyright (c) 2018 Nick Drozd + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Various context related utilities, including inference and call contexts.""" +import contextlib +import pprint +from typing import Optional + + +class InferenceContext: + """Provide context for inference + + Store already inferred nodes to save time + Account for already visited nodes to infinite stop infinite recursion + """ + + __slots__ = ( + "path", + "lookupname", + "callcontext", + "boundnode", + "inferred", + "extra_context", + ) + + def __init__(self, path=None, inferred=None): + self.path = path or set() + """ + :type: set(tuple(NodeNG, optional(str))) + + Path of visited nodes and their lookupname + + Currently this key is ``(node, context.lookupname)`` + """ + self.lookupname = None + """ + :type: optional[str] + + The original name of the node + + e.g. + foo = 1 + The inference of 'foo' is nodes.Const(1) but the lookup name is 'foo' + """ + self.callcontext = None + """ + :type: optional[CallContext] + + The call arguments and keywords for the given context + """ + self.boundnode = None + """ + :type: optional[NodeNG] + + The bound node of the given context + + e.g. the bound node of object.__new__(cls) is the object node + """ + self.inferred = inferred or {} + """ + :type: dict(seq, seq) + + Inferred node contexts to their mapped results + Currently the key is ``(node, lookupname, callcontext, boundnode)`` + and the value is tuple of the inferred results + """ + self.extra_context = {} + """ + :type: dict(NodeNG, Context) + + Context that needs to be passed down through call stacks + for call arguments + """ + + def push(self, node): + """Push node into inference path + + :return: True if node is already in context path else False + :rtype: bool + + Allows one to see if the given node has already + been looked at for this inference context""" + name = self.lookupname + if (node, name) in self.path: + return True + + self.path.add((node, name)) + return False + + def clone(self): + """Clone inference path + + For example, each side of a binary operation (BinOp) + starts with the same context but diverge as each side is inferred + so the InferenceContext will need be cloned""" + # XXX copy lookupname/callcontext ? + clone = InferenceContext(self.path, inferred=self.inferred) + clone.callcontext = self.callcontext + clone.boundnode = self.boundnode + clone.extra_context = self.extra_context + return clone + + def cache_generator(self, key, generator): + """Cache result of generator into dictionary + + Used to cache inference results""" + results = [] + for result in generator: + results.append(result) + yield result + + self.inferred[key] = tuple(results) + + @contextlib.contextmanager + def restore_path(self): + path = set(self.path) + yield + self.path = path + + def __str__(self): + state = ( + "%s=%s" + % (field, pprint.pformat(getattr(self, field), width=80 - len(field))) + for field in self.__slots__ + ) + return "%s(%s)" % (type(self).__name__, ",\n ".join(state)) + + +class CallContext: + """Holds information for a call site.""" + + __slots__ = ("args", "keywords") + + def __init__(self, args, keywords=None): + """ + :param List[NodeNG] args: Call positional arguments + :param Union[List[nodes.Keyword], None] keywords: Call keywords + """ + self.args = args + if keywords: + keywords = [(arg.arg, arg.value) for arg in keywords] + else: + keywords = [] + self.keywords = keywords + + +def copy_context(context: Optional[InferenceContext]) -> InferenceContext: + """Clone a context if given, or return a fresh contexxt""" + if context is not None: + return context.clone() + + return InferenceContext() + + +def bind_context_to_node(context, node): + """Give a context a boundnode + to retrieve the correct function name or attribute value + with from further inference. + + Do not use an existing context since the boundnode could then + be incorrectly propagated higher up in the call stack. + + :param context: Context to use + :type context: Optional(context) + + :param node: Node to do name lookups from + :type node NodeNG: + + :returns: A new context + :rtype: InferenceContext + """ + context = copy_context(context) + context.boundnode = node + return context diff --git a/venv/Lib/site-packages/astroid/decorators.py b/venv/Lib/site-packages/astroid/decorators.py new file mode 100644 index 0000000..1448757 --- /dev/null +++ b/venv/Lib/site-packages/astroid/decorators.py @@ -0,0 +1,141 @@ +# Copyright (c) 2015-2016, 2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 Ashley Whetter +# Copyright (c) 2018 HoverHell +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +""" A few useful function/method decorators.""" + +import functools + +import wrapt + +from astroid import context as contextmod +from astroid import exceptions +from astroid import util + + +@wrapt.decorator +def cached(func, instance, args, kwargs): + """Simple decorator to cache result of method calls without args.""" + cache = getattr(instance, "__cache", None) + if cache is None: + instance.__cache = cache = {} + try: + return cache[func] + except KeyError: + cache[func] = result = func(*args, **kwargs) + return result + + +class cachedproperty: + """ Provides a cached property equivalent to the stacking of + @cached and @property, but more efficient. + + After first usage, the becomes part of the object's + __dict__. Doing: + + del obj. empties the cache. + + Idea taken from the pyramid_ framework and the mercurial_ project. + + .. _pyramid: http://pypi.python.org/pypi/pyramid + .. _mercurial: http://pypi.python.org/pypi/Mercurial + """ + + __slots__ = ("wrapped",) + + def __init__(self, wrapped): + try: + wrapped.__name__ + except AttributeError as exc: + raise TypeError("%s must have a __name__ attribute" % wrapped) from exc + self.wrapped = wrapped + + @property + def __doc__(self): + doc = getattr(self.wrapped, "__doc__", None) + return "%s" % ( + "\n%s" % doc if doc else "" + ) + + def __get__(self, inst, objtype=None): + if inst is None: + return self + val = self.wrapped(inst) + setattr(inst, self.wrapped.__name__, val) + return val + + +def path_wrapper(func): + """return the given infer function wrapped to handle the path + + Used to stop inference if the node has already been looked + at for a given `InferenceContext` to prevent infinite recursion + """ + + @functools.wraps(func) + def wrapped(node, context=None, _func=func, **kwargs): + """wrapper function handling context""" + if context is None: + context = contextmod.InferenceContext() + if context.push(node): + return None + + yielded = set() + generator = _func(node, context, **kwargs) + try: + while True: + res = next(generator) + # unproxy only true instance, not const, tuple, dict... + if res.__class__.__name__ == "Instance": + ares = res._proxied + else: + ares = res + if ares not in yielded: + yield res + yielded.add(ares) + except StopIteration as error: + if error.args: + return error.args[0] + return None + + return wrapped + + +@wrapt.decorator +def yes_if_nothing_inferred(func, instance, args, kwargs): + generator = func(*args, **kwargs) + + try: + yield next(generator) + except StopIteration: + # generator is empty + yield util.Uninferable + return + + yield from generator + + +@wrapt.decorator +def raise_if_nothing_inferred(func, instance, args, kwargs): + generator = func(*args, **kwargs) + + try: + yield next(generator) + except StopIteration as error: + # generator is empty + if error.args: + # pylint: disable=not-a-mapping + raise exceptions.InferenceError(**error.args[0]) + raise exceptions.InferenceError( + "StopIteration raised without any error information." + ) + + yield from generator diff --git a/venv/Lib/site-packages/astroid/exceptions.py b/venv/Lib/site-packages/astroid/exceptions.py new file mode 100644 index 0000000..7e9d655 --- /dev/null +++ b/venv/Lib/site-packages/astroid/exceptions.py @@ -0,0 +1,230 @@ +# Copyright (c) 2007, 2009-2010, 2013 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2015-2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""this module contains exceptions used in the astroid library +""" +from astroid import util + + +class AstroidError(Exception): + """base exception class for all astroid related exceptions + + AstroidError and its subclasses are structured, intended to hold + objects representing state when the exception is thrown. Field + values are passed to the constructor as keyword-only arguments. + Each subclass has its own set of standard fields, but use your + best judgment to decide whether a specific exception instance + needs more or fewer fields for debugging. Field values may be + used to lazily generate the error message: self.message.format() + will be called with the field names and values supplied as keyword + arguments. + """ + + def __init__(self, message="", **kws): + super(AstroidError, self).__init__(message) + self.message = message + for key, value in kws.items(): + setattr(self, key, value) + + def __str__(self): + return self.message.format(**vars(self)) + + +class AstroidBuildingError(AstroidError): + """exception class when we are unable to build an astroid representation + + Standard attributes: + modname: Name of the module that AST construction failed for. + error: Exception raised during construction. + """ + + def __init__(self, message="Failed to import module {modname}.", **kws): + super(AstroidBuildingError, self).__init__(message, **kws) + + +class AstroidImportError(AstroidBuildingError): + """Exception class used when a module can't be imported by astroid.""" + + +class TooManyLevelsError(AstroidImportError): + """Exception class which is raised when a relative import was beyond the top-level. + + Standard attributes: + level: The level which was attempted. + name: the name of the module on which the relative import was attempted. + """ + + level = None + name = None + + def __init__( + self, + message="Relative import with too many levels " "({level}) for module {name!r}", + **kws + ): + super(TooManyLevelsError, self).__init__(message, **kws) + + +class AstroidSyntaxError(AstroidBuildingError): + """Exception class used when a module can't be parsed.""" + + +class NoDefault(AstroidError): + """raised by function's `default_value` method when an argument has + no default value + + Standard attributes: + func: Function node. + name: Name of argument without a default. + """ + + func = None + name = None + + def __init__(self, message="{func!r} has no default for {name!r}.", **kws): + super(NoDefault, self).__init__(message, **kws) + + +class ResolveError(AstroidError): + """Base class of astroid resolution/inference error. + + ResolveError is not intended to be raised. + + Standard attributes: + context: InferenceContext object. + """ + + context = None + + +class MroError(ResolveError): + """Error raised when there is a problem with method resolution of a class. + + Standard attributes: + mros: A sequence of sequences containing ClassDef nodes. + cls: ClassDef node whose MRO resolution failed. + context: InferenceContext object. + """ + + mros = () + cls = None + + def __str__(self): + mro_names = ", ".join( + "({})".format(", ".join(b.name for b in m)) for m in self.mros + ) + return self.message.format(mros=mro_names, cls=self.cls) + + +class DuplicateBasesError(MroError): + """Error raised when there are duplicate bases in the same class bases.""" + + +class InconsistentMroError(MroError): + """Error raised when a class's MRO is inconsistent.""" + + +class SuperError(ResolveError): + """Error raised when there is a problem with a *super* call. + + Standard attributes: + *super_*: The Super instance that raised the exception. + context: InferenceContext object. + """ + + super_ = None + + def __str__(self): + return self.message.format(**vars(self.super_)) + + +class InferenceError(ResolveError): + """raised when we are unable to infer a node + + Standard attributes: + node: The node inference was called on. + context: InferenceContext object. + """ + + node = None + context = None + + def __init__(self, message="Inference failed for {node!r}.", **kws): + super(InferenceError, self).__init__(message, **kws) + + +# Why does this inherit from InferenceError rather than ResolveError? +# Changing it causes some inference tests to fail. +class NameInferenceError(InferenceError): + """Raised when a name lookup fails, corresponds to NameError. + + Standard attributes: + name: The name for which lookup failed, as a string. + scope: The node representing the scope in which the lookup occurred. + context: InferenceContext object. + """ + + name = None + scope = None + + def __init__(self, message="{name!r} not found in {scope!r}.", **kws): + super(NameInferenceError, self).__init__(message, **kws) + + +class AttributeInferenceError(ResolveError): + """Raised when an attribute lookup fails, corresponds to AttributeError. + + Standard attributes: + target: The node for which lookup failed. + attribute: The attribute for which lookup failed, as a string. + context: InferenceContext object. + """ + + target = None + attribute = None + + def __init__(self, message="{attribute!r} not found on {target!r}.", **kws): + super(AttributeInferenceError, self).__init__(message, **kws) + + +class UseInferenceDefault(Exception): + """exception to be raised in custom inference function to indicate that it + should go back to the default behaviour + """ + + +class _NonDeducibleTypeHierarchy(Exception): + """Raised when is_subtype / is_supertype can't deduce the relation between two types.""" + + +class AstroidIndexError(AstroidError): + """Raised when an Indexable / Mapping does not have an index / key.""" + + +class AstroidTypeError(AstroidError): + """Raised when a TypeError would be expected in Python code.""" + + +class InferenceOverwriteError(AstroidError): + """Raised when an inference tip is overwritten + + Currently only used for debugging. + """ + + +# Backwards-compatibility aliases +OperationError = util.BadOperationMessage +UnaryOperationError = util.BadUnaryOperationMessage +BinaryOperationError = util.BadBinaryOperationMessage + +SuperArgumentTypeError = SuperError +UnresolvableName = NameInferenceError +NotFoundError = AttributeInferenceError +AstroidBuildingException = AstroidBuildingError diff --git a/venv/Lib/site-packages/astroid/helpers.py b/venv/Lib/site-packages/astroid/helpers.py new file mode 100644 index 0000000..be133b3 --- /dev/null +++ b/venv/Lib/site-packages/astroid/helpers.py @@ -0,0 +1,273 @@ +# Copyright (c) 2015-2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +""" +Various helper utilities. +""" + +import builtins as builtins_mod + +from astroid import bases +from astroid import context as contextmod +from astroid import exceptions +from astroid import manager +from astroid import nodes +from astroid import raw_building +from astroid import scoped_nodes +from astroid import util + + +BUILTINS = builtins_mod.__name__ + + +def _build_proxy_class(cls_name, builtins): + proxy = raw_building.build_class(cls_name) + proxy.parent = builtins + return proxy + + +def _function_type(function, builtins): + if isinstance(function, scoped_nodes.Lambda): + if function.root().name == BUILTINS: + cls_name = "builtin_function_or_method" + else: + cls_name = "function" + elif isinstance(function, bases.BoundMethod): + cls_name = "method" + elif isinstance(function, bases.UnboundMethod): + cls_name = "function" + return _build_proxy_class(cls_name, builtins) + + +def _object_type(node, context=None): + astroid_manager = manager.AstroidManager() + builtins = astroid_manager.builtins_module + context = context or contextmod.InferenceContext() + + for inferred in node.infer(context=context): + if isinstance(inferred, scoped_nodes.ClassDef): + if inferred.newstyle: + metaclass = inferred.metaclass(context=context) + if metaclass: + yield metaclass + continue + yield builtins.getattr("type")[0] + elif isinstance(inferred, (scoped_nodes.Lambda, bases.UnboundMethod)): + yield _function_type(inferred, builtins) + elif isinstance(inferred, scoped_nodes.Module): + yield _build_proxy_class("module", builtins) + else: + yield inferred._proxied + + +def object_type(node, context=None): + """Obtain the type of the given node + + This is used to implement the ``type`` builtin, which means that it's + used for inferring type calls, as well as used in a couple of other places + in the inference. + The node will be inferred first, so this function can support all + sorts of objects, as long as they support inference. + """ + + try: + types = set(_object_type(node, context)) + except exceptions.InferenceError: + return util.Uninferable + if len(types) > 1 or not types: + return util.Uninferable + return list(types)[0] + + +def _object_type_is_subclass(obj_type, class_or_seq, context=None): + if not isinstance(class_or_seq, (tuple, list)): + class_seq = (class_or_seq,) + else: + class_seq = class_or_seq + + if obj_type is util.Uninferable: + return util.Uninferable + + # Instances are not types + class_seq = [ + item if not isinstance(item, bases.Instance) else util.Uninferable + for item in class_seq + ] + # strict compatibility with issubclass + # issubclass(type, (object, 1)) evaluates to true + # issubclass(object, (1, type)) raises TypeError + for klass in class_seq: + if klass is util.Uninferable: + raise exceptions.AstroidTypeError("arg 2 must be a type or tuple of types") + + for obj_subclass in obj_type.mro(): + if obj_subclass == klass: + return True + return False + + +def object_isinstance(node, class_or_seq, context=None): + """Check if a node 'isinstance' any node in class_or_seq + + :param node: A given node + :param class_or_seq: Union[nodes.NodeNG, Sequence[nodes.NodeNG]] + :rtype: bool + + :raises AstroidTypeError: if the given ``classes_or_seq`` are not types + """ + obj_type = object_type(node, context) + if obj_type is util.Uninferable: + return util.Uninferable + return _object_type_is_subclass(obj_type, class_or_seq, context=context) + + +def object_issubclass(node, class_or_seq, context=None): + """Check if a type is a subclass of any node in class_or_seq + + :param node: A given node + :param class_or_seq: Union[Nodes.NodeNG, Sequence[nodes.NodeNG]] + :rtype: bool + + :raises AstroidTypeError: if the given ``classes_or_seq`` are not types + :raises AstroidError: if the type of the given node cannot be inferred + or its type's mro doesn't work + """ + if not isinstance(node, nodes.ClassDef): + raise TypeError("{node} needs to be a ClassDef node".format(node=node)) + return _object_type_is_subclass(node, class_or_seq, context=context) + + +def safe_infer(node, context=None): + """Return the inferred value for the given node. + + Return None if inference failed or if there is some ambiguity (more than + one node has been inferred). + """ + try: + inferit = node.infer(context=context) + value = next(inferit) + except exceptions.InferenceError: + return None + try: + next(inferit) + return None # None if there is ambiguity on the inferred node + except exceptions.InferenceError: + return None # there is some kind of ambiguity + except StopIteration: + return value + + +def has_known_bases(klass, context=None): + """Return true if all base classes of a class could be inferred.""" + try: + return klass._all_bases_known + except AttributeError: + pass + for base in klass.bases: + result = safe_infer(base, context=context) + # TODO: check for A->B->A->B pattern in class structure too? + if ( + not isinstance(result, scoped_nodes.ClassDef) + or result is klass + or not has_known_bases(result, context=context) + ): + klass._all_bases_known = False + return False + klass._all_bases_known = True + return True + + +def _type_check(type1, type2): + if not all(map(has_known_bases, (type1, type2))): + raise exceptions._NonDeducibleTypeHierarchy + + if not all([type1.newstyle, type2.newstyle]): + return False + try: + return type1 in type2.mro()[:-1] + except exceptions.MroError: + # The MRO is invalid. + raise exceptions._NonDeducibleTypeHierarchy + + +def is_subtype(type1, type2): + """Check if *type1* is a subtype of *type2*.""" + return _type_check(type1=type2, type2=type1) + + +def is_supertype(type1, type2): + """Check if *type2* is a supertype of *type1*.""" + return _type_check(type1, type2) + + +def class_instance_as_index(node): + """Get the value as an index for the given instance. + + If an instance provides an __index__ method, then it can + be used in some scenarios where an integer is expected, + for instance when multiplying or subscripting a list. + """ + context = contextmod.InferenceContext() + context.callcontext = contextmod.CallContext(args=[node]) + + try: + for inferred in node.igetattr("__index__", context=context): + if not isinstance(inferred, bases.BoundMethod): + continue + + for result in inferred.infer_call_result(node, context=context): + if isinstance(result, nodes.Const) and isinstance(result.value, int): + return result + except exceptions.InferenceError: + pass + return None + + +def object_len(node, context=None): + """Infer length of given node object + + :param Union[nodes.ClassDef, nodes.Instance] node: + :param node: Node to infer length of + + :raises AstroidTypeError: If an invalid node is returned + from __len__ method or no __len__ method exists + :raises InferenceError: If the given node cannot be inferred + or if multiple nodes are inferred + :rtype int: Integer length of node + """ + # pylint: disable=import-outside-toplevel; circular import + from astroid.objects import FrozenSet + + inferred_node = safe_infer(node, context=context) + if inferred_node is None or inferred_node is util.Uninferable: + raise exceptions.InferenceError(node=node) + if isinstance(inferred_node, nodes.Const) and isinstance( + inferred_node.value, (bytes, str) + ): + return len(inferred_node.value) + if isinstance(inferred_node, (nodes.List, nodes.Set, nodes.Tuple, FrozenSet)): + return len(inferred_node.elts) + if isinstance(inferred_node, nodes.Dict): + return len(inferred_node.items) + try: + node_type = object_type(inferred_node, context=context) + len_call = next(node_type.igetattr("__len__", context=context)) + except exceptions.AttributeInferenceError: + raise exceptions.AstroidTypeError( + "object of type '{}' has no len()".format(len_call.pytype()) + ) + + result_of_len = next(len_call.infer_call_result(node, context)) + if ( + isinstance(result_of_len, nodes.Const) + and result_of_len.pytype() == "builtins.int" + ): + return result_of_len.value + raise exceptions.AstroidTypeError( + "'{}' object cannot be interpreted as an integer".format(result_of_len) + ) diff --git a/venv/Lib/site-packages/astroid/inference.py b/venv/Lib/site-packages/astroid/inference.py new file mode 100644 index 0000000..77c6b1d --- /dev/null +++ b/venv/Lib/site-packages/astroid/inference.py @@ -0,0 +1,943 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2006-2011, 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2012 FELD Boris +# Copyright (c) 2013-2014 Google, Inc. +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Dmitry Pribysh +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2017 Michał Masłowski +# Copyright (c) 2017 Calen Pennington +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2018 Bryce Guinta +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 Ashley Whetter +# Copyright (c) 2018 HoverHell + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""this module contains a set of functions to handle inference on astroid trees +""" + +import functools +import itertools +import operator + +from astroid import bases +from astroid import context as contextmod +from astroid import exceptions +from astroid import decorators +from astroid import helpers +from astroid import manager +from astroid import nodes +from astroid.interpreter import dunder_lookup +from astroid import protocols +from astroid import util + + +MANAGER = manager.AstroidManager() + + +# .infer method ############################################################### + + +def infer_end(self, context=None): + """inference's end for node such as Module, ClassDef, FunctionDef, + Const... + + """ + yield self + + +nodes.Module._infer = infer_end +nodes.ClassDef._infer = infer_end +nodes.FunctionDef._infer = infer_end +nodes.Lambda._infer = infer_end +nodes.Const._infer = infer_end +nodes.Slice._infer = infer_end + + +def _infer_sequence_helper(node, context=None): + """Infer all values based on _BaseContainer.elts""" + values = [] + + for elt in node.elts: + if isinstance(elt, nodes.Starred): + starred = helpers.safe_infer(elt.value, context) + if not starred: + raise exceptions.InferenceError(node=node, context=context) + if not hasattr(starred, "elts"): + raise exceptions.InferenceError(node=node, context=context) + values.extend(_infer_sequence_helper(starred)) + elif isinstance(elt, nodes.NamedExpr): + value = helpers.safe_infer(elt.value, context) + if not value: + raise exceptions.InferenceError(node=node, context=context) + values.append(value) + else: + values.append(elt) + return values + + +@decorators.raise_if_nothing_inferred +def infer_sequence(self, context=None): + has_starred_named_expr = any( + isinstance(e, (nodes.Starred, nodes.NamedExpr)) for e in self.elts + ) + if has_starred_named_expr: + values = _infer_sequence_helper(self, context) + new_seq = type(self)( + lineno=self.lineno, col_offset=self.col_offset, parent=self.parent + ) + new_seq.postinit(values) + + yield new_seq + else: + yield self + + +nodes.List._infer = infer_sequence +nodes.Tuple._infer = infer_sequence +nodes.Set._infer = infer_sequence + + +def infer_map(self, context=None): + if not any(isinstance(k, nodes.DictUnpack) for k, _ in self.items): + yield self + else: + items = _infer_map(self, context) + new_seq = type(self)(self.lineno, self.col_offset, self.parent) + new_seq.postinit(list(items.items())) + yield new_seq + + +def _update_with_replacement(lhs_dict, rhs_dict): + """Delete nodes that equate to duplicate keys + + Since an astroid node doesn't 'equal' another node with the same value, + this function uses the as_string method to make sure duplicate keys + don't get through + + Note that both the key and the value are astroid nodes + + Fixes issue with DictUnpack causing duplicte keys + in inferred Dict items + + :param dict(nodes.NodeNG, nodes.NodeNG) lhs_dict: Dictionary to 'merge' nodes into + :param dict(nodes.NodeNG, nodes.NodeNG) rhs_dict: Dictionary with nodes to pull from + :return dict(nodes.NodeNG, nodes.NodeNG): merged dictionary of nodes + """ + combined_dict = itertools.chain(lhs_dict.items(), rhs_dict.items()) + # Overwrite keys which have the same string values + string_map = {key.as_string(): (key, value) for key, value in combined_dict} + # Return to dictionary + return dict(string_map.values()) + + +def _infer_map(node, context): + """Infer all values based on Dict.items""" + values = {} + for name, value in node.items: + if isinstance(name, nodes.DictUnpack): + double_starred = helpers.safe_infer(value, context) + if not double_starred: + raise exceptions.InferenceError + if not isinstance(double_starred, nodes.Dict): + raise exceptions.InferenceError(node=node, context=context) + unpack_items = _infer_map(double_starred, context) + values = _update_with_replacement(values, unpack_items) + else: + key = helpers.safe_infer(name, context=context) + value = helpers.safe_infer(value, context=context) + if any(not elem for elem in (key, value)): + raise exceptions.InferenceError(node=node, context=context) + values = _update_with_replacement(values, {key: value}) + return values + + +nodes.Dict._infer = infer_map + + +def _higher_function_scope(node): + """ Search for the first function which encloses the given + scope. This can be used for looking up in that function's + scope, in case looking up in a lower scope for a particular + name fails. + + :param node: A scope node. + :returns: + ``None``, if no parent function scope was found, + otherwise an instance of :class:`astroid.scoped_nodes.Function`, + which encloses the given node. + """ + current = node + while current.parent and not isinstance(current.parent, nodes.FunctionDef): + current = current.parent + if current and current.parent: + return current.parent + return None + + +def infer_name(self, context=None): + """infer a Name: use name lookup rules""" + frame, stmts = self.lookup(self.name) + if not stmts: + # Try to see if the name is enclosed in a nested function + # and use the higher (first function) scope for searching. + parent_function = _higher_function_scope(self.scope()) + if parent_function: + _, stmts = parent_function.lookup(self.name) + + if not stmts: + raise exceptions.NameInferenceError( + name=self.name, scope=self.scope(), context=context + ) + context = contextmod.copy_context(context) + context.lookupname = self.name + return bases._infer_stmts(stmts, context, frame) + + +# pylint: disable=no-value-for-parameter +nodes.Name._infer = decorators.raise_if_nothing_inferred( + decorators.path_wrapper(infer_name) +) +nodes.AssignName.infer_lhs = infer_name # won't work with a path wrapper + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def infer_call(self, context=None): + """infer a Call node by trying to guess what the function returns""" + callcontext = contextmod.copy_context(context) + callcontext.callcontext = contextmod.CallContext( + args=self.args, keywords=self.keywords + ) + callcontext.boundnode = None + if context is not None: + callcontext.extra_context = _populate_context_lookup(self, context.clone()) + + for callee in self.func.infer(context): + if callee is util.Uninferable: + yield callee + continue + try: + if hasattr(callee, "infer_call_result"): + yield from callee.infer_call_result(caller=self, context=callcontext) + except exceptions.InferenceError: + continue + return dict(node=self, context=context) + + +nodes.Call._infer = infer_call + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def infer_import(self, context=None, asname=True): + """infer an Import node: return the imported module/object""" + name = context.lookupname + if name is None: + raise exceptions.InferenceError(node=self, context=context) + + try: + if asname: + yield self.do_import_module(self.real_name(name)) + else: + yield self.do_import_module(name) + except exceptions.AstroidBuildingError as exc: + raise exceptions.InferenceError(node=self, context=context) from exc + + +nodes.Import._infer = infer_import + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def infer_import_from(self, context=None, asname=True): + """infer a ImportFrom node: return the imported module/object""" + name = context.lookupname + if name is None: + raise exceptions.InferenceError(node=self, context=context) + if asname: + name = self.real_name(name) + + try: + module = self.do_import_module() + except exceptions.AstroidBuildingError as exc: + raise exceptions.InferenceError(node=self, context=context) from exc + + try: + context = contextmod.copy_context(context) + context.lookupname = name + stmts = module.getattr(name, ignore_locals=module is self.root()) + return bases._infer_stmts(stmts, context) + except exceptions.AttributeInferenceError as error: + raise exceptions.InferenceError( + error.message, target=self, attribute=name, context=context + ) from error + + +nodes.ImportFrom._infer = infer_import_from + + +def infer_attribute(self, context=None): + """infer an Attribute node by using getattr on the associated object""" + for owner in self.expr.infer(context): + if owner is util.Uninferable: + yield owner + continue + + if context and context.boundnode: + # This handles the situation where the attribute is accessed through a subclass + # of a base class and the attribute is defined at the base class's level, + # by taking in consideration a redefinition in the subclass. + if isinstance(owner, bases.Instance) and isinstance( + context.boundnode, bases.Instance + ): + try: + if helpers.is_subtype( + helpers.object_type(context.boundnode), + helpers.object_type(owner), + ): + owner = context.boundnode + except exceptions._NonDeducibleTypeHierarchy: + # Can't determine anything useful. + pass + + try: + context.boundnode = owner + yield from owner.igetattr(self.attrname, context) + context.boundnode = None + except (exceptions.AttributeInferenceError, exceptions.InferenceError): + context.boundnode = None + except AttributeError: + # XXX method / function + context.boundnode = None + return dict(node=self, context=context) + + +nodes.Attribute._infer = decorators.raise_if_nothing_inferred( + decorators.path_wrapper(infer_attribute) +) +# won't work with a path wrapper +nodes.AssignAttr.infer_lhs = decorators.raise_if_nothing_inferred(infer_attribute) + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def infer_global(self, context=None): + if context.lookupname is None: + raise exceptions.InferenceError(node=self, context=context) + try: + return bases._infer_stmts(self.root().getattr(context.lookupname), context) + except exceptions.AttributeInferenceError as error: + raise exceptions.InferenceError( + error.message, target=self, attribute=context.lookupname, context=context + ) from error + + +nodes.Global._infer = infer_global + + +_SUBSCRIPT_SENTINEL = object() + + +@decorators.raise_if_nothing_inferred +def infer_subscript(self, context=None): + """Inference for subscripts + + We're understanding if the index is a Const + or a slice, passing the result of inference + to the value's `getitem` method, which should + handle each supported index type accordingly. + """ + + found_one = False + for value in self.value.infer(context): + if value is util.Uninferable: + yield util.Uninferable + return None + for index in self.slice.infer(context): + if index is util.Uninferable: + yield util.Uninferable + return None + + # Try to deduce the index value. + index_value = _SUBSCRIPT_SENTINEL + if value.__class__ == bases.Instance: + index_value = index + else: + if index.__class__ == bases.Instance: + instance_as_index = helpers.class_instance_as_index(index) + if instance_as_index: + index_value = instance_as_index + else: + index_value = index + if index_value is _SUBSCRIPT_SENTINEL: + raise exceptions.InferenceError(node=self, context=context) + + try: + assigned = value.getitem(index_value, context) + except ( + exceptions.AstroidTypeError, + exceptions.AstroidIndexError, + exceptions.AttributeInferenceError, + AttributeError, + ) as exc: + raise exceptions.InferenceError(node=self, context=context) from exc + + # Prevent inferring if the inferred subscript + # is the same as the original subscripted object. + if self is assigned or assigned is util.Uninferable: + yield util.Uninferable + return None + yield from assigned.infer(context) + found_one = True + + if found_one: + return dict(node=self, context=context) + return None + + +nodes.Subscript._infer = decorators.path_wrapper(infer_subscript) +nodes.Subscript.infer_lhs = infer_subscript + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def _infer_boolop(self, context=None): + """Infer a boolean operation (and / or / not). + + The function will calculate the boolean operation + for all pairs generated through inference for each component + node. + """ + values = self.values + if self.op == "or": + predicate = operator.truth + else: + predicate = operator.not_ + + try: + values = [value.infer(context=context) for value in values] + except exceptions.InferenceError: + yield util.Uninferable + return None + + for pair in itertools.product(*values): + if any(item is util.Uninferable for item in pair): + # Can't infer the final result, just yield Uninferable. + yield util.Uninferable + continue + + bool_values = [item.bool_value() for item in pair] + if any(item is util.Uninferable for item in bool_values): + # Can't infer the final result, just yield Uninferable. + yield util.Uninferable + continue + + # Since the boolean operations are short circuited operations, + # this code yields the first value for which the predicate is True + # and if no value respected the predicate, then the last value will + # be returned (or Uninferable if there was no last value). + # This is conforming to the semantics of `and` and `or`: + # 1 and 0 -> 1 + # 0 and 1 -> 0 + # 1 or 0 -> 1 + # 0 or 1 -> 1 + value = util.Uninferable + for value, bool_value in zip(pair, bool_values): + if predicate(bool_value): + yield value + break + else: + yield value + + return dict(node=self, context=context) + + +nodes.BoolOp._infer = _infer_boolop + + +# UnaryOp, BinOp and AugAssign inferences + + +def _filter_operation_errors(self, infer_callable, context, error): + for result in infer_callable(self, context): + if isinstance(result, error): + # For the sake of .infer(), we don't care about operation + # errors, which is the job of pylint. So return something + # which shows that we can't infer the result. + yield util.Uninferable + else: + yield result + + +def _infer_unaryop(self, context=None): + """Infer what an UnaryOp should return when evaluated.""" + for operand in self.operand.infer(context): + try: + yield operand.infer_unary_op(self.op) + except TypeError as exc: + # The operand doesn't support this operation. + yield util.BadUnaryOperationMessage(operand, self.op, exc) + except AttributeError as exc: + meth = protocols.UNARY_OP_METHOD[self.op] + if meth is None: + # `not node`. Determine node's boolean + # value and negate its result, unless it is + # Uninferable, which will be returned as is. + bool_value = operand.bool_value() + if bool_value is not util.Uninferable: + yield nodes.const_factory(not bool_value) + else: + yield util.Uninferable + else: + if not isinstance(operand, (bases.Instance, nodes.ClassDef)): + # The operation was used on something which + # doesn't support it. + yield util.BadUnaryOperationMessage(operand, self.op, exc) + continue + + try: + try: + methods = dunder_lookup.lookup(operand, meth) + except exceptions.AttributeInferenceError: + yield util.BadUnaryOperationMessage(operand, self.op, exc) + continue + + meth = methods[0] + inferred = next(meth.infer(context=context)) + if inferred is util.Uninferable or not inferred.callable(): + continue + + context = contextmod.copy_context(context) + context.callcontext = contextmod.CallContext(args=[operand]) + call_results = inferred.infer_call_result(self, context=context) + result = next(call_results, None) + if result is None: + # Failed to infer, return the same type. + yield operand + else: + yield result + except exceptions.AttributeInferenceError as exc: + # The unary operation special method was not found. + yield util.BadUnaryOperationMessage(operand, self.op, exc) + except exceptions.InferenceError: + yield util.Uninferable + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def infer_unaryop(self, context=None): + """Infer what an UnaryOp should return when evaluated.""" + yield from _filter_operation_errors( + self, _infer_unaryop, context, util.BadUnaryOperationMessage + ) + return dict(node=self, context=context) + + +nodes.UnaryOp._infer_unaryop = _infer_unaryop +nodes.UnaryOp._infer = infer_unaryop + + +def _is_not_implemented(const): + """Check if the given const node is NotImplemented.""" + return isinstance(const, nodes.Const) and const.value is NotImplemented + + +def _invoke_binop_inference(instance, opnode, op, other, context, method_name): + """Invoke binary operation inference on the given instance.""" + methods = dunder_lookup.lookup(instance, method_name) + context = contextmod.bind_context_to_node(context, instance) + method = methods[0] + inferred = next(method.infer(context=context)) + if inferred is util.Uninferable: + raise exceptions.InferenceError + return instance.infer_binary_op(opnode, op, other, context, inferred) + + +def _aug_op(instance, opnode, op, other, context, reverse=False): + """Get an inference callable for an augmented binary operation.""" + method_name = protocols.AUGMENTED_OP_METHOD[op] + return functools.partial( + _invoke_binop_inference, + instance=instance, + op=op, + opnode=opnode, + other=other, + context=context, + method_name=method_name, + ) + + +def _bin_op(instance, opnode, op, other, context, reverse=False): + """Get an inference callable for a normal binary operation. + + If *reverse* is True, then the reflected method will be used instead. + """ + if reverse: + method_name = protocols.REFLECTED_BIN_OP_METHOD[op] + else: + method_name = protocols.BIN_OP_METHOD[op] + return functools.partial( + _invoke_binop_inference, + instance=instance, + op=op, + opnode=opnode, + other=other, + context=context, + method_name=method_name, + ) + + +def _get_binop_contexts(context, left, right): + """Get contexts for binary operations. + + This will return two inference contexts, the first one + for x.__op__(y), the other one for y.__rop__(x), where + only the arguments are inversed. + """ + # The order is important, since the first one should be + # left.__op__(right). + for arg in (right, left): + new_context = context.clone() + new_context.callcontext = contextmod.CallContext(args=[arg]) + new_context.boundnode = None + yield new_context + + +def _same_type(type1, type2): + """Check if type1 is the same as type2.""" + return type1.qname() == type2.qname() + + +def _get_binop_flow( + left, left_type, binary_opnode, right, right_type, context, reverse_context +): + """Get the flow for binary operations. + + The rules are a bit messy: + + * if left and right have the same type, then only one + method will be called, left.__op__(right) + * if left and right are unrelated typewise, then first + left.__op__(right) is tried and if this does not exist + or returns NotImplemented, then right.__rop__(left) is tried. + * if left is a subtype of right, then only left.__op__(right) + is tried. + * if left is a supertype of right, then right.__rop__(left) + is first tried and then left.__op__(right) + """ + op = binary_opnode.op + if _same_type(left_type, right_type): + methods = [_bin_op(left, binary_opnode, op, right, context)] + elif helpers.is_subtype(left_type, right_type): + methods = [_bin_op(left, binary_opnode, op, right, context)] + elif helpers.is_supertype(left_type, right_type): + methods = [ + _bin_op(right, binary_opnode, op, left, reverse_context, reverse=True), + _bin_op(left, binary_opnode, op, right, context), + ] + else: + methods = [ + _bin_op(left, binary_opnode, op, right, context), + _bin_op(right, binary_opnode, op, left, reverse_context, reverse=True), + ] + return methods + + +def _get_aug_flow( + left, left_type, aug_opnode, right, right_type, context, reverse_context +): + """Get the flow for augmented binary operations. + + The rules are a bit messy: + + * if left and right have the same type, then left.__augop__(right) + is first tried and then left.__op__(right). + * if left and right are unrelated typewise, then + left.__augop__(right) is tried, then left.__op__(right) + is tried and then right.__rop__(left) is tried. + * if left is a subtype of right, then left.__augop__(right) + is tried and then left.__op__(right). + * if left is a supertype of right, then left.__augop__(right) + is tried, then right.__rop__(left) and then + left.__op__(right) + """ + bin_op = aug_opnode.op.strip("=") + aug_op = aug_opnode.op + if _same_type(left_type, right_type): + methods = [ + _aug_op(left, aug_opnode, aug_op, right, context), + _bin_op(left, aug_opnode, bin_op, right, context), + ] + elif helpers.is_subtype(left_type, right_type): + methods = [ + _aug_op(left, aug_opnode, aug_op, right, context), + _bin_op(left, aug_opnode, bin_op, right, context), + ] + elif helpers.is_supertype(left_type, right_type): + methods = [ + _aug_op(left, aug_opnode, aug_op, right, context), + _bin_op(right, aug_opnode, bin_op, left, reverse_context, reverse=True), + _bin_op(left, aug_opnode, bin_op, right, context), + ] + else: + methods = [ + _aug_op(left, aug_opnode, aug_op, right, context), + _bin_op(left, aug_opnode, bin_op, right, context), + _bin_op(right, aug_opnode, bin_op, left, reverse_context, reverse=True), + ] + return methods + + +def _infer_binary_operation(left, right, binary_opnode, context, flow_factory): + """Infer a binary operation between a left operand and a right operand + + This is used by both normal binary operations and augmented binary + operations, the only difference is the flow factory used. + """ + + context, reverse_context = _get_binop_contexts(context, left, right) + left_type = helpers.object_type(left) + right_type = helpers.object_type(right) + methods = flow_factory( + left, left_type, binary_opnode, right, right_type, context, reverse_context + ) + for method in methods: + try: + results = list(method()) + except AttributeError: + continue + except exceptions.AttributeInferenceError: + continue + except exceptions.InferenceError: + yield util.Uninferable + return + else: + if any(result is util.Uninferable for result in results): + yield util.Uninferable + return + + if all(map(_is_not_implemented, results)): + continue + not_implemented = sum( + 1 for result in results if _is_not_implemented(result) + ) + if not_implemented and not_implemented != len(results): + # Can't infer yet what this is. + yield util.Uninferable + return + + yield from results + return + # The operation doesn't seem to be supported so let the caller know about it + yield util.BadBinaryOperationMessage(left_type, binary_opnode.op, right_type) + + +def _infer_binop(self, context): + """Binary operation inference logic.""" + left = self.left + right = self.right + + # we use two separate contexts for evaluating lhs and rhs because + # 1. evaluating lhs may leave some undesired entries in context.path + # which may not let us infer right value of rhs + context = context or contextmod.InferenceContext() + lhs_context = contextmod.copy_context(context) + rhs_context = contextmod.copy_context(context) + lhs_iter = left.infer(context=lhs_context) + rhs_iter = right.infer(context=rhs_context) + for lhs, rhs in itertools.product(lhs_iter, rhs_iter): + if any(value is util.Uninferable for value in (rhs, lhs)): + # Don't know how to process this. + yield util.Uninferable + return + + try: + yield from _infer_binary_operation(lhs, rhs, self, context, _get_binop_flow) + except exceptions._NonDeducibleTypeHierarchy: + yield util.Uninferable + + +@decorators.yes_if_nothing_inferred +@decorators.path_wrapper +def infer_binop(self, context=None): + return _filter_operation_errors( + self, _infer_binop, context, util.BadBinaryOperationMessage + ) + + +nodes.BinOp._infer_binop = _infer_binop +nodes.BinOp._infer = infer_binop + + +def _infer_augassign(self, context=None): + """Inference logic for augmented binary operations.""" + if context is None: + context = contextmod.InferenceContext() + + rhs_context = context.clone() + + lhs_iter = self.target.infer_lhs(context=context) + rhs_iter = self.value.infer(context=rhs_context) + for lhs, rhs in itertools.product(lhs_iter, rhs_iter): + if any(value is util.Uninferable for value in (rhs, lhs)): + # Don't know how to process this. + yield util.Uninferable + return + + try: + yield from _infer_binary_operation( + left=lhs, + right=rhs, + binary_opnode=self, + context=context, + flow_factory=_get_aug_flow, + ) + except exceptions._NonDeducibleTypeHierarchy: + yield util.Uninferable + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def infer_augassign(self, context=None): + return _filter_operation_errors( + self, _infer_augassign, context, util.BadBinaryOperationMessage + ) + + +nodes.AugAssign._infer_augassign = _infer_augassign +nodes.AugAssign._infer = infer_augassign + +# End of binary operation inference. + + +@decorators.raise_if_nothing_inferred +def infer_arguments(self, context=None): + name = context.lookupname + if name is None: + raise exceptions.InferenceError(node=self, context=context) + return protocols._arguments_infer_argname(self, name, context) + + +nodes.Arguments._infer = infer_arguments + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def infer_assign(self, context=None): + """infer a AssignName/AssignAttr: need to inspect the RHS part of the + assign node + """ + stmt = self.statement() + if isinstance(stmt, nodes.AugAssign): + return stmt.infer(context) + + stmts = list(self.assigned_stmts(context=context)) + return bases._infer_stmts(stmts, context) + + +nodes.AssignName._infer = infer_assign +nodes.AssignAttr._infer = infer_assign + + +@decorators.raise_if_nothing_inferred +@decorators.path_wrapper +def infer_empty_node(self, context=None): + if not self.has_underlying_object(): + yield util.Uninferable + else: + try: + yield from MANAGER.infer_ast_from_something(self.object, context=context) + except exceptions.AstroidError: + yield util.Uninferable + + +nodes.EmptyNode._infer = infer_empty_node + + +@decorators.raise_if_nothing_inferred +def infer_index(self, context=None): + return self.value.infer(context) + + +nodes.Index._infer = infer_index + +# TODO: move directly into bases.Instance when the dependency hell +# will be solved. +def instance_getitem(self, index, context=None): + # Rewrap index to Const for this case + new_context = contextmod.bind_context_to_node(context, self) + if not context: + context = new_context + + # Create a new callcontext for providing index as an argument. + new_context.callcontext = contextmod.CallContext(args=[index]) + + method = next(self.igetattr("__getitem__", context=context), None) + if not isinstance(method, bases.BoundMethod): + raise exceptions.InferenceError( + "Could not find __getitem__ for {node!r}.", node=self, context=context + ) + + return next(method.infer_call_result(self, new_context)) + + +bases.Instance.getitem = instance_getitem + + +def _populate_context_lookup(call, context): + # Allows context to be saved for later + # for inference inside a function + context_lookup = {} + if context is None: + return context_lookup + for arg in call.args: + if isinstance(arg, nodes.Starred): + context_lookup[arg.value] = context + else: + context_lookup[arg] = context + keywords = call.keywords if call.keywords is not None else [] + for keyword in keywords: + context_lookup[keyword.value] = context + return context_lookup + + +@decorators.raise_if_nothing_inferred +def infer_ifexp(self, context=None): + """Support IfExp inference + + If we can't infer the truthiness of the condition, we default + to inferring both branches. Otherwise, we infer either branch + depending on the condition. + """ + both_branches = False + # We use two separate contexts for evaluating lhs and rhs because + # evaluating lhs may leave some undesired entries in context.path + # which may not let us infer right value of rhs. + + context = context or contextmod.InferenceContext() + lhs_context = contextmod.copy_context(context) + rhs_context = contextmod.copy_context(context) + try: + test = next(self.test.infer(context=context.clone())) + except exceptions.InferenceError: + both_branches = True + else: + if test is not util.Uninferable: + if test.bool_value(): + yield from self.body.infer(context=lhs_context) + else: + yield from self.orelse.infer(context=rhs_context) + else: + both_branches = True + if both_branches: + yield from self.body.infer(context=lhs_context) + yield from self.orelse.infer(context=rhs_context) + + +nodes.IfExp._infer = infer_ifexp diff --git a/venv/Lib/site-packages/astroid/interpreter/__init__.py 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b/venv/Lib/site-packages/astroid/interpreter/_import/__pycache__/spec.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/astroid/interpreter/_import/__pycache__/util.cpython-37.pyc b/venv/Lib/site-packages/astroid/interpreter/_import/__pycache__/util.cpython-37.pyc new file mode 100644 index 0000000..2a7fdbb Binary files /dev/null and b/venv/Lib/site-packages/astroid/interpreter/_import/__pycache__/util.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/astroid/interpreter/_import/spec.py b/venv/Lib/site-packages/astroid/interpreter/_import/spec.py new file mode 100644 index 0000000..84e093b --- /dev/null +++ b/venv/Lib/site-packages/astroid/interpreter/_import/spec.py @@ -0,0 +1,344 @@ +# Copyright (c) 2016-2018 Claudiu Popa +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2017 Chris Philip +# Copyright (c) 2017 Hugo +# Copyright (c) 2017 ioanatia +# Copyright (c) 2017 Calen Pennington +# Copyright (c) 2018 Nick Drozd + +import abc +import collections +import distutils +import enum +import imp +import os +import sys +import zipimport + +try: + import importlib.machinery + + _HAS_MACHINERY = True +except ImportError: + _HAS_MACHINERY = False + +try: + from functools import lru_cache +except ImportError: + from backports.functools_lru_cache import lru_cache + +from . import util + +ModuleType = enum.Enum( + "ModuleType", + "C_BUILTIN C_EXTENSION PKG_DIRECTORY " + "PY_CODERESOURCE PY_COMPILED PY_FROZEN PY_RESOURCE " + "PY_SOURCE PY_ZIPMODULE PY_NAMESPACE", +) +_ImpTypes = { + imp.C_BUILTIN: ModuleType.C_BUILTIN, + imp.C_EXTENSION: ModuleType.C_EXTENSION, + imp.PKG_DIRECTORY: ModuleType.PKG_DIRECTORY, + imp.PY_COMPILED: ModuleType.PY_COMPILED, + imp.PY_FROZEN: ModuleType.PY_FROZEN, + imp.PY_SOURCE: ModuleType.PY_SOURCE, +} +if hasattr(imp, "PY_RESOURCE"): + _ImpTypes[imp.PY_RESOURCE] = ModuleType.PY_RESOURCE +if hasattr(imp, "PY_CODERESOURCE"): + _ImpTypes[imp.PY_CODERESOURCE] = ModuleType.PY_CODERESOURCE + + +def _imp_type_to_module_type(imp_type): + return _ImpTypes[imp_type] + + +_ModuleSpec = collections.namedtuple( + "_ModuleSpec", "name type location " "origin submodule_search_locations" +) + + +class ModuleSpec(_ModuleSpec): + """Defines a class similar to PEP 420's ModuleSpec + + A module spec defines a name of a module, its type, location + and where submodules can be found, if the module is a package. + """ + + def __new__( + cls, + name, + module_type, + location=None, + origin=None, + submodule_search_locations=None, + ): + return _ModuleSpec.__new__( + cls, + name=name, + type=module_type, + location=location, + origin=origin, + submodule_search_locations=submodule_search_locations, + ) + + +class Finder: + """A finder is a class which knows how to find a particular module.""" + + def __init__(self, path=None): + self._path = path or sys.path + + @abc.abstractmethod + def find_module(self, modname, module_parts, processed, submodule_path): + """Find the given module + + Each finder is responsible for each protocol of finding, as long as + they all return a ModuleSpec. + + :param str modname: The module which needs to be searched. + :param list module_parts: It should be a list of strings, + where each part contributes to the module's + namespace. + :param list processed: What parts from the module parts were processed + so far. + :param list submodule_path: A list of paths where the module + can be looked into. + :returns: A ModuleSpec, describing how and where the module was found, + None, otherwise. + """ + + def contribute_to_path(self, spec, processed): + """Get a list of extra paths where this finder can search.""" + + +class ImpFinder(Finder): + """A finder based on the imp module.""" + + def find_module(self, modname, module_parts, processed, submodule_path): + if submodule_path is not None: + submodule_path = list(submodule_path) + try: + stream, mp_filename, mp_desc = imp.find_module(modname, submodule_path) + except ImportError: + return None + + # Close resources. + if stream: + stream.close() + + return ModuleSpec( + name=modname, + location=mp_filename, + module_type=_imp_type_to_module_type(mp_desc[2]), + ) + + def contribute_to_path(self, spec, processed): + if spec.location is None: + # Builtin. + return None + + if _is_setuptools_namespace(spec.location): + # extend_path is called, search sys.path for module/packages + # of this name see pkgutil.extend_path documentation + path = [ + os.path.join(p, *processed) + for p in sys.path + if os.path.isdir(os.path.join(p, *processed)) + ] + # We already import distutils elsewhere in astroid, + # so if it is the same module, we can use it directly. + elif spec.name == "distutils" and spec.location in distutils.__path__: + # distutils is patched inside virtualenvs to pick up submodules + # from the original Python, not from the virtualenv itself. + path = list(distutils.__path__) + else: + path = [spec.location] + return path + + +class ExplicitNamespacePackageFinder(ImpFinder): + """A finder for the explicit namespace packages, generated through pkg_resources.""" + + def find_module(self, modname, module_parts, processed, submodule_path): + if processed: + modname = ".".join(processed + [modname]) + if util.is_namespace(modname) and modname in sys.modules: + submodule_path = sys.modules[modname].__path__ + return ModuleSpec( + name=modname, + location="", + origin="namespace", + module_type=ModuleType.PY_NAMESPACE, + submodule_search_locations=submodule_path, + ) + return None + + def contribute_to_path(self, spec, processed): + return spec.submodule_search_locations + + +class ZipFinder(Finder): + """Finder that knows how to find a module inside zip files.""" + + def __init__(self, path): + super(ZipFinder, self).__init__(path) + self._zipimporters = _precache_zipimporters(path) + + def find_module(self, modname, module_parts, processed, submodule_path): + try: + file_type, filename, path = _search_zip(module_parts, self._zipimporters) + except ImportError: + return None + + return ModuleSpec( + name=modname, + location=filename, + origin="egg", + module_type=file_type, + submodule_search_locations=path, + ) + + +class PathSpecFinder(Finder): + """Finder based on importlib.machinery.PathFinder.""" + + def find_module(self, modname, module_parts, processed, submodule_path): + spec = importlib.machinery.PathFinder.find_spec(modname, path=submodule_path) + if spec: + # origin can be either a string on older Python versions + # or None in case it is a namespace package: + # https://github.com/python/cpython/pull/5481 + is_namespace_pkg = spec.origin in ("namespace", None) + location = spec.origin if not is_namespace_pkg else None + module_type = ModuleType.PY_NAMESPACE if is_namespace_pkg else None + spec = ModuleSpec( + name=spec.name, + location=location, + origin=spec.origin, + module_type=module_type, + submodule_search_locations=list(spec.submodule_search_locations or []), + ) + return spec + + def contribute_to_path(self, spec, processed): + if spec.type == ModuleType.PY_NAMESPACE: + return spec.submodule_search_locations + return None + + +_SPEC_FINDERS = (ImpFinder, ZipFinder) +if _HAS_MACHINERY: + _SPEC_FINDERS += (PathSpecFinder,) +_SPEC_FINDERS += (ExplicitNamespacePackageFinder,) + + +def _is_setuptools_namespace(location): + try: + with open(os.path.join(location, "__init__.py"), "rb") as stream: + data = stream.read(4096) + except IOError: + pass + else: + extend_path = b"pkgutil" in data and b"extend_path" in data + declare_namespace = ( + b"pkg_resources" in data and b"declare_namespace(__name__)" in data + ) + return extend_path or declare_namespace + + +@lru_cache() +def _cached_set_diff(left, right): + result = set(left) + result.difference_update(right) + return result + + +def _precache_zipimporters(path=None): + pic = sys.path_importer_cache + + # When measured, despite having the same complexity (O(n)), + # converting to tuples and then caching the conversion to sets + # and the set difference is faster than converting to sets + # and then only caching the set difference. + + req_paths = tuple(path or sys.path) + cached_paths = tuple(pic) + new_paths = _cached_set_diff(req_paths, cached_paths) + for entry_path in new_paths: + try: + pic[entry_path] = zipimport.zipimporter(entry_path) + except zipimport.ZipImportError: + continue + return pic + + +def _search_zip(modpath, pic): + for filepath, importer in list(pic.items()): + if importer is not None: + found = importer.find_module(modpath[0]) + if found: + if not importer.find_module(os.path.sep.join(modpath)): + raise ImportError( + "No module named %s in %s/%s" + % (".".join(modpath[1:]), filepath, modpath) + ) + # import code; code.interact(local=locals()) + return ( + ModuleType.PY_ZIPMODULE, + os.path.abspath(filepath) + os.path.sep + os.path.sep.join(modpath), + filepath, + ) + raise ImportError("No module named %s" % ".".join(modpath)) + + +def _find_spec_with_path(search_path, modname, module_parts, processed, submodule_path): + finders = [finder(search_path) for finder in _SPEC_FINDERS] + for finder in finders: + spec = finder.find_module(modname, module_parts, processed, submodule_path) + if spec is None: + continue + return finder, spec + + raise ImportError("No module named %s" % ".".join(module_parts)) + + +def find_spec(modpath, path=None): + """Find a spec for the given module. + + :type modpath: list or tuple + :param modpath: + split module's name (i.e name of a module or package split + on '.'), with leading empty strings for explicit relative import + + :type path: list or None + :param path: + optional list of path where the module or package should be + searched (use sys.path if nothing or None is given) + + :rtype: ModuleSpec + :return: A module spec, which describes how the module was + found and where. + """ + _path = path or sys.path + + # Need a copy for not mutating the argument. + modpath = modpath[:] + + submodule_path = None + module_parts = modpath[:] + processed = [] + + while modpath: + modname = modpath.pop(0) + finder, spec = _find_spec_with_path( + _path, modname, module_parts, processed, submodule_path or path + ) + processed.append(modname) + if modpath: + submodule_path = finder.contribute_to_path(spec, processed) + + if spec.type == ModuleType.PKG_DIRECTORY: + spec = spec._replace(submodule_search_locations=submodule_path) + + return spec diff --git a/venv/Lib/site-packages/astroid/interpreter/_import/util.py b/venv/Lib/site-packages/astroid/interpreter/_import/util.py new file mode 100644 index 0000000..a917bd3 --- /dev/null +++ b/venv/Lib/site-packages/astroid/interpreter/_import/util.py @@ -0,0 +1,10 @@ +# Copyright (c) 2016, 2018 Claudiu Popa + +try: + import pkg_resources +except ImportError: + pkg_resources = None + + +def is_namespace(modname): + return pkg_resources is not None and modname in pkg_resources._namespace_packages diff --git a/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py b/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py new file mode 100644 index 0000000..0ae9bc9 --- /dev/null +++ b/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py @@ -0,0 +1,66 @@ +# Copyright (c) 2016-2018 Claudiu Popa +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Contains logic for retrieving special methods. + +This implementation does not rely on the dot attribute access +logic, found in ``.getattr()``. The difference between these two +is that the dunder methods are looked with the type slots +(you can find more about these here +http://lucumr.pocoo.org/2014/8/16/the-python-i-would-like-to-see/) +As such, the lookup for the special methods is actually simpler than +the dot attribute access. +""" +import itertools + +import astroid +from astroid import exceptions + + +def _lookup_in_mro(node, name): + attrs = node.locals.get(name, []) + + nodes = itertools.chain.from_iterable( + ancestor.locals.get(name, []) for ancestor in node.ancestors(recurs=True) + ) + values = list(itertools.chain(attrs, nodes)) + if not values: + raise exceptions.AttributeInferenceError(attribute=name, target=node) + + return values + + +def lookup(node, name): + """Lookup the given special method name in the given *node* + + If the special method was found, then a list of attributes + will be returned. Otherwise, `astroid.AttributeInferenceError` + is going to be raised. + """ + if isinstance( + node, (astroid.List, astroid.Tuple, astroid.Const, astroid.Dict, astroid.Set) + ): + return _builtin_lookup(node, name) + if isinstance(node, astroid.Instance): + return _lookup_in_mro(node, name) + if isinstance(node, astroid.ClassDef): + return _class_lookup(node, name) + + raise exceptions.AttributeInferenceError(attribute=name, target=node) + + +def _class_lookup(node, name): + metaclass = node.metaclass() + if metaclass is None: + raise exceptions.AttributeInferenceError(attribute=name, target=node) + + return _lookup_in_mro(metaclass, name) + + +def _builtin_lookup(node, name): + values = node.locals.get(name, []) + if not values: + raise exceptions.AttributeInferenceError(attribute=name, target=node) + + return values diff --git a/venv/Lib/site-packages/astroid/interpreter/objectmodel.py b/venv/Lib/site-packages/astroid/interpreter/objectmodel.py new file mode 100644 index 0000000..5e488d9 --- /dev/null +++ b/venv/Lib/site-packages/astroid/interpreter/objectmodel.py @@ -0,0 +1,738 @@ +# Copyright (c) 2016-2018 Claudiu Popa +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2017-2018 Bryce Guinta +# Copyright (c) 2017 Ceridwen +# Copyright (c) 2017 Calen Pennington +# Copyright (c) 2018 Nick Drozd +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER +""" +Data object model, as per https://docs.python.org/3/reference/datamodel.html. + +This module describes, at least partially, a data object model for some +of astroid's nodes. The model contains special attributes that nodes such +as functions, classes, modules etc have, such as __doc__, __class__, +__module__ etc, being used when doing attribute lookups over nodes. + +For instance, inferring `obj.__class__` will first trigger an inference +of the `obj` variable. If it was successfully inferred, then an attribute +`__class__ will be looked for in the inferred object. This is the part +where the data model occurs. The model is attached to those nodes +and the lookup mechanism will try to see if attributes such as +`__class__` are defined by the model or not. If they are defined, +the model will be requested to return the corresponding value of that +attribute. Thus the model can be viewed as a special part of the lookup +mechanism. +""" + +import itertools +import pprint +import os +import types +from functools import lru_cache + +import astroid +from astroid import context as contextmod +from astroid import exceptions +from astroid import node_classes + + +IMPL_PREFIX = "attr_" + + +def _dunder_dict(instance, attributes): + obj = node_classes.Dict(parent=instance) + + # Convert the keys to node strings + keys = [ + node_classes.Const(value=value, parent=obj) for value in list(attributes.keys()) + ] + + # The original attribute has a list of elements for each key, + # but that is not useful for retrieving the special attribute's value. + # In this case, we're picking the last value from each list. + values = [elem[-1] for elem in attributes.values()] + + obj.postinit(list(zip(keys, values))) + return obj + + +class ObjectModel: + def __init__(self): + self._instance = None + + def __repr__(self): + result = [] + cname = type(self).__name__ + string = "%(cname)s(%(fields)s)" + alignment = len(cname) + 1 + for field in sorted(self.attributes()): + width = 80 - len(field) - alignment + lines = pprint.pformat(field, indent=2, width=width).splitlines(True) + + inner = [lines[0]] + for line in lines[1:]: + inner.append(" " * alignment + line) + result.append(field) + + return string % { + "cname": cname, + "fields": (",\n" + " " * alignment).join(result), + } + + def __call__(self, instance): + self._instance = instance + return self + + def __get__(self, instance, cls=None): + # ObjectModel needs to be a descriptor so that just doing + # `special_attributes = SomeObjectModel` should be enough in the body of a node. + # But at the same time, node.special_attributes should return an object + # which can be used for manipulating the special attributes. That's the reason + # we pass the instance through which it got accessed to ObjectModel.__call__, + # returning itself afterwards, so we can still have access to the + # underlying data model and to the instance for which it got accessed. + return self(instance) + + def __contains__(self, name): + return name in self.attributes() + + @lru_cache(maxsize=None) + def attributes(self): + """Get the attributes which are exported by this object model.""" + return [ + obj[len(IMPL_PREFIX) :] for obj in dir(self) if obj.startswith(IMPL_PREFIX) + ] + + def lookup(self, name): + """Look up the given *name* in the current model + + It should return an AST or an interpreter object, + but if the name is not found, then an AttributeInferenceError will be raised. + """ + + if name in self.attributes(): + return getattr(self, IMPL_PREFIX + name) + raise exceptions.AttributeInferenceError(target=self._instance, attribute=name) + + +class ModuleModel(ObjectModel): + def _builtins(self): + builtins_ast_module = astroid.MANAGER.builtins_module + return builtins_ast_module.special_attributes.lookup("__dict__") + + @property + def attr_builtins(self): + return self._builtins() + + @property + def attr___path__(self): + if not self._instance.package: + raise exceptions.AttributeInferenceError( + target=self._instance, attribute="__path__" + ) + + path_objs = [ + node_classes.Const( + value=path + if not path.endswith("__init__.py") + else os.path.dirname(path), + parent=self._instance, + ) + for path in self._instance.path + ] + + container = node_classes.List(parent=self._instance) + container.postinit(path_objs) + + return container + + @property + def attr___name__(self): + return node_classes.Const(value=self._instance.name, parent=self._instance) + + @property + def attr___doc__(self): + return node_classes.Const(value=self._instance.doc, parent=self._instance) + + @property + def attr___file__(self): + return node_classes.Const(value=self._instance.file, parent=self._instance) + + @property + def attr___dict__(self): + return _dunder_dict(self._instance, self._instance.globals) + + @property + def attr___package__(self): + if not self._instance.package: + value = "" + else: + value = self._instance.name + + return node_classes.Const(value=value, parent=self._instance) + + # These are related to the Python 3 implementation of the + # import system, + # https://docs.python.org/3/reference/import.html#import-related-module-attributes + + @property + def attr___spec__(self): + # No handling for now. + return node_classes.Unknown() + + @property + def attr___loader__(self): + # No handling for now. + return node_classes.Unknown() + + @property + def attr___cached__(self): + # No handling for now. + return node_classes.Unknown() + + +class FunctionModel(ObjectModel): + @property + def attr___name__(self): + return node_classes.Const(value=self._instance.name, parent=self._instance) + + @property + def attr___doc__(self): + return node_classes.Const(value=self._instance.doc, parent=self._instance) + + @property + def attr___qualname__(self): + return node_classes.Const(value=self._instance.qname(), parent=self._instance) + + @property + def attr___defaults__(self): + func = self._instance + if not func.args.defaults: + return node_classes.Const(value=None, parent=func) + + defaults_obj = node_classes.Tuple(parent=func) + defaults_obj.postinit(func.args.defaults) + return defaults_obj + + @property + def attr___annotations__(self): + obj = node_classes.Dict(parent=self._instance) + + if not self._instance.returns: + returns = None + else: + returns = self._instance.returns + + args = self._instance.args + pair_annotations = itertools.chain( + zip(args.args or [], args.annotations), + zip(args.kwonlyargs, args.kwonlyargs_annotations), + zip(args.posonlyargs or [], args.posonlyargs_annotations), + ) + + annotations = { + arg.name: annotation for (arg, annotation) in pair_annotations if annotation + } + if args.varargannotation: + annotations[args.vararg] = args.varargannotation + if args.kwargannotation: + annotations[args.kwarg] = args.kwargannotation + if returns: + annotations["return"] = returns + + items = [ + (node_classes.Const(key, parent=obj), value) + for (key, value) in annotations.items() + ] + + obj.postinit(items) + return obj + + @property + def attr___dict__(self): + return node_classes.Dict(parent=self._instance) + + attr___globals__ = attr___dict__ + + @property + def attr___kwdefaults__(self): + def _default_args(args, parent): + for arg in args.kwonlyargs: + try: + default = args.default_value(arg.name) + except exceptions.NoDefault: + continue + + name = node_classes.Const(arg.name, parent=parent) + yield name, default + + args = self._instance.args + obj = node_classes.Dict(parent=self._instance) + defaults = dict(_default_args(args, obj)) + + obj.postinit(list(defaults.items())) + return obj + + @property + def attr___module__(self): + return node_classes.Const(self._instance.root().qname()) + + @property + def attr___get__(self): + # pylint: disable=import-outside-toplevel; circular import + from astroid import bases + + func = self._instance + + class DescriptorBoundMethod(bases.BoundMethod): + """Bound method which knows how to understand calling descriptor binding.""" + + def implicit_parameters(self): + # Different than BoundMethod since the signature + # is different. + return 0 + + def infer_call_result(self, caller, context=None): + if len(caller.args) > 2 or len(caller.args) < 1: + raise exceptions.InferenceError( + "Invalid arguments for descriptor binding", + target=self, + context=context, + ) + + context = contextmod.copy_context(context) + cls = next(caller.args[0].infer(context=context)) + + if cls is astroid.Uninferable: + raise exceptions.InferenceError( + "Invalid class inferred", target=self, context=context + ) + + # For some reason func is a Node that the below + # code is not expecting + if isinstance(func, bases.BoundMethod): + yield func + return + + # Rebuild the original value, but with the parent set as the + # class where it will be bound. + new_func = func.__class__( + name=func.name, + doc=func.doc, + lineno=func.lineno, + col_offset=func.col_offset, + parent=cls, + ) + # pylint: disable=no-member + new_func.postinit(func.args, func.body, func.decorators, func.returns) + + # Build a proper bound method that points to our newly built function. + proxy = bases.UnboundMethod(new_func) + yield bases.BoundMethod(proxy=proxy, bound=cls) + + @property + def args(self): + """Overwrite the underlying args to match those of the underlying func + + Usually the underlying *func* is a function/method, as in: + + def test(self): + pass + + This has only the *self* parameter but when we access test.__get__ + we get a new object which has two parameters, *self* and *type*. + """ + nonlocal func + positional_or_keyword_params = func.args.args.copy() + positional_or_keyword_params.append(astroid.AssignName(name="type")) + + positional_only_params = func.args.posonlyargs.copy() + + arguments = astroid.Arguments(parent=func.args.parent) + arguments.postinit( + args=positional_or_keyword_params, + posonlyargs=positional_only_params, + defaults=[], + kwonlyargs=[], + kw_defaults=[], + annotations=[], + ) + return arguments + + return DescriptorBoundMethod(proxy=self._instance, bound=self._instance) + + # These are here just for completion. + @property + def attr___ne__(self): + return node_classes.Unknown() + + attr___subclasshook__ = attr___ne__ + attr___str__ = attr___ne__ + attr___sizeof__ = attr___ne__ + attr___setattr___ = attr___ne__ + attr___repr__ = attr___ne__ + attr___reduce__ = attr___ne__ + attr___reduce_ex__ = attr___ne__ + attr___new__ = attr___ne__ + attr___lt__ = attr___ne__ + attr___eq__ = attr___ne__ + attr___gt__ = attr___ne__ + attr___format__ = attr___ne__ + attr___delattr___ = attr___ne__ + attr___getattribute__ = attr___ne__ + attr___hash__ = attr___ne__ + attr___init__ = attr___ne__ + attr___dir__ = attr___ne__ + attr___call__ = attr___ne__ + attr___class__ = attr___ne__ + attr___closure__ = attr___ne__ + attr___code__ = attr___ne__ + + +class ClassModel(ObjectModel): + @property + def attr___module__(self): + return node_classes.Const(self._instance.root().qname()) + + @property + def attr___name__(self): + return node_classes.Const(self._instance.name) + + @property + def attr___qualname__(self): + return node_classes.Const(self._instance.qname()) + + @property + def attr___doc__(self): + return node_classes.Const(self._instance.doc) + + @property + def attr___mro__(self): + if not self._instance.newstyle: + raise exceptions.AttributeInferenceError( + target=self._instance, attribute="__mro__" + ) + + mro = self._instance.mro() + obj = node_classes.Tuple(parent=self._instance) + obj.postinit(mro) + return obj + + @property + def attr_mro(self): + if not self._instance.newstyle: + raise exceptions.AttributeInferenceError( + target=self._instance, attribute="mro" + ) + + # pylint: disable=import-outside-toplevel; circular import + from astroid import bases + + other_self = self + + # Cls.mro is a method and we need to return one in order to have a proper inference. + # The method we're returning is capable of inferring the underlying MRO though. + class MroBoundMethod(bases.BoundMethod): + def infer_call_result(self, caller, context=None): + yield other_self.attr___mro__ + + implicit_metaclass = self._instance.implicit_metaclass() + mro_method = implicit_metaclass.locals["mro"][0] + return MroBoundMethod(proxy=mro_method, bound=implicit_metaclass) + + @property + def attr___bases__(self): + obj = node_classes.Tuple() + context = contextmod.InferenceContext() + elts = list(self._instance._inferred_bases(context)) + obj.postinit(elts=elts) + return obj + + @property + def attr___class__(self): + # pylint: disable=import-outside-toplevel; circular import + from astroid import helpers + + return helpers.object_type(self._instance) + + @property + def attr___subclasses__(self): + """Get the subclasses of the underlying class + + This looks only in the current module for retrieving the subclasses, + thus it might miss a couple of them. + """ + # pylint: disable=import-outside-toplevel; circular import + from astroid import bases + from astroid import scoped_nodes + + if not self._instance.newstyle: + raise exceptions.AttributeInferenceError( + target=self._instance, attribute="__subclasses__" + ) + + qname = self._instance.qname() + root = self._instance.root() + classes = [ + cls + for cls in root.nodes_of_class(scoped_nodes.ClassDef) + if cls != self._instance and cls.is_subtype_of(qname) + ] + + obj = node_classes.List(parent=self._instance) + obj.postinit(classes) + + class SubclassesBoundMethod(bases.BoundMethod): + def infer_call_result(self, caller, context=None): + yield obj + + implicit_metaclass = self._instance.implicit_metaclass() + subclasses_method = implicit_metaclass.locals["__subclasses__"][0] + return SubclassesBoundMethod(proxy=subclasses_method, bound=implicit_metaclass) + + @property + def attr___dict__(self): + return node_classes.Dict(parent=self._instance) + + +class SuperModel(ObjectModel): + @property + def attr___thisclass__(self): + return self._instance.mro_pointer + + @property + def attr___self_class__(self): + return self._instance._self_class + + @property + def attr___self__(self): + return self._instance.type + + @property + def attr___class__(self): + return self._instance._proxied + + +class UnboundMethodModel(ObjectModel): + @property + def attr___class__(self): + # pylint: disable=import-outside-toplevel; circular import + from astroid import helpers + + return helpers.object_type(self._instance) + + @property + def attr___func__(self): + return self._instance._proxied + + @property + def attr___self__(self): + return node_classes.Const(value=None, parent=self._instance) + + attr_im_func = attr___func__ + attr_im_class = attr___class__ + attr_im_self = attr___self__ + + +class BoundMethodModel(FunctionModel): + @property + def attr___func__(self): + return self._instance._proxied._proxied + + @property + def attr___self__(self): + return self._instance.bound + + +class GeneratorModel(FunctionModel): + def __new__(cls, *args, **kwargs): + # Append the values from the GeneratorType unto this object. + ret = super(GeneratorModel, cls).__new__(cls, *args, **kwargs) + generator = astroid.MANAGER.builtins_module["generator"] + for name, values in generator.locals.items(): + method = values[0] + patched = lambda cls, meth=method: meth + + setattr(type(ret), IMPL_PREFIX + name, property(patched)) + + return ret + + @property + def attr___name__(self): + return node_classes.Const( + value=self._instance.parent.name, parent=self._instance + ) + + @property + def attr___doc__(self): + return node_classes.Const( + value=self._instance.parent.doc, parent=self._instance + ) + + +class AsyncGeneratorModel(GeneratorModel): + def __new__(cls, *args, **kwargs): + # Append the values from the AGeneratorType unto this object. + ret = super().__new__(cls, *args, **kwargs) + astroid_builtins = astroid.MANAGER.builtins_module + generator = astroid_builtins.get("async_generator") + if generator is None: + # Make it backward compatible. + generator = astroid_builtins.get("generator") + + for name, values in generator.locals.items(): + method = values[0] + patched = lambda cls, meth=method: meth + + setattr(type(ret), IMPL_PREFIX + name, property(patched)) + + return ret + + +class InstanceModel(ObjectModel): + @property + def attr___class__(self): + return self._instance._proxied + + @property + def attr___module__(self): + return node_classes.Const(self._instance.root().qname()) + + @property + def attr___doc__(self): + return node_classes.Const(self._instance.doc) + + @property + def attr___dict__(self): + return _dunder_dict(self._instance, self._instance.instance_attrs) + + +# Exception instances + + +class ExceptionInstanceModel(InstanceModel): + @property + def attr_args(self): + message = node_classes.Const("") + args = node_classes.Tuple(parent=self._instance) + args.postinit((message,)) + return args + + @property + def attr___traceback__(self): + builtins_ast_module = astroid.MANAGER.builtins_module + traceback_type = builtins_ast_module[types.TracebackType.__name__] + return traceback_type.instantiate_class() + + +class SyntaxErrorInstanceModel(ExceptionInstanceModel): + @property + def attr_text(self): + return node_classes.Const("") + + +class OSErrorInstanceModel(ExceptionInstanceModel): + @property + def attr_filename(self): + return node_classes.Const("") + + @property + def attr_errno(self): + return node_classes.Const(0) + + @property + def attr_strerror(self): + return node_classes.Const("") + + attr_filename2 = attr_filename + + +class ImportErrorInstanceModel(ExceptionInstanceModel): + @property + def attr_name(self): + return node_classes.Const("") + + @property + def attr_path(self): + return node_classes.Const("") + + +BUILTIN_EXCEPTIONS = { + "builtins.SyntaxError": SyntaxErrorInstanceModel, + "builtins.ImportError": ImportErrorInstanceModel, + # These are all similar to OSError in terms of attributes + "builtins.OSError": OSErrorInstanceModel, + "builtins.BlockingIOError": OSErrorInstanceModel, + "builtins.BrokenPipeError": OSErrorInstanceModel, + "builtins.ChildProcessError": OSErrorInstanceModel, + "builtins.ConnectionAbortedError": OSErrorInstanceModel, + "builtins.ConnectionError": OSErrorInstanceModel, + "builtins.ConnectionRefusedError": OSErrorInstanceModel, + "builtins.ConnectionResetError": OSErrorInstanceModel, + "builtins.FileExistsError": OSErrorInstanceModel, + "builtins.FileNotFoundError": OSErrorInstanceModel, + "builtins.InterruptedError": OSErrorInstanceModel, + "builtins.IsADirectoryError": OSErrorInstanceModel, + "builtins.NotADirectoryError": OSErrorInstanceModel, + "builtins.PermissionError": OSErrorInstanceModel, + "builtins.ProcessLookupError": OSErrorInstanceModel, + "builtins.TimeoutError": OSErrorInstanceModel, +} + + +class DictModel(ObjectModel): + @property + def attr___class__(self): + return self._instance._proxied + + def _generic_dict_attribute(self, obj, name): + """Generate a bound method that can infer the given *obj*.""" + + class DictMethodBoundMethod(astroid.BoundMethod): + def infer_call_result(self, caller, context=None): + yield obj + + meth = next(self._instance._proxied.igetattr(name)) + return DictMethodBoundMethod(proxy=meth, bound=self._instance) + + @property + def attr_items(self): + elems = [] + obj = node_classes.List(parent=self._instance) + for key, value in self._instance.items: + elem = node_classes.Tuple(parent=obj) + elem.postinit((key, value)) + elems.append(elem) + obj.postinit(elts=elems) + + # pylint: disable=import-outside-toplevel; circular import + from astroid import objects + + obj = objects.DictItems(obj) + return self._generic_dict_attribute(obj, "items") + + @property + def attr_keys(self): + keys = [key for (key, _) in self._instance.items] + obj = node_classes.List(parent=self._instance) + obj.postinit(elts=keys) + + # pylint: disable=import-outside-toplevel; circular import + from astroid import objects + + obj = objects.DictKeys(obj) + return self._generic_dict_attribute(obj, "keys") + + @property + def attr_values(self): + + values = [value for (_, value) in self._instance.items] + obj = node_classes.List(parent=self._instance) + obj.postinit(values) + + # pylint: disable=import-outside-toplevel; circular import + from astroid import objects + + obj = objects.DictValues(obj) + return self._generic_dict_attribute(obj, "values") diff --git a/venv/Lib/site-packages/astroid/manager.py b/venv/Lib/site-packages/astroid/manager.py new file mode 100644 index 0000000..e5fd0d6 --- /dev/null +++ b/venv/Lib/site-packages/astroid/manager.py @@ -0,0 +1,337 @@ +# Copyright (c) 2006-2011, 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 BioGeek +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2017 Iva Miholic +# Copyright (c) 2018 Bryce Guinta +# Copyright (c) 2018 Nick Drozd + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""astroid manager: avoid multiple astroid build of a same module when +possible by providing a class responsible to get astroid representation +from various source and using a cache of built modules) +""" + +import os +import zipimport + +from astroid import exceptions +from astroid.interpreter._import import spec +from astroid import modutils +from astroid import transforms + + +ZIP_IMPORT_EXTS = (".zip", ".egg", ".whl") + + +def safe_repr(obj): + try: + return repr(obj) + except Exception: # pylint: disable=broad-except + return "???" + + +class AstroidManager: + """the astroid manager, responsible to build astroid from files + or modules. + + Use the Borg pattern. + """ + + name = "astroid loader" + brain = {} + + def __init__(self): + self.__dict__ = AstroidManager.brain + if not self.__dict__: + # NOTE: cache entries are added by the [re]builder + self.astroid_cache = {} + self._mod_file_cache = {} + self._failed_import_hooks = [] + self.always_load_extensions = False + self.optimize_ast = False + self.extension_package_whitelist = set() + self._transform = transforms.TransformVisitor() + + # Export these APIs for convenience + self.register_transform = self._transform.register_transform + self.unregister_transform = self._transform.unregister_transform + self.max_inferable_values = 100 + + @property + def builtins_module(self): + return self.astroid_cache["builtins"] + + def visit_transforms(self, node): + """Visit the transforms and apply them to the given *node*.""" + return self._transform.visit(node) + + def ast_from_file(self, filepath, modname=None, fallback=True, source=False): + """given a module name, return the astroid object""" + try: + filepath = modutils.get_source_file(filepath, include_no_ext=True) + source = True + except modutils.NoSourceFile: + pass + if modname is None: + try: + modname = ".".join(modutils.modpath_from_file(filepath)) + except ImportError: + modname = filepath + if ( + modname in self.astroid_cache + and self.astroid_cache[modname].file == filepath + ): + return self.astroid_cache[modname] + if source: + # pylint: disable=import-outside-toplevel; circular import + from astroid.builder import AstroidBuilder + + return AstroidBuilder(self).file_build(filepath, modname) + if fallback and modname: + return self.ast_from_module_name(modname) + raise exceptions.AstroidBuildingError( + "Unable to build an AST for {path}.", path=filepath + ) + + def _build_stub_module(self, modname): + # pylint: disable=import-outside-toplevel; circular import + from astroid.builder import AstroidBuilder + + return AstroidBuilder(self).string_build("", modname) + + def _build_namespace_module(self, modname, path): + # pylint: disable=import-outside-toplevel; circular import + from astroid.builder import build_namespace_package_module + + return build_namespace_package_module(modname, path) + + def _can_load_extension(self, modname): + if self.always_load_extensions: + return True + if modutils.is_standard_module(modname): + return True + parts = modname.split(".") + return any( + ".".join(parts[:x]) in self.extension_package_whitelist + for x in range(1, len(parts) + 1) + ) + + def ast_from_module_name(self, modname, context_file=None): + """given a module name, return the astroid object""" + if modname in self.astroid_cache: + return self.astroid_cache[modname] + if modname == "__main__": + return self._build_stub_module(modname) + old_cwd = os.getcwd() + if context_file: + os.chdir(os.path.dirname(context_file)) + try: + found_spec = self.file_from_module_name(modname, context_file) + if found_spec.type == spec.ModuleType.PY_ZIPMODULE: + module = self.zip_import_data(found_spec.location) + if module is not None: + return module + + elif found_spec.type in ( + spec.ModuleType.C_BUILTIN, + spec.ModuleType.C_EXTENSION, + ): + if ( + found_spec.type == spec.ModuleType.C_EXTENSION + and not self._can_load_extension(modname) + ): + return self._build_stub_module(modname) + try: + module = modutils.load_module_from_name(modname) + except Exception as ex: + raise exceptions.AstroidImportError( + "Loading {modname} failed with:\n{error}", + modname=modname, + path=found_spec.location, + ) from ex + return self.ast_from_module(module, modname) + + elif found_spec.type == spec.ModuleType.PY_COMPILED: + raise exceptions.AstroidImportError( + "Unable to load compiled module {modname}.", + modname=modname, + path=found_spec.location, + ) + + elif found_spec.type == spec.ModuleType.PY_NAMESPACE: + return self._build_namespace_module( + modname, found_spec.submodule_search_locations + ) + + if found_spec.location is None: + raise exceptions.AstroidImportError( + "Can't find a file for module {modname}.", modname=modname + ) + + return self.ast_from_file(found_spec.location, modname, fallback=False) + except exceptions.AstroidBuildingError as e: + for hook in self._failed_import_hooks: + try: + return hook(modname) + except exceptions.AstroidBuildingError: + pass + raise e + finally: + os.chdir(old_cwd) + + def zip_import_data(self, filepath): + if zipimport is None: + return None + + # pylint: disable=import-outside-toplevel; circular import + from astroid.builder import AstroidBuilder + + builder = AstroidBuilder(self) + for ext in ZIP_IMPORT_EXTS: + try: + eggpath, resource = filepath.rsplit(ext + os.path.sep, 1) + except ValueError: + continue + try: + importer = zipimport.zipimporter(eggpath + ext) + zmodname = resource.replace(os.path.sep, ".") + if importer.is_package(resource): + zmodname = zmodname + ".__init__" + module = builder.string_build( + importer.get_source(resource), zmodname, filepath + ) + return module + except Exception: # pylint: disable=broad-except + continue + return None + + def file_from_module_name(self, modname, contextfile): + try: + value = self._mod_file_cache[(modname, contextfile)] + except KeyError: + try: + value = modutils.file_info_from_modpath( + modname.split("."), context_file=contextfile + ) + except ImportError as ex: + value = exceptions.AstroidImportError( + "Failed to import module {modname} with error:\n{error}.", + modname=modname, + error=ex, + ) + self._mod_file_cache[(modname, contextfile)] = value + if isinstance(value, exceptions.AstroidBuildingError): + raise value + return value + + def ast_from_module(self, module, modname=None): + """given an imported module, return the astroid object""" + modname = modname or module.__name__ + if modname in self.astroid_cache: + return self.astroid_cache[modname] + try: + # some builtin modules don't have __file__ attribute + filepath = module.__file__ + if modutils.is_python_source(filepath): + return self.ast_from_file(filepath, modname) + except AttributeError: + pass + + # pylint: disable=import-outside-toplevel; circular import + from astroid.builder import AstroidBuilder + + return AstroidBuilder(self).module_build(module, modname) + + def ast_from_class(self, klass, modname=None): + """get astroid for the given class""" + if modname is None: + try: + modname = klass.__module__ + except AttributeError as exc: + raise exceptions.AstroidBuildingError( + "Unable to get module for class {class_name}.", + cls=klass, + class_repr=safe_repr(klass), + modname=modname, + ) from exc + modastroid = self.ast_from_module_name(modname) + return modastroid.getattr(klass.__name__)[0] # XXX + + def infer_ast_from_something(self, obj, context=None): + """infer astroid for the given class""" + if hasattr(obj, "__class__") and not isinstance(obj, type): + klass = obj.__class__ + else: + klass = obj + try: + modname = klass.__module__ + except AttributeError as exc: + raise exceptions.AstroidBuildingError( + "Unable to get module for {class_repr}.", + cls=klass, + class_repr=safe_repr(klass), + ) from exc + except Exception as exc: + raise exceptions.AstroidImportError( + "Unexpected error while retrieving module for {class_repr}:\n" + "{error}", + cls=klass, + class_repr=safe_repr(klass), + ) from exc + try: + name = klass.__name__ + except AttributeError as exc: + raise exceptions.AstroidBuildingError( + "Unable to get name for {class_repr}:\n", + cls=klass, + class_repr=safe_repr(klass), + ) from exc + except Exception as exc: + raise exceptions.AstroidImportError( + "Unexpected error while retrieving name for {class_repr}:\n" "{error}", + cls=klass, + class_repr=safe_repr(klass), + ) from exc + # take care, on living object __module__ is regularly wrong :( + modastroid = self.ast_from_module_name(modname) + if klass is obj: + for inferred in modastroid.igetattr(name, context): + yield inferred + else: + for inferred in modastroid.igetattr(name, context): + yield inferred.instantiate_class() + + def register_failed_import_hook(self, hook): + """Registers a hook to resolve imports that cannot be found otherwise. + + `hook` must be a function that accepts a single argument `modname` which + contains the name of the module or package that could not be imported. + If `hook` can resolve the import, must return a node of type `astroid.Module`, + otherwise, it must raise `AstroidBuildingError`. + """ + self._failed_import_hooks.append(hook) + + def cache_module(self, module): + """Cache a module if no module with the same name is known yet.""" + self.astroid_cache.setdefault(module.name, module) + + def bootstrap(self): + """Bootstrap the required AST modules needed for the manager to work + + The bootstrap usually involves building the AST for the builtins + module, which is required by the rest of astroid to work correctly. + """ + from astroid import raw_building # pylint: disable=import-outside-toplevel + + raw_building._astroid_bootstrapping() + + def clear_cache(self): + """Clear the underlying cache. Also bootstraps the builtins module.""" + self.astroid_cache.clear() + self.bootstrap() diff --git a/venv/Lib/site-packages/astroid/mixins.py b/venv/Lib/site-packages/astroid/mixins.py new file mode 100644 index 0000000..497a840 --- /dev/null +++ b/venv/Lib/site-packages/astroid/mixins.py @@ -0,0 +1,160 @@ +# Copyright (c) 2010-2011, 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014-2016, 2018 Claudiu Popa +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2018 Nick Drozd + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""This module contains some mixins for the different nodes. +""" +import itertools + +from astroid import decorators +from astroid import exceptions + + +class BlockRangeMixIn: + """override block range """ + + @decorators.cachedproperty + def blockstart_tolineno(self): + return self.lineno + + def _elsed_block_range(self, lineno, orelse, last=None): + """handle block line numbers range for try/finally, for, if and while + statements + """ + if lineno == self.fromlineno: + return lineno, lineno + if orelse: + if lineno >= orelse[0].fromlineno: + return lineno, orelse[-1].tolineno + return lineno, orelse[0].fromlineno - 1 + return lineno, last or self.tolineno + + +class FilterStmtsMixin: + """Mixin for statement filtering and assignment type""" + + def _get_filtered_stmts(self, _, node, _stmts, mystmt): + """method used in _filter_stmts to get statements and trigger break""" + if self.statement() is mystmt: + # original node's statement is the assignment, only keep + # current node (gen exp, list comp) + return [node], True + return _stmts, False + + def assign_type(self): + return self + + +class AssignTypeMixin: + def assign_type(self): + return self + + def _get_filtered_stmts(self, lookup_node, node, _stmts, mystmt): + """method used in filter_stmts""" + if self is mystmt: + return _stmts, True + if self.statement() is mystmt: + # original node's statement is the assignment, only keep + # current node (gen exp, list comp) + return [node], True + return _stmts, False + + +class ParentAssignTypeMixin(AssignTypeMixin): + def assign_type(self): + return self.parent.assign_type() + + +class ImportFromMixin(FilterStmtsMixin): + """MixIn for From and Import Nodes""" + + def _infer_name(self, frame, name): + return name + + def do_import_module(self, modname=None): + """return the ast for a module whose name is imported by + """ + # handle special case where we are on a package node importing a module + # using the same name as the package, which may end in an infinite loop + # on relative imports + # XXX: no more needed ? + mymodule = self.root() + level = getattr(self, "level", None) # Import as no level + if modname is None: + modname = self.modname + # XXX we should investigate deeper if we really want to check + # importing itself: modname and mymodule.name be relative or absolute + if mymodule.relative_to_absolute_name(modname, level) == mymodule.name: + # FIXME: we used to raise InferenceError here, but why ? + return mymodule + + return mymodule.import_module( + modname, level=level, relative_only=level and level >= 1 + ) + + def real_name(self, asname): + """get name from 'as' name""" + for name, _asname in self.names: + if name == "*": + return asname + if not _asname: + name = name.split(".", 1)[0] + _asname = name + if asname == _asname: + return name + raise exceptions.AttributeInferenceError( + "Could not find original name for {attribute} in {target!r}", + target=self, + attribute=asname, + ) + + +class MultiLineBlockMixin: + """Mixin for nodes with multi-line blocks, e.g. For and FunctionDef. + Note that this does not apply to every node with a `body` field. + For instance, an If node has a multi-line body, but the body of an + IfExpr is not multi-line, and hence cannot contain Return nodes, + Assign nodes, etc. + """ + + @decorators.cachedproperty + def _multi_line_blocks(self): + return tuple(getattr(self, field) for field in self._multi_line_block_fields) + + def _get_return_nodes_skip_functions(self): + for block in self._multi_line_blocks: + for child_node in block: + if child_node.is_function: + continue + yield from child_node._get_return_nodes_skip_functions() + + def _get_yield_nodes_skip_lambdas(self): + for block in self._multi_line_blocks: + for child_node in block: + if child_node.is_lambda: + continue + yield from child_node._get_yield_nodes_skip_lambdas() + + @decorators.cached + def _get_assign_nodes(self): + children_assign_nodes = ( + child_node._get_assign_nodes() + for block in self._multi_line_blocks + for child_node in block + ) + return list(itertools.chain.from_iterable(children_assign_nodes)) + + +class NoChildrenMixin: + """Mixin for nodes with no children, e.g. Pass.""" + + def get_children(self): + yield from () diff --git a/venv/Lib/site-packages/astroid/modutils.py b/venv/Lib/site-packages/astroid/modutils.py new file mode 100644 index 0000000..0c009b1 --- /dev/null +++ b/venv/Lib/site-packages/astroid/modutils.py @@ -0,0 +1,698 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2014 Denis Laxalde +# Copyright (c) 2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2015 Radosław Ganczarek +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2016 Ceridwen +# Copyright (c) 2018 Mario Corchero +# Copyright (c) 2018 Mario Corchero +# Copyright (c) 2018 Anthony Sottile + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Python modules manipulation utility functions. + +:type PY_SOURCE_EXTS: tuple(str) +:var PY_SOURCE_EXTS: list of possible python source file extension + +:type STD_LIB_DIRS: set of str +:var STD_LIB_DIRS: directories where standard modules are located + +:type BUILTIN_MODULES: dict +:var BUILTIN_MODULES: dictionary with builtin module names has key +""" +import imp +import os +import platform +import sys +import itertools +from distutils.sysconfig import get_python_lib # pylint: disable=import-error + +# pylint: disable=import-error, no-name-in-module +from distutils.errors import DistutilsPlatformError + +# distutils is replaced by virtualenv with a module that does +# weird path manipulations in order to get to the +# real distutils module. + +from .interpreter._import import spec +from .interpreter._import import util + +if sys.platform.startswith("win"): + PY_SOURCE_EXTS = ("py", "pyw") + PY_COMPILED_EXTS = ("dll", "pyd") +else: + PY_SOURCE_EXTS = ("py",) + PY_COMPILED_EXTS = ("so",) + + +try: + # The explicit sys.prefix is to work around a patch in virtualenv that + # replaces the 'real' sys.prefix (i.e. the location of the binary) + # with the prefix from which the virtualenv was created. This throws + # off the detection logic for standard library modules, thus the + # workaround. + STD_LIB_DIRS = { + get_python_lib(standard_lib=True, prefix=sys.prefix), + # Take care of installations where exec_prefix != prefix. + get_python_lib(standard_lib=True, prefix=sys.exec_prefix), + get_python_lib(standard_lib=True), + } +# get_python_lib(standard_lib=1) is not available on pypy, set STD_LIB_DIR to +# non-valid path, see https://bugs.pypy.org/issue1164 +except DistutilsPlatformError: + STD_LIB_DIRS = set() + +if os.name == "nt": + STD_LIB_DIRS.add(os.path.join(sys.prefix, "dlls")) + try: + # real_prefix is defined when running inside virtual environments, + # created with the **virtualenv** library. + STD_LIB_DIRS.add(os.path.join(sys.real_prefix, "dlls")) + except AttributeError: + # sys.base_exec_prefix is always defined, but in a virtual environment + # created with the stdlib **venv** module, it points to the original + # installation, if the virtual env is activated. + try: + STD_LIB_DIRS.add(os.path.join(sys.base_exec_prefix, "dlls")) + except AttributeError: + pass + +if platform.python_implementation() == "PyPy": + _root = os.path.join(sys.prefix, "lib_pypy") + STD_LIB_DIRS.add(_root) + try: + # real_prefix is defined when running inside virtualenv. + STD_LIB_DIRS.add(os.path.join(sys.real_prefix, "lib_pypy")) + except AttributeError: + pass + del _root +if os.name == "posix": + # Need the real prefix is we're under a virtualenv, otherwise + # the usual one will do. + try: + prefix = sys.real_prefix + except AttributeError: + prefix = sys.prefix + + def _posix_path(path): + base_python = "python%d.%d" % sys.version_info[:2] + return os.path.join(prefix, path, base_python) + + STD_LIB_DIRS.add(_posix_path("lib")) + if sys.maxsize > 2 ** 32: + # This tries to fix a problem with /usr/lib64 builds, + # where systems are running both 32-bit and 64-bit code + # on the same machine, which reflects into the places where + # standard library could be found. More details can be found + # here http://bugs.python.org/issue1294959. + # An easy reproducing case would be + # https://github.com/PyCQA/pylint/issues/712#issuecomment-163178753 + STD_LIB_DIRS.add(_posix_path("lib64")) + +EXT_LIB_DIRS = {get_python_lib(), get_python_lib(True)} +IS_JYTHON = platform.python_implementation() == "Jython" +BUILTIN_MODULES = dict.fromkeys(sys.builtin_module_names, True) + + +class NoSourceFile(Exception): + """exception raised when we are not able to get a python + source file for a precompiled file + """ + + +def _normalize_path(path): + return os.path.normcase(os.path.abspath(path)) + + +def _canonicalize_path(path): + return os.path.realpath(os.path.expanduser(path)) + + +def _path_from_filename(filename, is_jython=IS_JYTHON): + if not is_jython: + return filename + head, has_pyclass, _ = filename.partition("$py.class") + if has_pyclass: + return head + ".py" + return filename + + +def _handle_blacklist(blacklist, dirnames, filenames): + """remove files/directories in the black list + + dirnames/filenames are usually from os.walk + """ + for norecurs in blacklist: + if norecurs in dirnames: + dirnames.remove(norecurs) + elif norecurs in filenames: + filenames.remove(norecurs) + + +_NORM_PATH_CACHE = {} + + +def _cache_normalize_path(path): + """abspath with caching""" + # _module_file calls abspath on every path in sys.path every time it's + # called; on a larger codebase this easily adds up to half a second just + # assembling path components. This cache alleviates that. + try: + return _NORM_PATH_CACHE[path] + except KeyError: + if not path: # don't cache result for '' + return _normalize_path(path) + result = _NORM_PATH_CACHE[path] = _normalize_path(path) + return result + + +def load_module_from_name(dotted_name, path=None, use_sys=True): + """Load a Python module from its name. + + :type dotted_name: str + :param dotted_name: python name of a module or package + + :type path: list or None + :param path: + optional list of path where the module or package should be + searched (use sys.path if nothing or None is given) + + :type use_sys: bool + :param use_sys: + boolean indicating whether the sys.modules dictionary should be + used or not + + + :raise ImportError: if the module or package is not found + + :rtype: module + :return: the loaded module + """ + return load_module_from_modpath(dotted_name.split("."), path, use_sys) + + +def load_module_from_modpath(parts, path=None, use_sys=1): + """Load a python module from its split name. + + :type parts: list(str) or tuple(str) + :param parts: + python name of a module or package split on '.' + + :type path: list or None + :param path: + optional list of path where the module or package should be + searched (use sys.path if nothing or None is given) + + :type use_sys: bool + :param use_sys: + boolean indicating whether the sys.modules dictionary should be used or not + + :raise ImportError: if the module or package is not found + + :rtype: module + :return: the loaded module + """ + if use_sys: + try: + return sys.modules[".".join(parts)] + except KeyError: + pass + modpath = [] + prevmodule = None + for part in parts: + modpath.append(part) + curname = ".".join(modpath) + module = None + if len(modpath) != len(parts): + # even with use_sys=False, should try to get outer packages from sys.modules + module = sys.modules.get(curname) + elif use_sys: + # because it may have been indirectly loaded through a parent + module = sys.modules.get(curname) + if module is None: + mp_file, mp_filename, mp_desc = imp.find_module(part, path) + module = imp.load_module(curname, mp_file, mp_filename, mp_desc) + # mp_file still needs to be closed. + if mp_file: + mp_file.close() + if prevmodule: + setattr(prevmodule, part, module) + _file = getattr(module, "__file__", "") + prevmodule = module + if not _file and util.is_namespace(curname): + continue + if not _file and len(modpath) != len(parts): + raise ImportError("no module in %s" % ".".join(parts[len(modpath) :])) + path = [os.path.dirname(_file)] + return module + + +def load_module_from_file(filepath, path=None, use_sys=True, extrapath=None): + """Load a Python module from it's path. + + :type filepath: str + :param filepath: path to the python module or package + + :type path: list or None + :param path: + optional list of path where the module or package should be + searched (use sys.path if nothing or None is given) + + :type use_sys: bool + :param use_sys: + boolean indicating whether the sys.modules dictionary should be + used or not + + + :raise ImportError: if the module or package is not found + + :rtype: module + :return: the loaded module + """ + modpath = modpath_from_file(filepath, extrapath) + return load_module_from_modpath(modpath, path, use_sys) + + +def check_modpath_has_init(path, mod_path): + """check there are some __init__.py all along the way""" + modpath = [] + for part in mod_path: + modpath.append(part) + path = os.path.join(path, part) + if not _has_init(path): + old_namespace = util.is_namespace(".".join(modpath)) + if not old_namespace: + return False + return True + + +def _get_relative_base_path(filename, path_to_check): + """Extracts the relative mod path of the file to import from + + Check if a file is within the passed in path and if so, returns the + relative mod path from the one passed in. + + If the filename is no in path_to_check, returns None + + Note this function will look for both abs and realpath of the file, + this allows to find the relative base path even if the file is a + symlink of a file in the passed in path + + Examples: + _get_relative_base_path("/a/b/c/d.py", "/a/b") -> ["c","d"] + _get_relative_base_path("/a/b/c/d.py", "/dev") -> None + """ + importable_path = None + path_to_check = os.path.normcase(path_to_check) + abs_filename = os.path.abspath(filename) + if os.path.normcase(abs_filename).startswith(path_to_check): + importable_path = abs_filename + + real_filename = os.path.realpath(filename) + if os.path.normcase(real_filename).startswith(path_to_check): + importable_path = real_filename + + if importable_path: + base_path = os.path.splitext(importable_path)[0] + relative_base_path = base_path[len(path_to_check) :] + return [pkg for pkg in relative_base_path.split(os.sep) if pkg] + + return None + + +def modpath_from_file_with_callback(filename, extrapath=None, is_package_cb=None): + filename = os.path.expanduser(_path_from_filename(filename)) + + if extrapath is not None: + for path_ in itertools.chain(map(_canonicalize_path, extrapath), extrapath): + path = os.path.abspath(path_) + if not path: + continue + submodpath = _get_relative_base_path(filename, path) + if not submodpath: + continue + if is_package_cb(path, submodpath[:-1]): + return extrapath[path_].split(".") + submodpath + + for path in itertools.chain(map(_canonicalize_path, sys.path), sys.path): + path = _cache_normalize_path(path) + if not path: + continue + modpath = _get_relative_base_path(filename, path) + if not modpath: + continue + if is_package_cb(path, modpath[:-1]): + return modpath + + raise ImportError( + "Unable to find module for %s in %s" % (filename, ", \n".join(sys.path)) + ) + + +def modpath_from_file(filename, extrapath=None): + """given a file path return the corresponding split module's name + (i.e name of a module or package split on '.') + + :type filename: str + :param filename: file's path for which we want the module's name + + :type extrapath: dict + :param extrapath: + optional extra search path, with path as key and package name for the path + as value. This is usually useful to handle package split in multiple + directories using __path__ trick. + + + :raise ImportError: + if the corresponding module's name has not been found + + :rtype: list(str) + :return: the corresponding split module's name + """ + return modpath_from_file_with_callback(filename, extrapath, check_modpath_has_init) + + +def file_from_modpath(modpath, path=None, context_file=None): + return file_info_from_modpath(modpath, path, context_file).location + + +def file_info_from_modpath(modpath, path=None, context_file=None): + """given a mod path (i.e. split module / package name), return the + corresponding file, giving priority to source file over precompiled + file if it exists + + :type modpath: list or tuple + :param modpath: + split module's name (i.e name of a module or package split + on '.') + (this means explicit relative imports that start with dots have + empty strings in this list!) + + :type path: list or None + :param path: + optional list of path where the module or package should be + searched (use sys.path if nothing or None is given) + + :type context_file: str or None + :param context_file: + context file to consider, necessary if the identifier has been + introduced using a relative import unresolvable in the actual + context (i.e. modutils) + + :raise ImportError: if there is no such module in the directory + + :rtype: (str or None, import type) + :return: + the path to the module's file or None if it's an integrated + builtin module such as 'sys' + """ + if context_file is not None: + context = os.path.dirname(context_file) + else: + context = context_file + if modpath[0] == "xml": + # handle _xmlplus + try: + return _spec_from_modpath(["_xmlplus"] + modpath[1:], path, context) + except ImportError: + return _spec_from_modpath(modpath, path, context) + elif modpath == ["os", "path"]: + # FIXME: currently ignoring search_path... + return spec.ModuleSpec( + name="os.path", location=os.path.__file__, module_type=imp.PY_SOURCE + ) + return _spec_from_modpath(modpath, path, context) + + +def get_module_part(dotted_name, context_file=None): + """given a dotted name return the module part of the name : + + >>> get_module_part('astroid.as_string.dump') + 'astroid.as_string' + + :type dotted_name: str + :param dotted_name: full name of the identifier we are interested in + + :type context_file: str or None + :param context_file: + context file to consider, necessary if the identifier has been + introduced using a relative import unresolvable in the actual + context (i.e. modutils) + + + :raise ImportError: if there is no such module in the directory + + :rtype: str or None + :return: + the module part of the name or None if we have not been able at + all to import the given name + + XXX: deprecated, since it doesn't handle package precedence over module + (see #10066) + """ + # os.path trick + if dotted_name.startswith("os.path"): + return "os.path" + parts = dotted_name.split(".") + if context_file is not None: + # first check for builtin module which won't be considered latter + # in that case (path != None) + if parts[0] in BUILTIN_MODULES: + if len(parts) > 2: + raise ImportError(dotted_name) + return parts[0] + # don't use += or insert, we want a new list to be created ! + path = None + starti = 0 + if parts[0] == "": + assert ( + context_file is not None + ), "explicit relative import, but no context_file?" + path = [] # prevent resolving the import non-relatively + starti = 1 + while parts[starti] == "": # for all further dots: change context + starti += 1 + context_file = os.path.dirname(context_file) + for i in range(starti, len(parts)): + try: + file_from_modpath( + parts[starti : i + 1], path=path, context_file=context_file + ) + except ImportError: + if i < max(1, len(parts) - 2): + raise + return ".".join(parts[:i]) + return dotted_name + + +def get_module_files(src_directory, blacklist, list_all=False): + """given a package directory return a list of all available python + module's files in the package and its subpackages + + :type src_directory: str + :param src_directory: + path of the directory corresponding to the package + + :type blacklist: list or tuple + :param blacklist: iterable + list of files or directories to ignore. + + :type list_all: bool + :param list_all: + get files from all paths, including ones without __init__.py + + :rtype: list + :return: + the list of all available python module's files in the package and + its subpackages + """ + files = [] + for directory, dirnames, filenames in os.walk(src_directory): + if directory in blacklist: + continue + _handle_blacklist(blacklist, dirnames, filenames) + # check for __init__.py + if not list_all and "__init__.py" not in filenames: + dirnames[:] = () + continue + for filename in filenames: + if _is_python_file(filename): + src = os.path.join(directory, filename) + files.append(src) + return files + + +def get_source_file(filename, include_no_ext=False): + """given a python module's file name return the matching source file + name (the filename will be returned identically if it's already an + absolute path to a python source file...) + + :type filename: str + :param filename: python module's file name + + + :raise NoSourceFile: if no source file exists on the file system + + :rtype: str + :return: the absolute path of the source file if it exists + """ + filename = os.path.abspath(_path_from_filename(filename)) + base, orig_ext = os.path.splitext(filename) + for ext in PY_SOURCE_EXTS: + source_path = "%s.%s" % (base, ext) + if os.path.exists(source_path): + return source_path + if include_no_ext and not orig_ext and os.path.exists(base): + return base + raise NoSourceFile(filename) + + +def is_python_source(filename): + """ + rtype: bool + return: True if the filename is a python source file + """ + return os.path.splitext(filename)[1][1:] in PY_SOURCE_EXTS + + +def is_standard_module(modname, std_path=None): + """try to guess if a module is a standard python module (by default, + see `std_path` parameter's description) + + :type modname: str + :param modname: name of the module we are interested in + + :type std_path: list(str) or tuple(str) + :param std_path: list of path considered has standard + + + :rtype: bool + :return: + true if the module: + - is located on the path listed in one of the directory in `std_path` + - is a built-in module + """ + modname = modname.split(".")[0] + try: + filename = file_from_modpath([modname]) + except ImportError: + # import failed, i'm probably not so wrong by supposing it's + # not standard... + return False + # modules which are not living in a file are considered standard + # (sys and __builtin__ for instance) + if filename is None: + # we assume there are no namespaces in stdlib + return not util.is_namespace(modname) + filename = _normalize_path(filename) + for path in EXT_LIB_DIRS: + if filename.startswith(_cache_normalize_path(path)): + return False + if std_path is None: + std_path = STD_LIB_DIRS + for path in std_path: + if filename.startswith(_cache_normalize_path(path)): + return True + return False + + +def is_relative(modname, from_file): + """return true if the given module name is relative to the given + file name + + :type modname: str + :param modname: name of the module we are interested in + + :type from_file: str + :param from_file: + path of the module from which modname has been imported + + :rtype: bool + :return: + true if the module has been imported relatively to `from_file` + """ + if not os.path.isdir(from_file): + from_file = os.path.dirname(from_file) + if from_file in sys.path: + return False + try: + stream, _, _ = imp.find_module(modname.split(".")[0], [from_file]) + + # Close the stream to avoid ResourceWarnings. + if stream: + stream.close() + return True + except ImportError: + return False + + +# internal only functions ##################################################### + + +def _spec_from_modpath(modpath, path=None, context=None): + """given a mod path (i.e. split module / package name), return the + corresponding spec + + this function is used internally, see `file_from_modpath`'s + documentation for more information + """ + assert modpath + location = None + if context is not None: + try: + found_spec = spec.find_spec(modpath, [context]) + location = found_spec.location + except ImportError: + found_spec = spec.find_spec(modpath, path) + location = found_spec.location + else: + found_spec = spec.find_spec(modpath, path) + if found_spec.type == spec.ModuleType.PY_COMPILED: + try: + location = get_source_file(found_spec.location) + return found_spec._replace( + location=location, type=spec.ModuleType.PY_SOURCE + ) + except NoSourceFile: + return found_spec._replace(location=location) + elif found_spec.type == spec.ModuleType.C_BUILTIN: + # integrated builtin module + return found_spec._replace(location=None) + elif found_spec.type == spec.ModuleType.PKG_DIRECTORY: + location = _has_init(found_spec.location) + return found_spec._replace(location=location, type=spec.ModuleType.PY_SOURCE) + return found_spec + + +def _is_python_file(filename): + """return true if the given filename should be considered as a python file + + .pyc and .pyo are ignored + """ + return filename.endswith((".py", ".so", ".pyd", ".pyw")) + + +def _has_init(directory): + """if the given directory has a valid __init__ file, return its path, + else return None + """ + mod_or_pack = os.path.join(directory, "__init__") + for ext in PY_SOURCE_EXTS + ("pyc", "pyo"): + if os.path.exists(mod_or_pack + "." + ext): + return mod_or_pack + "." + ext + return None + + +def is_namespace(specobj): + return specobj.type == spec.ModuleType.PY_NAMESPACE + + +def is_directory(specobj): + return specobj.type == spec.ModuleType.PKG_DIRECTORY diff --git a/venv/Lib/site-packages/astroid/node_classes.py b/venv/Lib/site-packages/astroid/node_classes.py new file mode 100644 index 0000000..994c96b --- /dev/null +++ b/venv/Lib/site-packages/astroid/node_classes.py @@ -0,0 +1,4775 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2009-2011, 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2010 Daniel Harding +# Copyright (c) 2012 FELD Boris +# Copyright (c) 2013-2014 Google, Inc. +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2016-2017 Derek Gustafson +# Copyright (c) 2016 Jared Garst +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2016 Dave Baum +# Copyright (c) 2017-2018 Ashley Whetter +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2017 rr- +# Copyright (c) 2018 Bryce Guinta +# Copyright (c) 2018 brendanator +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 HoverHell + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +# pylint: disable=too-many-lines; https://github.com/PyCQA/astroid/issues/465 + +"""Module for some node classes. More nodes in scoped_nodes.py +""" + +import abc +import builtins as builtins_mod +import itertools +import pprint +import sys +from functools import lru_cache, singledispatch as _singledispatch + +from astroid import as_string +from astroid import bases +from astroid import context as contextmod +from astroid import decorators +from astroid import exceptions +from astroid import manager +from astroid import mixins +from astroid import util + + +BUILTINS = builtins_mod.__name__ +MANAGER = manager.AstroidManager() +PY38 = sys.version_info[:2] >= (3, 8) + + +def _is_const(value): + return isinstance(value, tuple(CONST_CLS)) + + +@decorators.raise_if_nothing_inferred +def unpack_infer(stmt, context=None): + """recursively generate nodes inferred by the given statement. + If the inferred value is a list or a tuple, recurse on the elements + """ + if isinstance(stmt, (List, Tuple)): + for elt in stmt.elts: + if elt is util.Uninferable: + yield elt + continue + yield from unpack_infer(elt, context) + return dict(node=stmt, context=context) + # if inferred is a final node, return it and stop + inferred = next(stmt.infer(context)) + if inferred is stmt: + yield inferred + return dict(node=stmt, context=context) + # else, infer recursively, except Uninferable object that should be returned as is + for inferred in stmt.infer(context): + if inferred is util.Uninferable: + yield inferred + else: + yield from unpack_infer(inferred, context) + + return dict(node=stmt, context=context) + + +def are_exclusive( + stmt1, stmt2, exceptions=None +): # pylint: disable=redefined-outer-name + """return true if the two given statements are mutually exclusive + + `exceptions` may be a list of exception names. If specified, discard If + branches and check one of the statement is in an exception handler catching + one of the given exceptions. + + algorithm : + 1) index stmt1's parents + 2) climb among stmt2's parents until we find a common parent + 3) if the common parent is a If or TryExcept statement, look if nodes are + in exclusive branches + """ + # index stmt1's parents + stmt1_parents = {} + children = {} + node = stmt1.parent + previous = stmt1 + while node: + stmt1_parents[node] = 1 + children[node] = previous + previous = node + node = node.parent + # climb among stmt2's parents until we find a common parent + node = stmt2.parent + previous = stmt2 + while node: + if node in stmt1_parents: + # if the common parent is a If or TryExcept statement, look if + # nodes are in exclusive branches + if isinstance(node, If) and exceptions is None: + if ( + node.locate_child(previous)[1] + is not node.locate_child(children[node])[1] + ): + return True + elif isinstance(node, TryExcept): + c2attr, c2node = node.locate_child(previous) + c1attr, c1node = node.locate_child(children[node]) + if c1node is not c2node: + first_in_body_caught_by_handlers = ( + c2attr == "handlers" + and c1attr == "body" + and previous.catch(exceptions) + ) + second_in_body_caught_by_handlers = ( + c2attr == "body" + and c1attr == "handlers" + and children[node].catch(exceptions) + ) + first_in_else_other_in_handlers = ( + c2attr == "handlers" and c1attr == "orelse" + ) + second_in_else_other_in_handlers = ( + c2attr == "orelse" and c1attr == "handlers" + ) + if any( + ( + first_in_body_caught_by_handlers, + second_in_body_caught_by_handlers, + first_in_else_other_in_handlers, + second_in_else_other_in_handlers, + ) + ): + return True + elif c2attr == "handlers" and c1attr == "handlers": + return previous is not children[node] + return False + previous = node + node = node.parent + return False + + +# getitem() helpers. + +_SLICE_SENTINEL = object() + + +def _slice_value(index, context=None): + """Get the value of the given slice index.""" + + if isinstance(index, Const): + if isinstance(index.value, (int, type(None))): + return index.value + elif index is None: + return None + else: + # Try to infer what the index actually is. + # Since we can't return all the possible values, + # we'll stop at the first possible value. + try: + inferred = next(index.infer(context=context)) + except exceptions.InferenceError: + pass + else: + if isinstance(inferred, Const): + if isinstance(inferred.value, (int, type(None))): + return inferred.value + + # Use a sentinel, because None can be a valid + # value that this function can return, + # as it is the case for unspecified bounds. + return _SLICE_SENTINEL + + +def _infer_slice(node, context=None): + lower = _slice_value(node.lower, context) + upper = _slice_value(node.upper, context) + step = _slice_value(node.step, context) + if all(elem is not _SLICE_SENTINEL for elem in (lower, upper, step)): + return slice(lower, upper, step) + + raise exceptions.AstroidTypeError( + message="Could not infer slice used in subscript", + node=node, + index=node.parent, + context=context, + ) + + +def _container_getitem(instance, elts, index, context=None): + """Get a slice or an item, using the given *index*, for the given sequence.""" + try: + if isinstance(index, Slice): + index_slice = _infer_slice(index, context=context) + new_cls = instance.__class__() + new_cls.elts = elts[index_slice] + new_cls.parent = instance.parent + return new_cls + if isinstance(index, Const): + return elts[index.value] + except IndexError as exc: + raise exceptions.AstroidIndexError( + message="Index {index!s} out of range", + node=instance, + index=index, + context=context, + ) from exc + except TypeError as exc: + raise exceptions.AstroidTypeError( + message="Type error {error!r}", node=instance, index=index, context=context + ) from exc + + raise exceptions.AstroidTypeError("Could not use %s as subscript index" % index) + + +OP_PRECEDENCE = { + op: precedence + for precedence, ops in enumerate( + [ + ["Lambda"], # lambda x: x + 1 + ["IfExp"], # 1 if True else 2 + ["or"], + ["and"], + ["not"], + ["Compare"], # in, not in, is, is not, <, <=, >, >=, !=, == + ["|"], + ["^"], + ["&"], + ["<<", ">>"], + ["+", "-"], + ["*", "@", "/", "//", "%"], + ["UnaryOp"], # +, -, ~ + ["**"], + ["Await"], + ] + ) + for op in ops +} + + +class NodeNG: + """ A node of the new Abstract Syntax Tree (AST). + + This is the base class for all Astroid node classes. + """ + + is_statement = False + """Whether this node indicates a statement. + + :type: bool + """ + optional_assign = False # True for For (and for Comprehension if py <3.0) + """Whether this node optionally assigns a variable. + + This is for loop assignments because loop won't necessarily perform an + assignment if the loop has no iterations. + This is also the case from comprehensions in Python 2. + + :type: bool + """ + is_function = False # True for FunctionDef nodes + """Whether this node indicates a function. + + :type: bool + """ + is_lambda = False + # Attributes below are set by the builder module or by raw factories + lineno = None + """The line that this node appears on in the source code. + + :type: int or None + """ + col_offset = None + """The column that this node appears on in the source code. + + :type: int or None + """ + parent = None + """The parent node in the syntax tree. + + :type: NodeNG or None + """ + _astroid_fields = () + """Node attributes that contain child nodes. + + This is redefined in most concrete classes. + + :type: tuple(str) + """ + _other_fields = () + """Node attributes that do not contain child nodes. + + :type: tuple(str) + """ + _other_other_fields = () + """Attributes that contain AST-dependent fields. + + :type: tuple(str) + """ + # instance specific inference function infer(node, context) + _explicit_inference = None + + def __init__(self, lineno=None, col_offset=None, parent=None): + """ + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.lineno = lineno + self.col_offset = col_offset + self.parent = parent + + def infer(self, context=None, **kwargs): + """Get a generator of the inferred values. + + This is the main entry point to the inference system. + + .. seealso:: :ref:`inference` + + If the instance has some explicit inference function set, it will be + called instead of the default interface. + + :returns: The inferred values. + :rtype: iterable + """ + if context is not None: + context = context.extra_context.get(self, context) + if self._explicit_inference is not None: + # explicit_inference is not bound, give it self explicitly + try: + # pylint: disable=not-callable + return self._explicit_inference(self, context, **kwargs) + except exceptions.UseInferenceDefault: + pass + + if not context: + return self._infer(context, **kwargs) + + key = (self, context.lookupname, context.callcontext, context.boundnode) + if key in context.inferred: + return iter(context.inferred[key]) + + gen = context.cache_generator(key, self._infer(context, **kwargs)) + return util.limit_inference(gen, MANAGER.max_inferable_values) + + def _repr_name(self): + """Get a name for nice representation. + + This is either :attr:`name`, :attr:`attrname`, or the empty string. + + :returns: The nice name. + :rtype: str + """ + names = {"name", "attrname"} + if all(name not in self._astroid_fields for name in names): + return getattr(self, "name", getattr(self, "attrname", "")) + return "" + + def __str__(self): + rname = self._repr_name() + cname = type(self).__name__ + if rname: + string = "%(cname)s.%(rname)s(%(fields)s)" + alignment = len(cname) + len(rname) + 2 + else: + string = "%(cname)s(%(fields)s)" + alignment = len(cname) + 1 + result = [] + for field in self._other_fields + self._astroid_fields: + value = getattr(self, field) + width = 80 - len(field) - alignment + lines = pprint.pformat(value, indent=2, width=width).splitlines(True) + + inner = [lines[0]] + for line in lines[1:]: + inner.append(" " * alignment + line) + result.append("%s=%s" % (field, "".join(inner))) + + return string % { + "cname": cname, + "rname": rname, + "fields": (",\n" + " " * alignment).join(result), + } + + def __repr__(self): + rname = self._repr_name() + if rname: + string = "<%(cname)s.%(rname)s l.%(lineno)s at 0x%(id)x>" + else: + string = "<%(cname)s l.%(lineno)s at 0x%(id)x>" + return string % { + "cname": type(self).__name__, + "rname": rname, + "lineno": self.fromlineno, + "id": id(self), + } + + def accept(self, visitor): + """Visit this node using the given visitor.""" + func = getattr(visitor, "visit_" + self.__class__.__name__.lower()) + return func(self) + + def get_children(self): + """Get the child nodes below this node. + + :returns: The children. + :rtype: iterable(NodeNG) + """ + for field in self._astroid_fields: + attr = getattr(self, field) + if attr is None: + continue + if isinstance(attr, (list, tuple)): + yield from attr + else: + yield attr + + def last_child(self): + """An optimized version of list(get_children())[-1] + + :returns: The last child, or None if no children exist. + :rtype: NodeNG or None + """ + for field in self._astroid_fields[::-1]: + attr = getattr(self, field) + if not attr: # None or empty listy / tuple + continue + if isinstance(attr, (list, tuple)): + return attr[-1] + + return attr + return None + + def parent_of(self, node): + """Check if this node is the parent of the given node. + + :param node: The node to check if it is the child. + :type node: NodeNG + + :returns: True if this node is the parent of the given node, + False otherwise. + :rtype: bool + """ + parent = node.parent + while parent is not None: + if self is parent: + return True + parent = parent.parent + return False + + def statement(self): + """The first parent node, including self, marked as statement node. + + :returns: The first parent statement. + :rtype: NodeNG + """ + if self.is_statement: + return self + return self.parent.statement() + + def frame(self): + """The first parent frame node. + + A frame node is a :class:`Module`, :class:`FunctionDef`, + or :class:`ClassDef`. + + :returns: The first parent frame node. + :rtype: Module or FunctionDef or ClassDef + """ + return self.parent.frame() + + def scope(self): + """The first parent node defining a new scope. + + :returns: The first parent scope node. + :rtype: Module or FunctionDef or ClassDef or Lambda or GenExpr + """ + if self.parent: + return self.parent.scope() + return None + + def root(self): + """Return the root node of the syntax tree. + + :returns: The root node. + :rtype: Module + """ + if self.parent: + return self.parent.root() + return self + + def child_sequence(self, child): + """Search for the sequence that contains this child. + + :param child: The child node to search sequences for. + :type child: NodeNG + + :returns: The sequence containing the given child node. + :rtype: iterable(NodeNG) + + :raises AstroidError: If no sequence could be found that contains + the given child. + """ + for field in self._astroid_fields: + node_or_sequence = getattr(self, field) + if node_or_sequence is child: + return [node_or_sequence] + # /!\ compiler.ast Nodes have an __iter__ walking over child nodes + if ( + isinstance(node_or_sequence, (tuple, list)) + and child in node_or_sequence + ): + return node_or_sequence + + msg = "Could not find %s in %s's children" + raise exceptions.AstroidError(msg % (repr(child), repr(self))) + + def locate_child(self, child): + """Find the field of this node that contains the given child. + + :param child: The child node to search fields for. + :type child: NodeNG + + :returns: A tuple of the name of the field that contains the child, + and the sequence or node that contains the child node. + :rtype: tuple(str, iterable(NodeNG) or NodeNG) + + :raises AstroidError: If no field could be found that contains + the given child. + """ + for field in self._astroid_fields: + node_or_sequence = getattr(self, field) + # /!\ compiler.ast Nodes have an __iter__ walking over child nodes + if child is node_or_sequence: + return field, child + if ( + isinstance(node_or_sequence, (tuple, list)) + and child in node_or_sequence + ): + return field, node_or_sequence + msg = "Could not find %s in %s's children" + raise exceptions.AstroidError(msg % (repr(child), repr(self))) + + # FIXME : should we merge child_sequence and locate_child ? locate_child + # is only used in are_exclusive, child_sequence one time in pylint. + + def next_sibling(self): + """The next sibling statement node. + + :returns: The next sibling statement node. + :rtype: NodeNG or None + """ + return self.parent.next_sibling() + + def previous_sibling(self): + """The previous sibling statement. + + :returns: The previous sibling statement node. + :rtype: NodeNG or None + """ + return self.parent.previous_sibling() + + # these are lazy because they're relatively expensive to compute for every + # single node, and they rarely get looked at + + @decorators.cachedproperty + def fromlineno(self): + """The first line that this node appears on in the source code. + + :type: int or None + """ + if self.lineno is None: + return self._fixed_source_line() + + return self.lineno + + @decorators.cachedproperty + def tolineno(self): + """The last line that this node appears on in the source code. + + :type: int or None + """ + if not self._astroid_fields: + # can't have children + lastchild = None + else: + lastchild = self.last_child() + if lastchild is None: + return self.fromlineno + + return lastchild.tolineno + + def _fixed_source_line(self): + """Attempt to find the line that this node appears on. + + We need this method since not all nodes have :attr:`lineno` set. + + :returns: The line number of this node, + or None if this could not be determined. + :rtype: int or None + """ + line = self.lineno + _node = self + try: + while line is None: + _node = next(_node.get_children()) + line = _node.lineno + except StopIteration: + _node = self.parent + while _node and line is None: + line = _node.lineno + _node = _node.parent + return line + + def block_range(self, lineno): + """Get a range from the given line number to where this node ends. + + :param lineno: The line number to start the range at. + :type lineno: int + + :returns: The range of line numbers that this node belongs to, + starting at the given line number. + :rtype: tuple(int, int or None) + """ + return lineno, self.tolineno + + def set_local(self, name, stmt): + """Define that the given name is declared in the given statement node. + + This definition is stored on the parent scope node. + + .. seealso:: :meth:`scope` + + :param name: The name that is being defined. + :type name: str + + :param stmt: The statement that defines the given name. + :type stmt: NodeNG + """ + self.parent.set_local(name, stmt) + + def nodes_of_class(self, klass, skip_klass=None): + """Get the nodes (including this one or below) of the given types. + + :param klass: The types of node to search for. + :type klass: builtins.type or tuple(builtins.type) + + :param skip_klass: The types of node to ignore. This is useful to ignore + subclasses of :attr:`klass`. + :type skip_klass: builtins.type or tuple(builtins.type) + + :returns: The node of the given types. + :rtype: iterable(NodeNG) + """ + if isinstance(self, klass): + yield self + + if skip_klass is None: + for child_node in self.get_children(): + yield from child_node.nodes_of_class(klass, skip_klass) + + return + + for child_node in self.get_children(): + if isinstance(child_node, skip_klass): + continue + yield from child_node.nodes_of_class(klass, skip_klass) + + @decorators.cached + def _get_assign_nodes(self): + return [] + + def _get_name_nodes(self): + for child_node in self.get_children(): + yield from child_node._get_name_nodes() + + def _get_return_nodes_skip_functions(self): + yield from () + + def _get_yield_nodes_skip_lambdas(self): + yield from () + + def _infer_name(self, frame, name): + # overridden for ImportFrom, Import, Global, TryExcept and Arguments + pass + + def _infer(self, context=None): + """we don't know how to resolve a statement by default""" + # this method is overridden by most concrete classes + raise exceptions.InferenceError( + "No inference function for {node!r}.", node=self, context=context + ) + + def inferred(self): + """Get a list of the inferred values. + + .. seealso:: :ref:`inference` + + :returns: The inferred values. + :rtype: list + """ + return list(self.infer()) + + def instantiate_class(self): + """Instantiate an instance of the defined class. + + .. note:: + + On anything other than a :class:`ClassDef` this will return self. + + :returns: An instance of the defined class. + :rtype: object + """ + return self + + def has_base(self, node): + """Check if this node inherits from the given type. + + :param node: The node defining the base to look for. + Usually this is a :class:`Name` node. + :type node: NodeNG + """ + return False + + def callable(self): + """Whether this node defines something that is callable. + + :returns: True if this defines something that is callable, + False otherwise. + :rtype: bool + """ + return False + + def eq(self, value): + return False + + def as_string(self): + """Get the source code that this node represents. + + :returns: The source code. + :rtype: str + """ + return as_string.to_code(self) + + def repr_tree( + self, + ids=False, + include_linenos=False, + ast_state=False, + indent=" ", + max_depth=0, + max_width=80, + ): + """Get a string representation of the AST from this node. + + :param ids: If true, includes the ids with the node type names. + :type ids: bool + + :param include_linenos: If true, includes the line numbers and + column offsets. + :type include_linenos: bool + + :param ast_state: If true, includes information derived from + the whole AST like local and global variables. + :type ast_state: bool + + :param indent: A string to use to indent the output string. + :type indent: str + + :param max_depth: If set to a positive integer, won't return + nodes deeper than max_depth in the string. + :type max_depth: int + + :param max_width: Attempt to format the output string to stay + within this number of characters, but can exceed it under some + circumstances. Only positive integer values are valid, the default is 80. + :type max_width: int + + :returns: The string representation of the AST. + :rtype: str + """ + # pylint: disable=too-many-statements + @_singledispatch + def _repr_tree(node, result, done, cur_indent="", depth=1): + """Outputs a representation of a non-tuple/list, non-node that's + contained within an AST, including strings. + """ + lines = pprint.pformat( + node, width=max(max_width - len(cur_indent), 1) + ).splitlines(True) + result.append(lines[0]) + result.extend([cur_indent + line for line in lines[1:]]) + return len(lines) != 1 + + # pylint: disable=unused-variable; doesn't understand singledispatch + @_repr_tree.register(tuple) + @_repr_tree.register(list) + def _repr_seq(node, result, done, cur_indent="", depth=1): + """Outputs a representation of a sequence that's contained within an AST.""" + cur_indent += indent + result.append("[") + if not node: + broken = False + elif len(node) == 1: + broken = _repr_tree(node[0], result, done, cur_indent, depth) + elif len(node) == 2: + broken = _repr_tree(node[0], result, done, cur_indent, depth) + if not broken: + result.append(", ") + else: + result.append(",\n") + result.append(cur_indent) + broken = _repr_tree(node[1], result, done, cur_indent, depth) or broken + else: + result.append("\n") + result.append(cur_indent) + for child in node[:-1]: + _repr_tree(child, result, done, cur_indent, depth) + result.append(",\n") + result.append(cur_indent) + _repr_tree(node[-1], result, done, cur_indent, depth) + broken = True + result.append("]") + return broken + + # pylint: disable=unused-variable; doesn't understand singledispatch + @_repr_tree.register(NodeNG) + def _repr_node(node, result, done, cur_indent="", depth=1): + """Outputs a strings representation of an astroid node.""" + if node in done: + result.append( + indent + + " max_depth: + result.append("...") + return False + depth += 1 + cur_indent += indent + if ids: + result.append("%s<0x%x>(\n" % (type(node).__name__, id(node))) + else: + result.append("%s(" % type(node).__name__) + fields = [] + if include_linenos: + fields.extend(("lineno", "col_offset")) + fields.extend(node._other_fields) + fields.extend(node._astroid_fields) + if ast_state: + fields.extend(node._other_other_fields) + if not fields: + broken = False + elif len(fields) == 1: + result.append("%s=" % fields[0]) + broken = _repr_tree( + getattr(node, fields[0]), result, done, cur_indent, depth + ) + else: + result.append("\n") + result.append(cur_indent) + for field in fields[:-1]: + result.append("%s=" % field) + _repr_tree(getattr(node, field), result, done, cur_indent, depth) + result.append(",\n") + result.append(cur_indent) + result.append("%s=" % fields[-1]) + _repr_tree(getattr(node, fields[-1]), result, done, cur_indent, depth) + broken = True + result.append(")") + return broken + + result = [] + _repr_tree(self, result, set()) + return "".join(result) + + def bool_value(self): + """Determine the boolean value of this node. + + The boolean value of a node can have three + possible values: + + * False: For instance, empty data structures, + False, empty strings, instances which return + explicitly False from the __nonzero__ / __bool__ + method. + * True: Most of constructs are True by default: + classes, functions, modules etc + * Uninferable: The inference engine is uncertain of the + node's value. + + :returns: The boolean value of this node. + :rtype: bool or Uninferable + """ + return util.Uninferable + + def op_precedence(self): + # Look up by class name or default to highest precedence + return OP_PRECEDENCE.get(self.__class__.__name__, len(OP_PRECEDENCE)) + + def op_left_associative(self): + # Everything is left associative except `**` and IfExp + return True + + +class Statement(NodeNG): + """Statement node adding a few attributes""" + + is_statement = True + """Whether this node indicates a statement. + + :type: bool + """ + + def next_sibling(self): + """The next sibling statement node. + + :returns: The next sibling statement node. + :rtype: NodeNG or None + """ + stmts = self.parent.child_sequence(self) + index = stmts.index(self) + try: + return stmts[index + 1] + except IndexError: + pass + + def previous_sibling(self): + """The previous sibling statement. + + :returns: The previous sibling statement node. + :rtype: NodeNG or None + """ + stmts = self.parent.child_sequence(self) + index = stmts.index(self) + if index >= 1: + return stmts[index - 1] + return None + + +class _BaseContainer( + mixins.ParentAssignTypeMixin, NodeNG, bases.Instance, metaclass=abc.ABCMeta +): + """Base class for Set, FrozenSet, Tuple and List.""" + + _astroid_fields = ("elts",) + + def __init__(self, lineno=None, col_offset=None, parent=None): + """ + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.elts = [] + """The elements in the node. + + :type: list(NodeNG) + """ + + super(_BaseContainer, self).__init__(lineno, col_offset, parent) + + def postinit(self, elts): + """Do some setup after initialisation. + + :param elts: The list of elements the that node contains. + :type elts: list(NodeNG) + """ + self.elts = elts + + @classmethod + def from_elements(cls, elts=None): + """Create a node of this type from the given list of elements. + + :param elts: The list of elements that the node should contain. + :type elts: list(NodeNG) + + :returns: A new node containing the given elements. + :rtype: NodeNG + """ + node = cls() + if elts is None: + node.elts = [] + else: + node.elts = [const_factory(e) if _is_const(e) else e for e in elts] + return node + + def itered(self): + """An iterator over the elements this node contains. + + :returns: The contents of this node. + :rtype: iterable(NodeNG) + """ + return self.elts + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + :rtype: bool or Uninferable + """ + return bool(self.elts) + + @abc.abstractmethod + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + + def get_children(self): + yield from self.elts + + +class LookupMixIn: + """Mixin to look up a name in the right scope.""" + + @lru_cache(maxsize=None) + def lookup(self, name): + """Lookup where the given variable is assigned. + + The lookup starts from self's scope. If self is not a frame itself + and the name is found in the inner frame locals, statements will be + filtered to remove ignorable statements according to self's location. + + :param name: The name of the variable to find assignments for. + :type name: str + + :returns: The scope node and the list of assignments associated to the + given name according to the scope where it has been found (locals, + globals or builtin). + :rtype: tuple(str, list(NodeNG)) + """ + return self.scope().scope_lookup(self, name) + + def ilookup(self, name): + """Lookup the inferred values of the given variable. + + :param name: The variable name to find values for. + :type name: str + + :returns: The inferred values of the statements returned from + :meth:`lookup`. + :rtype: iterable + """ + frame, stmts = self.lookup(name) + context = contextmod.InferenceContext() + return bases._infer_stmts(stmts, context, frame) + + def _get_filtered_node_statements(self, nodes): + statements = [(node, node.statement()) for node in nodes] + # Next we check if we have ExceptHandlers that are parent + # of the underlying variable, in which case the last one survives + if len(statements) > 1 and all( + isinstance(stmt, ExceptHandler) for _, stmt in statements + ): + statements = [ + (node, stmt) for node, stmt in statements if stmt.parent_of(self) + ] + return statements + + def _filter_stmts(self, stmts, frame, offset): + """Filter the given list of statements to remove ignorable statements. + + If self is not a frame itself and the name is found in the inner + frame locals, statements will be filtered to remove ignorable + statements according to self's location. + + :param stmts: The statements to filter. + :type stmts: list(NodeNG) + + :param frame: The frame that all of the given statements belong to. + :type frame: NodeNG + + :param offset: The line offset to filter statements up to. + :type offset: int + + :returns: The filtered statements. + :rtype: list(NodeNG) + """ + # if offset == -1, my actual frame is not the inner frame but its parent + # + # class A(B): pass + # + # we need this to resolve B correctly + if offset == -1: + myframe = self.frame().parent.frame() + else: + myframe = self.frame() + # If the frame of this node is the same as the statement + # of this node, then the node is part of a class or + # a function definition and the frame of this node should be the + # the upper frame, not the frame of the definition. + # For more information why this is important, + # see Pylint issue #295. + # For example, for 'b', the statement is the same + # as the frame / scope: + # + # def test(b=1): + # ... + + if self.statement() is myframe and myframe.parent: + myframe = myframe.parent.frame() + mystmt = self.statement() + # line filtering if we are in the same frame + # + # take care node may be missing lineno information (this is the case for + # nodes inserted for living objects) + if myframe is frame and mystmt.fromlineno is not None: + assert mystmt.fromlineno is not None, mystmt + mylineno = mystmt.fromlineno + offset + else: + # disabling lineno filtering + mylineno = 0 + + _stmts = [] + _stmt_parents = [] + statements = self._get_filtered_node_statements(stmts) + + for node, stmt in statements: + # line filtering is on and we have reached our location, break + if stmt.fromlineno > mylineno > 0: + break + # Ignore decorators with the same name as the + # decorated function + # Fixes issue #375 + if mystmt is stmt and is_from_decorator(self): + continue + assert hasattr(node, "assign_type"), ( + node, + node.scope(), + node.scope().locals, + ) + assign_type = node.assign_type() + if node.has_base(self): + break + + _stmts, done = assign_type._get_filtered_stmts(self, node, _stmts, mystmt) + if done: + break + + optional_assign = assign_type.optional_assign + if optional_assign and assign_type.parent_of(self): + # we are inside a loop, loop var assignment is hiding previous + # assignment + _stmts = [node] + _stmt_parents = [stmt.parent] + continue + + if isinstance(assign_type, NamedExpr): + _stmts = [node] + continue + + # XXX comment various branches below!!! + try: + pindex = _stmt_parents.index(stmt.parent) + except ValueError: + pass + else: + # we got a parent index, this means the currently visited node + # is at the same block level as a previously visited node + if _stmts[pindex].assign_type().parent_of(assign_type): + # both statements are not at the same block level + continue + # if currently visited node is following previously considered + # assignment and both are not exclusive, we can drop the + # previous one. For instance in the following code :: + # + # if a: + # x = 1 + # else: + # x = 2 + # print x + # + # we can't remove neither x = 1 nor x = 2 when looking for 'x' + # of 'print x'; while in the following :: + # + # x = 1 + # x = 2 + # print x + # + # we can remove x = 1 when we see x = 2 + # + # moreover, on loop assignment types, assignment won't + # necessarily be done if the loop has no iteration, so we don't + # want to clear previous assignments if any (hence the test on + # optional_assign) + if not (optional_assign or are_exclusive(_stmts[pindex], node)): + if ( + # In case of partial function node, if the statement is different + # from the origin function then it can be deleted otherwise it should + # remain to be able to correctly infer the call to origin function. + not node.is_function + or node.qname() != "PartialFunction" + or node.name != _stmts[pindex].name + ): + del _stmt_parents[pindex] + del _stmts[pindex] + if isinstance(node, AssignName): + if not optional_assign and stmt.parent is mystmt.parent: + _stmts = [] + _stmt_parents = [] + elif isinstance(node, DelName): + _stmts = [] + _stmt_parents = [] + continue + if not are_exclusive(self, node): + _stmts.append(node) + _stmt_parents.append(stmt.parent) + return _stmts + + +# Name classes + + +class AssignName( + mixins.NoChildrenMixin, LookupMixIn, mixins.ParentAssignTypeMixin, NodeNG +): + """Variation of :class:`ast.Assign` representing assignment to a name. + + An :class:`AssignName` is the name of something that is assigned to. + This includes variables defined in a function signature or in a loop. + + >>> node = astroid.extract_node('variable = range(10)') + >>> node + + >>> list(node.get_children()) + [, ] + >>> list(node.get_children())[0].as_string() + 'variable' + """ + + _other_fields = ("name",) + + def __init__(self, name=None, lineno=None, col_offset=None, parent=None): + """ + :param name: The name that is assigned to. + :type name: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.name = name + """The name that is assigned to. + + :type: str or None + """ + + super(AssignName, self).__init__(lineno, col_offset, parent) + + +class DelName( + mixins.NoChildrenMixin, LookupMixIn, mixins.ParentAssignTypeMixin, NodeNG +): + """Variation of :class:`ast.Delete` representing deletion of a name. + + A :class:`DelName` is the name of something that is deleted. + + >>> node = astroid.extract_node("del variable #@") + >>> list(node.get_children()) + [] + >>> list(node.get_children())[0].as_string() + 'variable' + """ + + _other_fields = ("name",) + + def __init__(self, name=None, lineno=None, col_offset=None, parent=None): + """ + :param name: The name that is being deleted. + :type name: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.name = name + """The name that is being deleted. + + :type: str or None + """ + + super(DelName, self).__init__(lineno, col_offset, parent) + + +class Name(mixins.NoChildrenMixin, LookupMixIn, NodeNG): + """Class representing an :class:`ast.Name` node. + + A :class:`Name` node is something that is named, but not covered by + :class:`AssignName` or :class:`DelName`. + + >>> node = astroid.extract_node('range(10)') + >>> node + + >>> list(node.get_children()) + [, ] + >>> list(node.get_children())[0].as_string() + 'range' + """ + + _other_fields = ("name",) + + def __init__(self, name=None, lineno=None, col_offset=None, parent=None): + """ + :param name: The name that this node refers to. + :type name: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.name = name + """The name that this node refers to. + + :type: str or None + """ + + super(Name, self).__init__(lineno, col_offset, parent) + + def _get_name_nodes(self): + yield self + + for child_node in self.get_children(): + yield from child_node._get_name_nodes() + + +class Arguments(mixins.AssignTypeMixin, NodeNG): + """Class representing an :class:`ast.arguments` node. + + An :class:`Arguments` node represents that arguments in a + function definition. + + >>> node = astroid.extract_node('def foo(bar): pass') + >>> node + + >>> node.args + + """ + + # Python 3.4+ uses a different approach regarding annotations, + # each argument is a new class, _ast.arg, which exposes an + # 'annotation' attribute. In astroid though, arguments are exposed + # as is in the Arguments node and the only way to expose annotations + # is by using something similar with Python 3.3: + # - we expose 'varargannotation' and 'kwargannotation' of annotations + # of varargs and kwargs. + # - we expose 'annotation', a list with annotations for + # for each normal argument. If an argument doesn't have an + # annotation, its value will be None. + + _astroid_fields = ( + "args", + "defaults", + "kwonlyargs", + "posonlyargs", + "kw_defaults", + "annotations", + "varargannotation", + "kwargannotation", + "kwonlyargs_annotations", + "type_comment_args", + ) + varargannotation = None + """The type annotation for the variable length arguments. + + :type: NodeNG + """ + kwargannotation = None + """The type annotation for the variable length keyword arguments. + + :type: NodeNG + """ + + _other_fields = ("vararg", "kwarg") + + def __init__(self, vararg=None, kwarg=None, parent=None): + """ + :param vararg: The name of the variable length arguments. + :type vararg: str or None + + :param kwarg: The name of the variable length keyword arguments. + :type kwarg: str or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + super(Arguments, self).__init__(parent=parent) + self.vararg = vararg + """The name of the variable length arguments. + + :type: str or None + """ + + self.kwarg = kwarg + """The name of the variable length keyword arguments. + + :type: str or None + """ + + self.args = [] + """The names of the required arguments. + + :type: list(AssignName) + """ + + self.defaults = [] + """The default values for arguments that can be passed positionally. + + :type: list(NodeNG) + """ + + self.kwonlyargs = [] + """The keyword arguments that cannot be passed positionally. + + :type: list(AssignName) + """ + + self.posonlyargs = [] + """The arguments that can only be passed positionally. + + :type: list(AssignName) + """ + + self.kw_defaults = [] + """The default values for keyword arguments that cannot be passed positionally. + + :type: list(NodeNG) + """ + + self.annotations = [] + """The type annotations of arguments that can be passed positionally. + + :type: list(NodeNG) + """ + + self.posonlyargs_annotations = [] + """The type annotations of arguments that can only be passed positionally. + + :type: list(NodeNG) + """ + + self.kwonlyargs_annotations = [] + """The type annotations of arguments that cannot be passed positionally. + + :type: list(NodeNG) + """ + + self.type_comment_args = [] + """The type annotation, passed by a type comment, of each argument. + + If an argument does not have a type comment, + the value for that argument will be None. + + :type: list(NodeNG or None) + """ + + # pylint: disable=too-many-arguments + def postinit( + self, + args, + defaults, + kwonlyargs, + kw_defaults, + annotations, + posonlyargs=None, + kwonlyargs_annotations=None, + posonlyargs_annotations=None, + varargannotation=None, + kwargannotation=None, + type_comment_args=None, + ): + """Do some setup after initialisation. + + :param args: The names of the required arguments. + :type args: list(AssignName) + + :param defaults: The default values for arguments that can be passed + positionally. + :type defaults: list(NodeNG) + + :param kwonlyargs: The keyword arguments that cannot be passed + positionally. + :type kwonlyargs: list(AssignName) + + :param posonlyargs: The arguments that can only be passed + positionally. + :type kwonlyargs: list(AssignName) + + :param kw_defaults: The default values for keyword arguments that + cannot be passed positionally. + :type kw_defaults: list(NodeNG) + + :param annotations: The type annotations of arguments that can be + passed positionally. + :type annotations: list(NodeNG) + + :param kwonlyargs_annotations: The type annotations of arguments that + cannot be passed positionally. This should always be passed in + Python 3. + :type kwonlyargs_annotations: list(NodeNG) + + :param posonlyargs_annotations: The type annotations of arguments that + can only be passed positionally. This should always be passed in + Python 3. + :type posonlyargs_annotations: list(NodeNG) + + :param varargannotation: The type annotation for the variable length + arguments. + :type varargannotation: NodeNG + + :param kwargannotation: The type annotation for the variable length + keyword arguments. + :type kwargannotation: NodeNG + + :param type_comment_args: The type annotation, + passed by a type comment, of each argument. + :type type_comment_args: list(NodeNG or None) + """ + self.args = args + self.defaults = defaults + self.kwonlyargs = kwonlyargs + self.posonlyargs = posonlyargs + self.kw_defaults = kw_defaults + self.annotations = annotations + self.kwonlyargs_annotations = kwonlyargs_annotations + self.posonlyargs_annotations = posonlyargs_annotations + self.varargannotation = varargannotation + self.kwargannotation = kwargannotation + self.type_comment_args = type_comment_args + + # pylint: disable=too-many-arguments + + def _infer_name(self, frame, name): + if self.parent is frame: + return name + return None + + @decorators.cachedproperty + def fromlineno(self): + """The first line that this node appears on in the source code. + + :type: int or None + """ + lineno = super(Arguments, self).fromlineno + return max(lineno, self.parent.fromlineno or 0) + + def format_args(self): + """Get the arguments formatted as string. + + :returns: The formatted arguments. + :rtype: str + """ + result = [] + positional_only_defaults = [] + positional_or_keyword_defaults = self.defaults + if self.defaults: + args = self.args or [] + positional_or_keyword_defaults = self.defaults[-len(args) :] + positional_only_defaults = self.defaults[: len(self.defaults) - len(args)] + + if self.posonlyargs: + result.append(_format_args(self.posonlyargs, positional_only_defaults)) + result.append("/") + if self.args: + result.append( + _format_args( + self.args, + positional_or_keyword_defaults, + getattr(self, "annotations", None), + ) + ) + if self.vararg: + result.append("*%s" % self.vararg) + if self.kwonlyargs: + if not self.vararg: + result.append("*") + result.append( + _format_args( + self.kwonlyargs, self.kw_defaults, self.kwonlyargs_annotations + ) + ) + if self.kwarg: + result.append("**%s" % self.kwarg) + return ", ".join(result) + + def default_value(self, argname): + """Get the default value for an argument. + + :param argname: The name of the argument to get the default value for. + :type argname: str + + :raises NoDefault: If there is no default value defined for the + given argument. + """ + args = list(itertools.chain((self.posonlyargs or ()), self.args or ())) + index = _find_arg(argname, args)[0] + if index is not None: + idx = index - (len(args) - len(self.defaults)) + if idx >= 0: + return self.defaults[idx] + index = _find_arg(argname, self.kwonlyargs)[0] + if index is not None and self.kw_defaults[index] is not None: + return self.kw_defaults[index] + raise exceptions.NoDefault(func=self.parent, name=argname) + + def is_argument(self, name): + """Check if the given name is defined in the arguments. + + :param name: The name to check for. + :type name: str + + :returns: True if the given name is defined in the arguments, + False otherwise. + :rtype: bool + """ + if name == self.vararg: + return True + if name == self.kwarg: + return True + return ( + self.find_argname(name, rec=True)[1] is not None + or self.kwonlyargs + and _find_arg(name, self.kwonlyargs, rec=True)[1] is not None + ) + + def find_argname(self, argname, rec=False): + """Get the index and :class:`AssignName` node for given name. + + :param argname: The name of the argument to search for. + :type argname: str + + :param rec: Whether or not to include arguments in unpacked tuples + in the search. + :type rec: bool + + :returns: The index and node for the argument. + :rtype: tuple(str or None, AssignName or None) + """ + if ( + self.args or self.posonlyargs + ): # self.args may be None in some cases (builtin function) + arguments = itertools.chain(self.posonlyargs or (), self.args or ()) + return _find_arg(argname, arguments, rec) + return None, None + + def get_children(self): + yield from self.posonlyargs or () + yield from self.args or () + + yield from self.defaults + yield from self.kwonlyargs + + for elt in self.kw_defaults: + if elt is not None: + yield elt + + for elt in self.annotations: + if elt is not None: + yield elt + + if self.varargannotation is not None: + yield self.varargannotation + + if self.kwargannotation is not None: + yield self.kwargannotation + + for elt in self.kwonlyargs_annotations: + if elt is not None: + yield elt + + +def _find_arg(argname, args, rec=False): + for i, arg in enumerate(args): + if isinstance(arg, Tuple): + if rec: + found = _find_arg(argname, arg.elts) + if found[0] is not None: + return found + elif arg.name == argname: + return i, arg + return None, None + + +def _format_args(args, defaults=None, annotations=None): + values = [] + if args is None: + return "" + if annotations is None: + annotations = [] + if defaults is not None: + default_offset = len(args) - len(defaults) + packed = itertools.zip_longest(args, annotations) + for i, (arg, annotation) in enumerate(packed): + if isinstance(arg, Tuple): + values.append("(%s)" % _format_args(arg.elts)) + else: + argname = arg.name + default_sep = "=" + if annotation is not None: + argname += ": " + annotation.as_string() + default_sep = " = " + values.append(argname) + + if defaults is not None and i >= default_offset: + if defaults[i - default_offset] is not None: + values[-1] += default_sep + defaults[i - default_offset].as_string() + return ", ".join(values) + + +class AssignAttr(mixins.ParentAssignTypeMixin, NodeNG): + """Variation of :class:`ast.Assign` representing assignment to an attribute. + + >>> node = astroid.extract_node('self.attribute = range(10)') + >>> node + + >>> list(node.get_children()) + [, ] + >>> list(node.get_children())[0].as_string() + 'self.attribute' + """ + + _astroid_fields = ("expr",) + _other_fields = ("attrname",) + expr = None + """What has the attribute that is being assigned to. + + :type: NodeNG or None + """ + + def __init__(self, attrname=None, lineno=None, col_offset=None, parent=None): + """ + :param attrname: The name of the attribute being assigned to. + :type attrname: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.attrname = attrname + """The name of the attribute being assigned to. + + :type: str or None + """ + + super(AssignAttr, self).__init__(lineno, col_offset, parent) + + def postinit(self, expr=None): + """Do some setup after initialisation. + + :param expr: What has the attribute that is being assigned to. + :type expr: NodeNG or None + """ + self.expr = expr + + def get_children(self): + yield self.expr + + +class Assert(Statement): + """Class representing an :class:`ast.Assert` node. + + An :class:`Assert` node represents an assert statement. + + >>> node = astroid.extract_node('assert len(things) == 10, "Not enough things"') + >>> node + + """ + + _astroid_fields = ("test", "fail") + test = None + """The test that passes or fails the assertion. + + :type: NodeNG or None + """ + fail = None + """The message shown when the assertion fails. + + :type: NodeNG or None + """ + + def postinit(self, test=None, fail=None): + """Do some setup after initialisation. + + :param test: The test that passes or fails the assertion. + :type test: NodeNG or None + + :param fail: The message shown when the assertion fails. + :type fail: NodeNG or None + """ + self.fail = fail + self.test = test + + def get_children(self): + yield self.test + + if self.fail is not None: + yield self.fail + + +class Assign(mixins.AssignTypeMixin, Statement): + """Class representing an :class:`ast.Assign` node. + + An :class:`Assign` is a statement where something is explicitly + asssigned to. + + >>> node = astroid.extract_node('variable = range(10)') + >>> node + + """ + + _astroid_fields = ("targets", "value") + _other_other_fields = ("type_annotation",) + targets = None + """What is being assigned to. + + :type: list(NodeNG) or None + """ + value = None + """The value being assigned to the variables. + + :type: NodeNG or None + """ + type_annotation = None + """If present, this will contain the type annotation passed by a type comment + + :type: NodeNG or None + """ + + def postinit(self, targets=None, value=None, type_annotation=None): + """Do some setup after initialisation. + + :param targets: What is being assigned to. + :type targets: list(NodeNG) or None + + :param value: The value being assigned to the variables. + :type: NodeNG or None + """ + self.targets = targets + self.value = value + self.type_annotation = type_annotation + + def get_children(self): + yield from self.targets + + yield self.value + + @decorators.cached + def _get_assign_nodes(self): + return [self] + list(self.value._get_assign_nodes()) + + def _get_yield_nodes_skip_lambdas(self): + yield from self.value._get_yield_nodes_skip_lambdas() + + +class AnnAssign(mixins.AssignTypeMixin, Statement): + """Class representing an :class:`ast.AnnAssign` node. + + An :class:`AnnAssign` is an assignment with a type annotation. + + >>> node = astroid.extract_node('variable: List[int] = range(10)') + >>> node + + """ + + _astroid_fields = ("target", "annotation", "value") + _other_fields = ("simple",) + target = None + """What is being assigned to. + + :type: NodeNG or None + """ + annotation = None + """The type annotation of what is being assigned to. + + :type: NodeNG + """ + value = None + """The value being assigned to the variables. + + :type: NodeNG or None + """ + simple = None + """Whether :attr:`target` is a pure name or a complex statement. + + :type: int + """ + + def postinit(self, target, annotation, simple, value=None): + """Do some setup after initialisation. + + :param target: What is being assigned to. + :type target: NodeNG + + :param annotation: The type annotation of what is being assigned to. + :type: NodeNG + + :param simple: Whether :attr:`target` is a pure name + or a complex statement. + :type simple: int + + :param value: The value being assigned to the variables. + :type: NodeNG or None + """ + self.target = target + self.annotation = annotation + self.value = value + self.simple = simple + + def get_children(self): + yield self.target + yield self.annotation + + if self.value is not None: + yield self.value + + +class AugAssign(mixins.AssignTypeMixin, Statement): + """Class representing an :class:`ast.AugAssign` node. + + An :class:`AugAssign` is an assignment paired with an operator. + + >>> node = astroid.extract_node('variable += 1') + >>> node + + """ + + _astroid_fields = ("target", "value") + _other_fields = ("op",) + target = None + """What is being assigned to. + + :type: NodeNG or None + """ + value = None + """The value being assigned to the variable. + + :type: NodeNG or None + """ + + def __init__(self, op=None, lineno=None, col_offset=None, parent=None): + """ + :param op: The operator that is being combined with the assignment. + This includes the equals sign. + :type op: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.op = op + """The operator that is being combined with the assignment. + + This includes the equals sign. + + :type: str or None + """ + + super(AugAssign, self).__init__(lineno, col_offset, parent) + + def postinit(self, target=None, value=None): + """Do some setup after initialisation. + + :param target: What is being assigned to. + :type target: NodeNG or None + + :param value: The value being assigned to the variable. + :type: NodeNG or None + """ + self.target = target + self.value = value + + # This is set by inference.py + def _infer_augassign(self, context=None): + raise NotImplementedError + + def type_errors(self, context=None): + """Get a list of type errors which can occur during inference. + + Each TypeError is represented by a :class:`BadBinaryOperationMessage` , + which holds the original exception. + + :returns: The list of possible type errors. + :rtype: list(BadBinaryOperationMessage) + """ + try: + results = self._infer_augassign(context=context) + return [ + result + for result in results + if isinstance(result, util.BadBinaryOperationMessage) + ] + except exceptions.InferenceError: + return [] + + def get_children(self): + yield self.target + yield self.value + + +class Repr(NodeNG): + """Class representing an :class:`ast.Repr` node. + + A :class:`Repr` node represents the backtick syntax, + which is a deprecated alias for :func:`repr` removed in Python 3. + + >>> node = astroid.extract_node('`variable`') + >>> node + + """ + + _astroid_fields = ("value",) + value = None + """What is having :func:`repr` called on it. + + :type: NodeNG or None + """ + + def postinit(self, value=None): + """Do some setup after initialisation. + + :param value: What is having :func:`repr` called on it. + :type value: NodeNG or None + """ + self.value = value + + +class BinOp(NodeNG): + """Class representing an :class:`ast.BinOp` node. + + A :class:`BinOp` node is an application of a binary operator. + + >>> node = astroid.extract_node('a + b') + >>> node + + """ + + _astroid_fields = ("left", "right") + _other_fields = ("op",) + left = None + """What is being applied to the operator on the left side. + + :type: NodeNG or None + """ + right = None + """What is being applied to the operator on the right side. + + :type: NodeNG or None + """ + + def __init__(self, op=None, lineno=None, col_offset=None, parent=None): + """ + :param op: The operator. + :type: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.op = op + """The operator. + + :type: str or None + """ + + super(BinOp, self).__init__(lineno, col_offset, parent) + + def postinit(self, left=None, right=None): + """Do some setup after initialisation. + + :param left: What is being applied to the operator on the left side. + :type left: NodeNG or None + + :param right: What is being applied to the operator on the right side. + :type right: NodeNG or None + """ + self.left = left + self.right = right + + # This is set by inference.py + def _infer_binop(self, context=None): + raise NotImplementedError + + def type_errors(self, context=None): + """Get a list of type errors which can occur during inference. + + Each TypeError is represented by a :class:`BadBinaryOperationMessage`, + which holds the original exception. + + :returns: The list of possible type errors. + :rtype: list(BadBinaryOperationMessage) + """ + try: + results = self._infer_binop(context=context) + return [ + result + for result in results + if isinstance(result, util.BadBinaryOperationMessage) + ] + except exceptions.InferenceError: + return [] + + def get_children(self): + yield self.left + yield self.right + + def op_precedence(self): + return OP_PRECEDENCE[self.op] + + def op_left_associative(self): + # 2**3**4 == 2**(3**4) + return self.op != "**" + + +class BoolOp(NodeNG): + """Class representing an :class:`ast.BoolOp` node. + + A :class:`BoolOp` is an application of a boolean operator. + + >>> node = astroid.extract_node('a and b') + >>> node + + """ + + _astroid_fields = ("values",) + _other_fields = ("op",) + values = None + """The values being applied to the operator. + + :type: list(NodeNG) or None + """ + + def __init__(self, op=None, lineno=None, col_offset=None, parent=None): + """ + :param op: The operator. + :type: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.op = op + """The operator. + + :type: str or None + """ + + super(BoolOp, self).__init__(lineno, col_offset, parent) + + def postinit(self, values=None): + """Do some setup after initialisation. + + :param values: The values being applied to the operator. + :type values: list(NodeNG) or None + """ + self.values = values + + def get_children(self): + yield from self.values + + def op_precedence(self): + return OP_PRECEDENCE[self.op] + + +class Break(mixins.NoChildrenMixin, Statement): + """Class representing an :class:`ast.Break` node. + + >>> node = astroid.extract_node('break') + >>> node + + """ + + +class Call(NodeNG): + """Class representing an :class:`ast.Call` node. + + A :class:`Call` node is a call to a function, method, etc. + + >>> node = astroid.extract_node('function()') + >>> node + + """ + + _astroid_fields = ("func", "args", "keywords") + func = None + """What is being called. + + :type: NodeNG or None + """ + args = None + """The positional arguments being given to the call. + + :type: list(NodeNG) or None + """ + keywords = None + """The keyword arguments being given to the call. + + :type: list(NodeNG) or None + """ + + def postinit(self, func=None, args=None, keywords=None): + """Do some setup after initialisation. + + :param func: What is being called. + :type func: NodeNG or None + + :param args: The positional arguments being given to the call. + :type args: list(NodeNG) or None + + :param keywords: The keyword arguments being given to the call. + :type keywords: list(NodeNG) or None + """ + self.func = func + self.args = args + self.keywords = keywords + + @property + def starargs(self): + """The positional arguments that unpack something. + + :type: list(Starred) + """ + args = self.args or [] + return [arg for arg in args if isinstance(arg, Starred)] + + @property + def kwargs(self): + """The keyword arguments that unpack something. + + :type: list(Keyword) + """ + keywords = self.keywords or [] + return [keyword for keyword in keywords if keyword.arg is None] + + def get_children(self): + yield self.func + + yield from self.args + + yield from self.keywords or () + + +class Compare(NodeNG): + """Class representing an :class:`ast.Compare` node. + + A :class:`Compare` node indicates a comparison. + + >>> node = astroid.extract_node('a <= b <= c') + >>> node + + >>> node.ops + [('<=', ), ('<=', )] + """ + + _astroid_fields = ("left", "ops") + left = None + """The value at the left being applied to a comparison operator. + + :type: NodeNG or None + """ + ops = None + """The remainder of the operators and their relevant right hand value. + + :type: list(tuple(str, NodeNG)) or None + """ + + def postinit(self, left=None, ops=None): + """Do some setup after initialisation. + + :param left: The value at the left being applied to a comparison + operator. + :type left: NodeNG or None + + :param ops: The remainder of the operators + and their relevant right hand value. + :type ops: list(tuple(str, NodeNG)) or None + """ + self.left = left + self.ops = ops + + def get_children(self): + """Get the child nodes below this node. + + Overridden to handle the tuple fields and skip returning the operator + strings. + + :returns: The children. + :rtype: iterable(NodeNG) + """ + yield self.left + for _, comparator in self.ops: + yield comparator # we don't want the 'op' + + def last_child(self): + """An optimized version of list(get_children())[-1] + + :returns: The last child. + :rtype: NodeNG + """ + # XXX maybe if self.ops: + return self.ops[-1][1] + # return self.left + + +class Comprehension(NodeNG): + """Class representing an :class:`ast.comprehension` node. + + A :class:`Comprehension` indicates the loop inside any type of + comprehension including generator expressions. + + >>> node = astroid.extract_node('[x for x in some_values]') + >>> list(node.get_children()) + [, ] + >>> list(node.get_children())[1].as_string() + 'for x in some_values' + """ + + _astroid_fields = ("target", "iter", "ifs") + _other_fields = ("is_async",) + target = None + """What is assigned to by the comprehension. + + :type: NodeNG or None + """ + iter = None + """What is iterated over by the comprehension. + + :type: NodeNG or None + """ + ifs = None + """The contents of any if statements that filter the comprehension. + + :type: list(NodeNG) or None + """ + is_async = None + """Whether this is an asynchronous comprehension or not. + + :type: bool or None + """ + + def __init__(self, parent=None): + """ + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + super(Comprehension, self).__init__() + self.parent = parent + + # pylint: disable=redefined-builtin; same name as builtin ast module. + def postinit(self, target=None, iter=None, ifs=None, is_async=None): + """Do some setup after initialisation. + + :param target: What is assigned to by the comprehension. + :type target: NodeNG or None + + :param iter: What is iterated over by the comprehension. + :type iter: NodeNG or None + + :param ifs: The contents of any if statements that filter + the comprehension. + :type ifs: list(NodeNG) or None + + :param is_async: Whether this is an asynchronous comprehension or not. + :type: bool or None + """ + self.target = target + self.iter = iter + self.ifs = ifs + self.is_async = is_async + + optional_assign = True + """Whether this node optionally assigns a variable. + + :type: bool + """ + + def assign_type(self): + """The type of assignment that this node performs. + + :returns: The assignment type. + :rtype: NodeNG + """ + return self + + def _get_filtered_stmts(self, lookup_node, node, stmts, mystmt): + """method used in filter_stmts""" + if self is mystmt: + if isinstance(lookup_node, (Const, Name)): + return [lookup_node], True + + elif self.statement() is mystmt: + # original node's statement is the assignment, only keeps + # current node (gen exp, list comp) + + return [node], True + + return stmts, False + + def get_children(self): + yield self.target + yield self.iter + + yield from self.ifs + + +class Const(mixins.NoChildrenMixin, NodeNG, bases.Instance): + """Class representing any constant including num, str, bool, None, bytes. + + >>> node = astroid.extract_node('(5, "This is a string.", True, None, b"bytes")') + >>> node + + >>> list(node.get_children()) + [, + , + , + , + ] + """ + + _other_fields = ("value",) + + def __init__(self, value, lineno=None, col_offset=None, parent=None): + """ + :param value: The value that the constant represents. + :type value: object + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.value = value + """The value that the constant represents. + + :type: object + """ + + super(Const, self).__init__(lineno, col_offset, parent) + + def __getattr__(self, name): + # This is needed because of Proxy's __getattr__ method. + # Calling object.__new__ on this class without calling + # __init__ would result in an infinite loop otherwise + # since __getattr__ is called when an attribute doesn't + # exist and self._proxied indirectly calls self.value + # and Proxy __getattr__ calls self.value + if name == "value": + raise AttributeError + return super().__getattr__(name) + + def getitem(self, index, context=None): + """Get an item from this node if subscriptable. + + :param index: The node to use as a subscript index. + :type index: Const or Slice + + :raises AstroidTypeError: When the given index cannot be used as a + subscript index, or if this node is not subscriptable. + """ + if isinstance(index, Const): + index_value = index.value + elif isinstance(index, Slice): + index_value = _infer_slice(index, context=context) + + else: + raise exceptions.AstroidTypeError( + "Could not use type {} as subscript index".format(type(index)) + ) + + try: + if isinstance(self.value, (str, bytes)): + return Const(self.value[index_value]) + except IndexError as exc: + raise exceptions.AstroidIndexError( + message="Index {index!r} out of range", + node=self, + index=index, + context=context, + ) from exc + except TypeError as exc: + raise exceptions.AstroidTypeError( + message="Type error {error!r}", node=self, index=index, context=context + ) from exc + + raise exceptions.AstroidTypeError("%r (value=%s)" % (self, self.value)) + + def has_dynamic_getattr(self): + """Check if the node has a custom __getattr__ or __getattribute__. + + :returns: True if the class has a custom + __getattr__ or __getattribute__, False otherwise. + For a :class:`Const` this is always ``False``. + :rtype: bool + """ + return False + + def itered(self): + """An iterator over the elements this node contains. + + :returns: The contents of this node. + :rtype: iterable(str) + + :raises TypeError: If this node does not represent something that is iterable. + """ + if isinstance(self.value, str): + return self.value + raise TypeError() + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + return self._proxied.qname() + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + :rtype: bool + """ + return bool(self.value) + + +class Continue(mixins.NoChildrenMixin, Statement): + """Class representing an :class:`ast.Continue` node. + + >>> node = astroid.extract_node('continue') + >>> node + + """ + + +class Decorators(NodeNG): + """A node representing a list of decorators. + + A :class:`Decorators` is the decorators that are applied to + a method or function. + + >>> node = astroid.extract_node(''' + @property + def my_property(self): + return 3 + ''') + >>> node + + >>> list(node.get_children())[0] + + """ + + _astroid_fields = ("nodes",) + nodes = None + """The decorators that this node contains. + + :type: list(Name or Call) or None + """ + + def postinit(self, nodes): + """Do some setup after initialisation. + + :param nodes: The decorators that this node contains. + :type nodes: list(Name or Call) + """ + self.nodes = nodes + + def scope(self): + """The first parent node defining a new scope. + + :returns: The first parent scope node. + :rtype: Module or FunctionDef or ClassDef or Lambda or GenExpr + """ + # skip the function node to go directly to the upper level scope + return self.parent.parent.scope() + + def get_children(self): + yield from self.nodes + + +class DelAttr(mixins.ParentAssignTypeMixin, NodeNG): + """Variation of :class:`ast.Delete` representing deletion of an attribute. + + >>> node = astroid.extract_node('del self.attr') + >>> node + + >>> list(node.get_children())[0] + + """ + + _astroid_fields = ("expr",) + _other_fields = ("attrname",) + expr = None + """The name that this node represents. + + :type: Name or None + """ + + def __init__(self, attrname=None, lineno=None, col_offset=None, parent=None): + """ + :param attrname: The name of the attribute that is being deleted. + :type attrname: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.attrname = attrname + """The name of the attribute that is being deleted. + + :type: str or None + """ + + super(DelAttr, self).__init__(lineno, col_offset, parent) + + def postinit(self, expr=None): + """Do some setup after initialisation. + + :param expr: The name that this node represents. + :type expr: Name or None + """ + self.expr = expr + + def get_children(self): + yield self.expr + + +class Delete(mixins.AssignTypeMixin, Statement): + """Class representing an :class:`ast.Delete` node. + + A :class:`Delete` is a ``del`` statement this is deleting something. + + >>> node = astroid.extract_node('del self.attr') + >>> node + + """ + + _astroid_fields = ("targets",) + targets = None + """What is being deleted. + + :type: list(NodeNG) or None + """ + + def postinit(self, targets=None): + """Do some setup after initialisation. + + :param targets: What is being deleted. + :type targets: list(NodeNG) or None + """ + self.targets = targets + + def get_children(self): + yield from self.targets + + +class Dict(NodeNG, bases.Instance): + """Class representing an :class:`ast.Dict` node. + + A :class:`Dict` is a dictionary that is created with ``{}`` syntax. + + >>> node = astroid.extract_node('{1: "1"}') + >>> node + + """ + + _astroid_fields = ("items",) + + def __init__(self, lineno=None, col_offset=None, parent=None): + """ + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.items = [] + """The key-value pairs contained in the dictionary. + + :type: list(tuple(NodeNG, NodeNG)) + """ + + super(Dict, self).__init__(lineno, col_offset, parent) + + def postinit(self, items): + """Do some setup after initialisation. + + :param items: The key-value pairs contained in the dictionary. + :type items: list(tuple(NodeNG, NodeNG)) + """ + self.items = items + + @classmethod + def from_elements(cls, items=None): + """Create a :class:`Dict` of constants from a live dictionary. + + :param items: The items to store in the node. + :type items: dict + + :returns: The created dictionary node. + :rtype: Dict + """ + node = cls() + if items is None: + node.items = [] + else: + node.items = [ + (const_factory(k), const_factory(v) if _is_const(v) else v) + for k, v in items.items() + # The keys need to be constants + if _is_const(k) + ] + return node + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + return "%s.dict" % BUILTINS + + def get_children(self): + """Get the key and value nodes below this node. + + Children are returned in the order that they are defined in the source + code, key first then the value. + + :returns: The children. + :rtype: iterable(NodeNG) + """ + for key, value in self.items: + yield key + yield value + + def last_child(self): + """An optimized version of list(get_children())[-1] + + :returns: The last child, or None if no children exist. + :rtype: NodeNG or None + """ + if self.items: + return self.items[-1][1] + return None + + def itered(self): + """An iterator over the keys this node contains. + + :returns: The keys of this node. + :rtype: iterable(NodeNG) + """ + return [key for (key, _) in self.items] + + def getitem(self, index, context=None): + """Get an item from this node. + + :param index: The node to use as a subscript index. + :type index: Const or Slice + + :raises AstroidTypeError: When the given index cannot be used as a + subscript index, or if this node is not subscriptable. + :raises AstroidIndexError: If the given index does not exist in the + dictionary. + """ + for key, value in self.items: + # TODO(cpopa): no support for overriding yet, {1:2, **{1: 3}}. + if isinstance(key, DictUnpack): + try: + return value.getitem(index, context) + except (exceptions.AstroidTypeError, exceptions.AstroidIndexError): + continue + for inferredkey in key.infer(context): + if inferredkey is util.Uninferable: + continue + if isinstance(inferredkey, Const) and isinstance(index, Const): + if inferredkey.value == index.value: + return value + + raise exceptions.AstroidIndexError(index) + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + :rtype: bool + """ + return bool(self.items) + + +class Expr(Statement): + """Class representing an :class:`ast.Expr` node. + + An :class:`Expr` is any expression that does not have its value used or + stored. + + >>> node = astroid.extract_node('method()') + >>> node + + >>> node.parent + + """ + + _astroid_fields = ("value",) + value = None + """What the expression does. + + :type: NodeNG or None + """ + + def postinit(self, value=None): + """Do some setup after initialisation. + + :param value: What the expression does. + :type value: NodeNG or None + """ + self.value = value + + def get_children(self): + yield self.value + + def _get_yield_nodes_skip_lambdas(self): + if not self.value.is_lambda: + yield from self.value._get_yield_nodes_skip_lambdas() + + +class Ellipsis(mixins.NoChildrenMixin, NodeNG): # pylint: disable=redefined-builtin + """Class representing an :class:`ast.Ellipsis` node. + + An :class:`Ellipsis` is the ``...`` syntax. + + >>> node = astroid.extract_node('...') + >>> node + + """ + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For an :class:`Ellipsis` this is always ``True``. + :rtype: bool + """ + return True + + +class EmptyNode(mixins.NoChildrenMixin, NodeNG): + """Holds an arbitrary object in the :attr:`LocalsDictNodeNG.locals`.""" + + object = None + + +class ExceptHandler(mixins.MultiLineBlockMixin, mixins.AssignTypeMixin, Statement): + """Class representing an :class:`ast.ExceptHandler`. node. + + An :class:`ExceptHandler` is an ``except`` block on a try-except. + + >>> node = astroid.extract_node(''' + try: + do_something() + except Exception as error: + print("Error!") + ''') + >>> node + + >>> >>> node.handlers + [] + """ + + _astroid_fields = ("type", "name", "body") + _multi_line_block_fields = ("body",) + type = None + """The types that the block handles. + + :type: Tuple or NodeNG or None + """ + name = None + """The name that the caught exception is assigned to. + + :type: AssignName or None + """ + body = None + """The contents of the block. + + :type: list(NodeNG) or None + """ + + def get_children(self): + if self.type is not None: + yield self.type + + if self.name is not None: + yield self.name + + yield from self.body + + # pylint: disable=redefined-builtin; had to use the same name as builtin ast module. + def postinit(self, type=None, name=None, body=None): + """Do some setup after initialisation. + + :param type: The types that the block handles. + :type type: Tuple or NodeNG or None + + :param name: The name that the caught exception is assigned to. + :type name: AssignName or None + + :param body:The contents of the block. + :type body: list(NodeNG) or None + """ + self.type = type + self.name = name + self.body = body + + @decorators.cachedproperty + def blockstart_tolineno(self): + """The line on which the beginning of this block ends. + + :type: int + """ + if self.name: + return self.name.tolineno + if self.type: + return self.type.tolineno + return self.lineno + + def catch(self, exceptions): # pylint: disable=redefined-outer-name + """Check if this node handles any of the given exceptions. + + If ``exceptions`` is empty, this will default to ``True``. + + :param exceptions: The name of the exceptions to check for. + :type exceptions: list(str) + """ + if self.type is None or exceptions is None: + return True + for node in self.type._get_name_nodes(): + if node.name in exceptions: + return True + return False + + +class Exec(Statement): + """Class representing the ``exec`` statement. + + >>> node = astroid.extract_node('exec "True"') + >>> node + + """ + + _astroid_fields = ("expr", "globals", "locals") + expr = None + """The expression to be executed. + + :type: NodeNG or None + """ + globals = None + """The globals dictionary to execute with. + + :type: NodeNG or None + """ + locals = None + """The locals dictionary to execute with. + + :type: NodeNG or None + """ + + # pylint: disable=redefined-builtin; had to use the same name as builtin ast module. + def postinit(self, expr=None, globals=None, locals=None): + """Do some setup after initialisation. + + :param expr: The expression to be executed. + :type expr: NodeNG or None + + :param globals:The globals dictionary to execute with. + :type globals: NodeNG or None + + :param locals: The locals dictionary to execute with. + :type locals: NodeNG or None + """ + self.expr = expr + self.globals = globals + self.locals = locals + + +class ExtSlice(NodeNG): + """Class representing an :class:`ast.ExtSlice` node. + + An :class:`ExtSlice` is a complex slice expression. + + >>> node = astroid.extract_node('l[1:3, 5]') + >>> node + + >>> node.slice + + """ + + _astroid_fields = ("dims",) + dims = None + """The simple dimensions that form the complete slice. + + :type: list(NodeNG) or None + """ + + def postinit(self, dims=None): + """Do some setup after initialisation. + + :param dims: The simple dimensions that form the complete slice. + :type dims: list(NodeNG) or None + """ + self.dims = dims + + +class For( + mixins.MultiLineBlockMixin, + mixins.BlockRangeMixIn, + mixins.AssignTypeMixin, + Statement, +): + """Class representing an :class:`ast.For` node. + + >>> node = astroid.extract_node('for thing in things: print(thing)') + >>> node + + """ + + _astroid_fields = ("target", "iter", "body", "orelse") + _other_other_fields = ("type_annotation",) + _multi_line_block_fields = ("body", "orelse") + target = None + """What the loop assigns to. + + :type: NodeNG or None + """ + iter = None + """What the loop iterates over. + + :type: NodeNG or None + """ + body = None + """The contents of the body of the loop. + + :type: list(NodeNG) or None + """ + orelse = None + """The contents of the ``else`` block of the loop. + + :type: list(NodeNG) or None + """ + type_annotation = None + """If present, this will contain the type annotation passed by a type comment + + :type: NodeNG or None + """ + + # pylint: disable=redefined-builtin; had to use the same name as builtin ast module. + def postinit( + self, target=None, iter=None, body=None, orelse=None, type_annotation=None + ): + """Do some setup after initialisation. + + :param target: What the loop assigns to. + :type target: NodeNG or None + + :param iter: What the loop iterates over. + :type iter: NodeNG or None + + :param body: The contents of the body of the loop. + :type body: list(NodeNG) or None + + :param orelse: The contents of the ``else`` block of the loop. + :type orelse: list(NodeNG) or None + """ + self.target = target + self.iter = iter + self.body = body + self.orelse = orelse + self.type_annotation = type_annotation + + optional_assign = True + """Whether this node optionally assigns a variable. + + This is always ``True`` for :class:`For` nodes. + + :type: bool + """ + + @decorators.cachedproperty + def blockstart_tolineno(self): + """The line on which the beginning of this block ends. + + :type: int + """ + return self.iter.tolineno + + def get_children(self): + yield self.target + yield self.iter + + yield from self.body + yield from self.orelse + + +class AsyncFor(For): + """Class representing an :class:`ast.AsyncFor` node. + + An :class:`AsyncFor` is an asynchronous :class:`For` built with + the ``async`` keyword. + + >>> node = astroid.extract_node(''' + async def func(things): + async for thing in things: + print(thing) + ''') + >>> node + + >>> node.body[0] + + """ + + +class Await(NodeNG): + """Class representing an :class:`ast.Await` node. + + An :class:`Await` is the ``await`` keyword. + + >>> node = astroid.extract_node(''' + async def func(things): + await other_func() + ''') + >>> node + + >>> node.body[0] + + >>> list(node.body[0].get_children())[0] + + """ + + _astroid_fields = ("value",) + value = None + """What to wait for. + + :type: NodeNG or None + """ + + def postinit(self, value=None): + """Do some setup after initialisation. + + :param value: What to wait for. + :type value: NodeNG or None + """ + self.value = value + + def get_children(self): + yield self.value + + +class ImportFrom(mixins.NoChildrenMixin, mixins.ImportFromMixin, Statement): + """Class representing an :class:`ast.ImportFrom` node. + + >>> node = astroid.extract_node('from my_package import my_module') + >>> node + + """ + + _other_fields = ("modname", "names", "level") + + def __init__( + self, fromname, names, level=0, lineno=None, col_offset=None, parent=None + ): + """ + :param fromname: The module that is being imported from. + :type fromname: str or None + + :param names: What is being imported from the module. + :type names: list(tuple(str, str or None)) + + :param level: The level of relative import. + :type level: int + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.modname = fromname + """The module that is being imported from. + + This is ``None`` for relative imports. + + :type: str or None + """ + + self.names = names + """What is being imported from the module. + + Each entry is a :class:`tuple` of the name being imported, + and the alias that the name is assigned to (if any). + + :type: list(tuple(str, str or None)) + """ + + self.level = level + """The level of relative import. + + Essentially this is the number of dots in the import. + This is always 0 for absolute imports. + + :type: int + """ + + super(ImportFrom, self).__init__(lineno, col_offset, parent) + + +class Attribute(NodeNG): + """Class representing an :class:`ast.Attribute` node.""" + + _astroid_fields = ("expr",) + _other_fields = ("attrname",) + expr = None + """The name that this node represents. + + :type: Name or None + """ + + def __init__(self, attrname=None, lineno=None, col_offset=None, parent=None): + """ + :param attrname: The name of the attribute. + :type attrname: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.attrname = attrname + """The name of the attribute. + + :type: str or None + """ + + super(Attribute, self).__init__(lineno, col_offset, parent) + + def postinit(self, expr=None): + """Do some setup after initialisation. + + :param expr: The name that this node represents. + :type expr: Name or None + """ + self.expr = expr + + def get_children(self): + yield self.expr + + +class Global(mixins.NoChildrenMixin, Statement): + """Class representing an :class:`ast.Global` node. + + >>> node = astroid.extract_node('global a_global') + >>> node + + """ + + _other_fields = ("names",) + + def __init__(self, names, lineno=None, col_offset=None, parent=None): + """ + :param names: The names being declared as global. + :type names: list(str) + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.names = names + """The names being declared as global. + + :type: list(str) + """ + + super(Global, self).__init__(lineno, col_offset, parent) + + def _infer_name(self, frame, name): + return name + + +class If(mixins.MultiLineBlockMixin, mixins.BlockRangeMixIn, Statement): + """Class representing an :class:`ast.If` node. + + >>> node = astroid.extract_node('if condition: print(True)') + >>> node + + """ + + _astroid_fields = ("test", "body", "orelse") + _multi_line_block_fields = ("body", "orelse") + test = None + """The condition that the statement tests. + + :type: NodeNG or None + """ + body = None + """The contents of the block. + + :type: list(NodeNG) or None + """ + orelse = None + """The contents of the ``else`` block. + + :type: list(NodeNG) or None + """ + + def postinit(self, test=None, body=None, orelse=None): + """Do some setup after initialisation. + + :param test: The condition that the statement tests. + :type test: NodeNG or None + + :param body: The contents of the block. + :type body: list(NodeNG) or None + + :param orelse: The contents of the ``else`` block. + :type orelse: list(NodeNG) or None + """ + self.test = test + self.body = body + self.orelse = orelse + + @decorators.cachedproperty + def blockstart_tolineno(self): + """The line on which the beginning of this block ends. + + :type: int + """ + return self.test.tolineno + + def block_range(self, lineno): + """Get a range from the given line number to where this node ends. + + :param lineno: The line number to start the range at. + :type lineno: int + + :returns: The range of line numbers that this node belongs to, + starting at the given line number. + :rtype: tuple(int, int) + """ + if lineno == self.body[0].fromlineno: + return lineno, lineno + if lineno <= self.body[-1].tolineno: + return lineno, self.body[-1].tolineno + return self._elsed_block_range(lineno, self.orelse, self.body[0].fromlineno - 1) + + def get_children(self): + yield self.test + + yield from self.body + yield from self.orelse + + def has_elif_block(self): + return len(self.orelse) == 1 and isinstance(self.orelse[0], If) + + +class IfExp(NodeNG): + """Class representing an :class:`ast.IfExp` node. + + >>> node = astroid.extract_node('value if condition else other') + >>> node + + """ + + _astroid_fields = ("test", "body", "orelse") + test = None + """The condition that the statement tests. + + :type: NodeNG or None + """ + body = None + """The contents of the block. + + :type: list(NodeNG) or None + """ + orelse = None + """The contents of the ``else`` block. + + :type: list(NodeNG) or None + """ + + def postinit(self, test=None, body=None, orelse=None): + """Do some setup after initialisation. + + :param test: The condition that the statement tests. + :type test: NodeNG or None + + :param body: The contents of the block. + :type body: list(NodeNG) or None + + :param orelse: The contents of the ``else`` block. + :type orelse: list(NodeNG) or None + """ + self.test = test + self.body = body + self.orelse = orelse + + def get_children(self): + yield self.test + yield self.body + yield self.orelse + + def op_left_associative(self): + # `1 if True else 2 if False else 3` is parsed as + # `1 if True else (2 if False else 3)` + return False + + +class Import(mixins.NoChildrenMixin, mixins.ImportFromMixin, Statement): + """Class representing an :class:`ast.Import` node. + + >>> node = astroid.extract_node('import astroid') + >>> node + + """ + + _other_fields = ("names",) + + def __init__(self, names=None, lineno=None, col_offset=None, parent=None): + """ + :param names: The names being imported. + :type names: list(tuple(str, str or None)) or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.names = names + """The names being imported. + + Each entry is a :class:`tuple` of the name being imported, + and the alias that the name is assigned to (if any). + + :type: list(tuple(str, str or None)) or None + """ + + super(Import, self).__init__(lineno, col_offset, parent) + + +class Index(NodeNG): + """Class representing an :class:`ast.Index` node. + + An :class:`Index` is a simple subscript. + + >>> node = astroid.extract_node('things[1]') + >>> node + + >>> node.slice + + """ + + _astroid_fields = ("value",) + value = None + """The value to subscript with. + + :type: NodeNG or None + """ + + def postinit(self, value=None): + """Do some setup after initialisation. + + :param value: The value to subscript with. + :type value: NodeNG or None + """ + self.value = value + + def get_children(self): + yield self.value + + +class Keyword(NodeNG): + """Class representing an :class:`ast.keyword` node. + + >>> node = astroid.extract_node('function(a_kwarg=True)') + >>> node + + >>> node.keywords + [] + """ + + _astroid_fields = ("value",) + _other_fields = ("arg",) + value = None + """The value being assigned to the keyword argument. + + :type: NodeNG or None + """ + + def __init__(self, arg=None, lineno=None, col_offset=None, parent=None): + """ + :param arg: The argument being assigned to. + :type arg: Name or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.arg = arg + """The argument being assigned to. + + :type: Name or None + """ + + super(Keyword, self).__init__(lineno, col_offset, parent) + + def postinit(self, value=None): + """Do some setup after initialisation. + + :param value: The value being assigned to the ketword argument. + :type value: NodeNG or None + """ + self.value = value + + def get_children(self): + yield self.value + + +class List(_BaseContainer): + """Class representing an :class:`ast.List` node. + + >>> node = astroid.extract_node('[1, 2, 3]') + >>> node + + """ + + _other_fields = ("ctx",) + + def __init__(self, ctx=None, lineno=None, col_offset=None, parent=None): + """ + :param ctx: Whether the list is assigned to or loaded from. + :type ctx: Context or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.ctx = ctx + """Whether the list is assigned to or loaded from. + + :type: Context or None + """ + + super(List, self).__init__(lineno, col_offset, parent) + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + return "%s.list" % BUILTINS + + def getitem(self, index, context=None): + """Get an item from this node. + + :param index: The node to use as a subscript index. + :type index: Const or Slice + """ + return _container_getitem(self, self.elts, index, context=context) + + +class Nonlocal(mixins.NoChildrenMixin, Statement): + """Class representing an :class:`ast.Nonlocal` node. + + >>> node = astroid.extract_node(''' + def function(): + nonlocal var + ''') + >>> node + + >>> node.body[0] + + """ + + _other_fields = ("names",) + + def __init__(self, names, lineno=None, col_offset=None, parent=None): + """ + :param names: The names being declared as not local. + :type names: list(str) + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.names = names + """The names being declared as not local. + + :type: list(str) + """ + + super(Nonlocal, self).__init__(lineno, col_offset, parent) + + def _infer_name(self, frame, name): + return name + + +class Pass(mixins.NoChildrenMixin, Statement): + """Class representing an :class:`ast.Pass` node. + + >>> node = astroid.extract_node('pass') + >>> node + + """ + + +class Print(Statement): + """Class representing an :class:`ast.Print` node. + + >>> node = astroid.extract_node('print "A message"') + >>> node + + """ + + _astroid_fields = ("dest", "values") + dest = None + """Where to print to. + + :type: NodeNG or None + """ + values = None + """What to print. + + :type: list(NodeNG) or None + """ + + def __init__(self, nl=None, lineno=None, col_offset=None, parent=None): + """ + :param nl: Whether to print a new line. + :type nl: bool or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.nl = nl + """Whether to print a new line. + + :type: bool or None + """ + + super(Print, self).__init__(lineno, col_offset, parent) + + def postinit(self, dest=None, values=None): + """Do some setup after initialisation. + + :param dest: Where to print to. + :type dest: NodeNG or None + + :param values: What to print. + :type values: list(NodeNG) or None + """ + self.dest = dest + self.values = values + + +class Raise(Statement): + """Class representing an :class:`ast.Raise` node. + + >>> node = astroid.extract_node('raise RuntimeError("Something bad happened!")') + >>> node + + """ + + exc = None + """What is being raised. + + :type: NodeNG or None + """ + _astroid_fields = ("exc", "cause") + cause = None + """The exception being used to raise this one. + + :type: NodeNG or None + """ + + def postinit(self, exc=None, cause=None): + """Do some setup after initialisation. + + :param exc: What is being raised. + :type exc: NodeNG or None + + :param cause: The exception being used to raise this one. + :type cause: NodeNG or None + """ + self.exc = exc + self.cause = cause + + def raises_not_implemented(self): + """Check if this node raises a :class:`NotImplementedError`. + + :returns: True if this node raises a :class:`NotImplementedError`, + False otherwise. + :rtype: bool + """ + if not self.exc: + return False + for name in self.exc._get_name_nodes(): + if name.name == "NotImplementedError": + return True + return False + + def get_children(self): + if self.exc is not None: + yield self.exc + + if self.cause is not None: + yield self.cause + + +class Return(Statement): + """Class representing an :class:`ast.Return` node. + + >>> node = astroid.extract_node('return True') + >>> node + + """ + + _astroid_fields = ("value",) + value = None + """The value being returned. + + :type: NodeNG or None + """ + + def postinit(self, value=None): + """Do some setup after initialisation. + + :param value: The value being returned. + :type value: NodeNG or None + """ + self.value = value + + def get_children(self): + if self.value is not None: + yield self.value + + def is_tuple_return(self): + return isinstance(self.value, Tuple) + + def _get_return_nodes_skip_functions(self): + yield self + + +class Set(_BaseContainer): + """Class representing an :class:`ast.Set` node. + + >>> node = astroid.extract_node('{1, 2, 3}') + >>> node + + """ + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + return "%s.set" % BUILTINS + + +class Slice(NodeNG): + """Class representing an :class:`ast.Slice` node. + + >>> node = astroid.extract_node('things[1:3]') + >>> node + + >>> node.slice + + """ + + _astroid_fields = ("lower", "upper", "step") + lower = None + """The lower index in the slice. + + :type: NodeNG or None + """ + upper = None + """The upper index in the slice. + + :type: NodeNG or None + """ + step = None + """The step to take between indexes. + + :type: NodeNG or None + """ + + def postinit(self, lower=None, upper=None, step=None): + """Do some setup after initialisation. + + :param lower: The lower index in the slice. + :value lower: NodeNG or None + + :param upper: The upper index in the slice. + :value upper: NodeNG or None + + :param step: The step to take between index. + :param step: NodeNG or None + """ + self.lower = lower + self.upper = upper + self.step = step + + def _wrap_attribute(self, attr): + """Wrap the empty attributes of the Slice in a Const node.""" + if not attr: + const = const_factory(attr) + const.parent = self + return const + return attr + + @decorators.cachedproperty + def _proxied(self): + builtins = MANAGER.builtins_module + return builtins.getattr("slice")[0] + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + return "%s.slice" % BUILTINS + + def igetattr(self, attrname, context=None): + """Infer the possible values of the given attribute on the slice. + + :param attrname: The name of the attribute to infer. + :type attrname: str + + :returns: The inferred possible values. + :rtype: iterable(NodeNG) + """ + if attrname == "start": + yield self._wrap_attribute(self.lower) + elif attrname == "stop": + yield self._wrap_attribute(self.upper) + elif attrname == "step": + yield self._wrap_attribute(self.step) + else: + yield from self.getattr(attrname, context=context) + + def getattr(self, attrname, context=None): + return self._proxied.getattr(attrname, context) + + def get_children(self): + if self.lower is not None: + yield self.lower + + if self.upper is not None: + yield self.upper + + if self.step is not None: + yield self.step + + +class Starred(mixins.ParentAssignTypeMixin, NodeNG): + """Class representing an :class:`ast.Starred` node. + + >>> node = astroid.extract_node('*args') + >>> node + + """ + + _astroid_fields = ("value",) + _other_fields = ("ctx",) + value = None + """What is being unpacked. + + :type: NodeNG or None + """ + + def __init__(self, ctx=None, lineno=None, col_offset=None, parent=None): + """ + :param ctx: Whether the list is assigned to or loaded from. + :type ctx: Context or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.ctx = ctx + """Whether the starred item is assigned to or loaded from. + + :type: Context or None + """ + + super(Starred, self).__init__( + lineno=lineno, col_offset=col_offset, parent=parent + ) + + def postinit(self, value=None): + """Do some setup after initialisation. + + :param value: What is being unpacked. + :type value: NodeNG or None + """ + self.value = value + + def get_children(self): + yield self.value + + +class Subscript(NodeNG): + """Class representing an :class:`ast.Subscript` node. + + >>> node = astroid.extract_node('things[1:3]') + >>> node + + """ + + _astroid_fields = ("value", "slice") + _other_fields = ("ctx",) + value = None + """What is being indexed. + + :type: NodeNG or None + """ + slice = None + """The slice being used to lookup. + + :type: NodeNG or None + """ + + def __init__(self, ctx=None, lineno=None, col_offset=None, parent=None): + """ + :param ctx: Whether the subscripted item is assigned to or loaded from. + :type ctx: Context or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.ctx = ctx + """Whether the subscripted item is assigned to or loaded from. + + :type: Context or None + """ + + super(Subscript, self).__init__( + lineno=lineno, col_offset=col_offset, parent=parent + ) + + # pylint: disable=redefined-builtin; had to use the same name as builtin ast module. + def postinit(self, value=None, slice=None): + """Do some setup after initialisation. + + :param value: What is being indexed. + :type value: NodeNG or None + + :param slice: The slice being used to lookup. + :type slice: NodeNG or None + """ + self.value = value + self.slice = slice + + def get_children(self): + yield self.value + yield self.slice + + +class TryExcept(mixins.MultiLineBlockMixin, mixins.BlockRangeMixIn, Statement): + """Class representing an :class:`ast.TryExcept` node. + + >>> node = astroid.extract_node(''' + try: + do_something() + except Exception as error: + print("Error!") + ''') + >>> node + + """ + + _astroid_fields = ("body", "handlers", "orelse") + _multi_line_block_fields = ("body", "handlers", "orelse") + body = None + """The contents of the block to catch exceptions from. + + :type: list(NodeNG) or None + """ + handlers = None + """The exception handlers. + + :type: list(ExceptHandler) or None + """ + orelse = None + """The contents of the ``else`` block. + + :type: list(NodeNG) or None + """ + + def postinit(self, body=None, handlers=None, orelse=None): + """Do some setup after initialisation. + + :param body: The contents of the block to catch exceptions from. + :type body: list(NodeNG) or None + + :param handlers: The exception handlers. + :type handlers: list(ExceptHandler) or None + + :param orelse: The contents of the ``else`` block. + :type orelse: list(NodeNG) or None + """ + self.body = body + self.handlers = handlers + self.orelse = orelse + + def _infer_name(self, frame, name): + return name + + def block_range(self, lineno): + """Get a range from the given line number to where this node ends. + + :param lineno: The line number to start the range at. + :type lineno: int + + :returns: The range of line numbers that this node belongs to, + starting at the given line number. + :rtype: tuple(int, int) + """ + last = None + for exhandler in self.handlers: + if exhandler.type and lineno == exhandler.type.fromlineno: + return lineno, lineno + if exhandler.body[0].fromlineno <= lineno <= exhandler.body[-1].tolineno: + return lineno, exhandler.body[-1].tolineno + if last is None: + last = exhandler.body[0].fromlineno - 1 + return self._elsed_block_range(lineno, self.orelse, last) + + def get_children(self): + yield from self.body + + yield from self.handlers or () + yield from self.orelse or () + + +class TryFinally(mixins.MultiLineBlockMixin, mixins.BlockRangeMixIn, Statement): + """Class representing an :class:`ast.TryFinally` node. + + >>> node = astroid.extract_node(''' + try: + do_something() + except Exception as error: + print("Error!") + finally: + print("Cleanup!") + ''') + >>> node + + """ + + _astroid_fields = ("body", "finalbody") + _multi_line_block_fields = ("body", "finalbody") + body = None + """The try-except that the finally is attached to. + + :type: list(TryExcept) or None + """ + finalbody = None + """The contents of the ``finally`` block. + + :type: list(NodeNG) or None + """ + + def postinit(self, body=None, finalbody=None): + """Do some setup after initialisation. + + :param body: The try-except that the finally is attached to. + :type body: list(TryExcept) or None + + :param finalbody: The contents of the ``finally`` block. + :type finalbody: list(NodeNG) or None + """ + self.body = body + self.finalbody = finalbody + + def block_range(self, lineno): + """Get a range from the given line number to where this node ends. + + :param lineno: The line number to start the range at. + :type lineno: int + + :returns: The range of line numbers that this node belongs to, + starting at the given line number. + :rtype: tuple(int, int) + """ + child = self.body[0] + # py2.5 try: except: finally: + if ( + isinstance(child, TryExcept) + and child.fromlineno == self.fromlineno + and child.tolineno >= lineno > self.fromlineno + ): + return child.block_range(lineno) + return self._elsed_block_range(lineno, self.finalbody) + + def get_children(self): + yield from self.body + yield from self.finalbody + + +class Tuple(_BaseContainer): + """Class representing an :class:`ast.Tuple` node. + + >>> node = astroid.extract_node('(1, 2, 3)') + >>> node + + """ + + _other_fields = ("ctx",) + + def __init__(self, ctx=None, lineno=None, col_offset=None, parent=None): + """ + :param ctx: Whether the tuple is assigned to or loaded from. + :type ctx: Context or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.ctx = ctx + """Whether the tuple is assigned to or loaded from. + + :type: Context or None + """ + + super(Tuple, self).__init__(lineno, col_offset, parent) + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + return "%s.tuple" % BUILTINS + + def getitem(self, index, context=None): + """Get an item from this node. + + :param index: The node to use as a subscript index. + :type index: Const or Slice + """ + return _container_getitem(self, self.elts, index, context=context) + + +class UnaryOp(NodeNG): + """Class representing an :class:`ast.UnaryOp` node. + + >>> node = astroid.extract_node('-5') + >>> node + + """ + + _astroid_fields = ("operand",) + _other_fields = ("op",) + operand = None + """What the unary operator is applied to. + + :type: NodeNG or None + """ + + def __init__(self, op=None, lineno=None, col_offset=None, parent=None): + """ + :param op: The operator. + :type: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.op = op + """The operator. + + :type: str or None + """ + + super(UnaryOp, self).__init__(lineno, col_offset, parent) + + def postinit(self, operand=None): + """Do some setup after initialisation. + + :param operand: What the unary operator is applied to. + :type operand: NodeNG or None + """ + self.operand = operand + + # This is set by inference.py + def _infer_unaryop(self, context=None): + raise NotImplementedError + + def type_errors(self, context=None): + """Get a list of type errors which can occur during inference. + + Each TypeError is represented by a :class:`BadBinaryOperationMessage`, + which holds the original exception. + + :returns: The list of possible type errors. + :rtype: list(BadBinaryOperationMessage) + """ + try: + results = self._infer_unaryop(context=context) + return [ + result + for result in results + if isinstance(result, util.BadUnaryOperationMessage) + ] + except exceptions.InferenceError: + return [] + + def get_children(self): + yield self.operand + + def op_precedence(self): + if self.op == "not": + return OP_PRECEDENCE[self.op] + + return super().op_precedence() + + +class While(mixins.MultiLineBlockMixin, mixins.BlockRangeMixIn, Statement): + """Class representing an :class:`ast.While` node. + + >>> node = astroid.extract_node(''' + while condition(): + print("True") + ''') + >>> node + + """ + + _astroid_fields = ("test", "body", "orelse") + _multi_line_block_fields = ("body", "orelse") + test = None + """The condition that the loop tests. + + :type: NodeNG or None + """ + body = None + """The contents of the loop. + + :type: list(NodeNG) or None + """ + orelse = None + """The contents of the ``else`` block. + + :type: list(NodeNG) or None + """ + + def postinit(self, test=None, body=None, orelse=None): + """Do some setup after initialisation. + + :param test: The condition that the loop tests. + :type test: NodeNG or None + + :param body: The contents of the loop. + :type body: list(NodeNG) or None + + :param orelse: The contents of the ``else`` block. + :type orelse: list(NodeNG) or None + """ + self.test = test + self.body = body + self.orelse = orelse + + @decorators.cachedproperty + def blockstart_tolineno(self): + """The line on which the beginning of this block ends. + + :type: int + """ + return self.test.tolineno + + def block_range(self, lineno): + """Get a range from the given line number to where this node ends. + + :param lineno: The line number to start the range at. + :type lineno: int + + :returns: The range of line numbers that this node belongs to, + starting at the given line number. + :rtype: tuple(int, int) + """ + return self._elsed_block_range(lineno, self.orelse) + + def get_children(self): + yield self.test + + yield from self.body + yield from self.orelse + + +class With( + mixins.MultiLineBlockMixin, + mixins.BlockRangeMixIn, + mixins.AssignTypeMixin, + Statement, +): + """Class representing an :class:`ast.With` node. + + >>> node = astroid.extract_node(''' + with open(file_path) as file_: + print(file_.read()) + ''') + >>> node + + """ + + _astroid_fields = ("items", "body") + _other_other_fields = ("type_annotation",) + _multi_line_block_fields = ("body",) + items = None + """The pairs of context managers and the names they are assigned to. + + :type: list(tuple(NodeNG, AssignName or None)) or None + """ + body = None + """The contents of the ``with`` block. + + :type: list(NodeNG) or None + """ + type_annotation = None + """If present, this will contain the type annotation passed by a type comment + + :type: NodeNG or None + """ + + def postinit(self, items=None, body=None, type_annotation=None): + """Do some setup after initialisation. + + :param items: The pairs of context managers and the names + they are assigned to. + :type items: list(tuple(NodeNG, AssignName or None)) or None + + :param body: The contents of the ``with`` block. + :type body: list(NodeNG) or None + """ + self.items = items + self.body = body + self.type_annotation = type_annotation + + @decorators.cachedproperty + def blockstart_tolineno(self): + """The line on which the beginning of this block ends. + + :type: int + """ + return self.items[-1][0].tolineno + + def get_children(self): + """Get the child nodes below this node. + + :returns: The children. + :rtype: iterable(NodeNG) + """ + for expr, var in self.items: + yield expr + if var: + yield var + yield from self.body + + +class AsyncWith(With): + """Asynchronous ``with`` built with the ``async`` keyword.""" + + +class Yield(NodeNG): + """Class representing an :class:`ast.Yield` node. + + >>> node = astroid.extract_node('yield True') + >>> node + + """ + + _astroid_fields = ("value",) + value = None + """The value to yield. + + :type: NodeNG or None + """ + + def postinit(self, value=None): + """Do some setup after initialisation. + + :param value: The value to yield. + :type value: NodeNG or None + """ + self.value = value + + def get_children(self): + if self.value is not None: + yield self.value + + def _get_yield_nodes_skip_lambdas(self): + yield self + + +class YieldFrom(Yield): + """Class representing an :class:`ast.YieldFrom` node.""" + + +class DictUnpack(mixins.NoChildrenMixin, NodeNG): + """Represents the unpacking of dicts into dicts using :pep:`448`.""" + + +class FormattedValue(NodeNG): + """Class representing an :class:`ast.FormattedValue` node. + + Represents a :pep:`498` format string. + + >>> node = astroid.extract_node('f"Format {type_}"') + >>> node + + >>> node.values + [, ] + """ + + _astroid_fields = ("value", "format_spec") + value = None + """The value to be formatted into the string. + + :type: NodeNG or None + """ + conversion = None + """The type of formatting to be applied to the value. + + .. seealso:: + :class:`ast.FormattedValue` + + :type: int or None + """ + format_spec = None + """The formatting to be applied to the value. + + .. seealso:: + :class:`ast.FormattedValue` + + :type: JoinedStr or None + """ + + def postinit(self, value, conversion=None, format_spec=None): + """Do some setup after initialisation. + + :param value: The value to be formatted into the string. + :type value: NodeNG + + :param conversion: The type of formatting to be applied to the value. + :type conversion: int or None + + :param format_spec: The formatting to be applied to the value. + :type format_spec: JoinedStr or None + """ + self.value = value + self.conversion = conversion + self.format_spec = format_spec + + def get_children(self): + yield self.value + + if self.format_spec is not None: + yield self.format_spec + + +class JoinedStr(NodeNG): + """Represents a list of string expressions to be joined. + + >>> node = astroid.extract_node('f"Format {type_}"') + >>> node + + """ + + _astroid_fields = ("values",) + values = None + """The string expressions to be joined. + + :type: list(FormattedValue or Const) or None + """ + + def postinit(self, values=None): + """Do some setup after initialisation. + + :param value: The string expressions to be joined. + + :type: list(FormattedValue or Const) or None + """ + self.values = values + + def get_children(self): + yield from self.values + + +class NamedExpr(mixins.AssignTypeMixin, NodeNG): + """Represents the assignment from the assignment expression + + >>> module = astroid.parse('if a := 1: pass') + >>> module.body[0].test + + """ + + _astroid_fields = ("target", "value") + target = None + """The assignment target + + :type: Name + """ + value = None + """The value that gets assigned in the expression + + :type: NodeNG + """ + + def postinit(self, target, value): + self.target = target + self.value = value + + +class Unknown(mixins.AssignTypeMixin, NodeNG): + """This node represents a node in a constructed AST where + introspection is not possible. At the moment, it's only used in + the args attribute of FunctionDef nodes where function signature + introspection failed. + """ + + name = "Unknown" + + def qname(self): + return "Unknown" + + def infer(self, context=None, **kwargs): + """Inference on an Unknown node immediately terminates.""" + yield util.Uninferable + + +# constants ############################################################## + +CONST_CLS = { + list: List, + tuple: Tuple, + dict: Dict, + set: Set, + type(None): Const, + type(NotImplemented): Const, +} +if PY38: + CONST_CLS[type(...)] = Const + + +def _update_const_classes(): + """update constant classes, so the keys of CONST_CLS can be reused""" + klasses = (bool, int, float, complex, str, bytes) + for kls in klasses: + CONST_CLS[kls] = Const + + +_update_const_classes() + + +def _two_step_initialization(cls, value): + instance = cls() + instance.postinit(value) + return instance + + +def _dict_initialization(cls, value): + if isinstance(value, dict): + value = tuple(value.items()) + return _two_step_initialization(cls, value) + + +_CONST_CLS_CONSTRUCTORS = { + List: _two_step_initialization, + Tuple: _two_step_initialization, + Dict: _dict_initialization, + Set: _two_step_initialization, + Const: lambda cls, value: cls(value), +} + + +def const_factory(value): + """return an astroid node for a python value""" + # XXX we should probably be stricter here and only consider stuff in + # CONST_CLS or do better treatment: in case where value is not in CONST_CLS, + # we should rather recall the builder on this value than returning an empty + # node (another option being that const_factory shouldn't be called with something + # not in CONST_CLS) + assert not isinstance(value, NodeNG) + + # Hack for ignoring elements of a sequence + # or a mapping, in order to avoid transforming + # each element to an AST. This is fixed in 2.0 + # and this approach is a temporary hack. + if isinstance(value, (list, set, tuple, dict)): + elts = [] + else: + elts = value + + try: + initializer_cls = CONST_CLS[value.__class__] + initializer = _CONST_CLS_CONSTRUCTORS[initializer_cls] + return initializer(initializer_cls, elts) + except (KeyError, AttributeError): + node = EmptyNode() + node.object = value + return node + + +def is_from_decorator(node): + """Return True if the given node is the child of a decorator""" + parent = node.parent + while parent is not None: + if isinstance(parent, Decorators): + return True + parent = parent.parent + return False diff --git a/venv/Lib/site-packages/astroid/nodes.py b/venv/Lib/site-packages/astroid/nodes.py new file mode 100644 index 0000000..bf6911a --- /dev/null +++ b/venv/Lib/site-packages/astroid/nodes.py @@ -0,0 +1,175 @@ +# Copyright (c) 2006-2011, 2013 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2010 Daniel Harding +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2016 Jared Garst +# Copyright (c) 2017 Ashley Whetter +# Copyright (c) 2017 rr- +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Every available node class. + +.. seealso:: + :doc:`ast documentation ` + +All nodes inherit from :class:`~astroid.node_classes.NodeNG`. +""" +# pylint: disable=unused-import,redefined-builtin + +from astroid.node_classes import ( + Arguments, + AssignAttr, + Assert, + Assign, + AnnAssign, + AssignName, + AugAssign, + Repr, + BinOp, + BoolOp, + Break, + Call, + Compare, + Comprehension, + Const, + Continue, + Decorators, + DelAttr, + DelName, + Delete, + Dict, + Expr, + Ellipsis, + EmptyNode, + ExceptHandler, + Exec, + ExtSlice, + For, + ImportFrom, + Attribute, + Global, + If, + IfExp, + Import, + Index, + Keyword, + List, + Name, + NamedExpr, + Nonlocal, + Pass, + Print, + Raise, + Return, + Set, + Slice, + Starred, + Subscript, + TryExcept, + TryFinally, + Tuple, + UnaryOp, + While, + With, + Yield, + YieldFrom, + const_factory, + AsyncFor, + Await, + AsyncWith, + FormattedValue, + JoinedStr, + # Node not present in the builtin ast module. + DictUnpack, + Unknown, +) +from astroid.scoped_nodes import ( + Module, + GeneratorExp, + Lambda, + DictComp, + ListComp, + SetComp, + FunctionDef, + ClassDef, + AsyncFunctionDef, +) + + +ALL_NODE_CLASSES = ( + AsyncFunctionDef, + AsyncFor, + AsyncWith, + Await, + Arguments, + AssignAttr, + Assert, + Assign, + AnnAssign, + AssignName, + AugAssign, + Repr, + BinOp, + BoolOp, + Break, + Call, + ClassDef, + Compare, + Comprehension, + Const, + Continue, + Decorators, + DelAttr, + DelName, + Delete, + Dict, + DictComp, + DictUnpack, + Expr, + Ellipsis, + EmptyNode, + ExceptHandler, + Exec, + ExtSlice, + For, + ImportFrom, + FunctionDef, + Attribute, + GeneratorExp, + Global, + If, + IfExp, + Import, + Index, + Keyword, + Lambda, + List, + ListComp, + Name, + NamedExpr, + Nonlocal, + Module, + Pass, + Print, + Raise, + Return, + Set, + SetComp, + Slice, + Starred, + Subscript, + TryExcept, + TryFinally, + Tuple, + UnaryOp, + While, + With, + Yield, + YieldFrom, + FormattedValue, + JoinedStr, +) diff --git a/venv/Lib/site-packages/astroid/objects.py b/venv/Lib/site-packages/astroid/objects.py new file mode 100644 index 0000000..888ca36 --- /dev/null +++ b/venv/Lib/site-packages/astroid/objects.py @@ -0,0 +1,282 @@ +# Copyright (c) 2015-2016, 2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +""" +Inference objects are a way to represent composite AST nodes, +which are used only as inference results, so they can't be found in the +original AST tree. For instance, inferring the following frozenset use, +leads to an inferred FrozenSet: + + Call(func=Name('frozenset'), args=Tuple(...)) +""" + +import builtins + +from astroid import bases +from astroid import decorators +from astroid import exceptions +from astroid import MANAGER +from astroid import node_classes +from astroid import scoped_nodes +from astroid import util + + +BUILTINS = builtins.__name__ +objectmodel = util.lazy_import("interpreter.objectmodel") + + +class FrozenSet(node_classes._BaseContainer): + """class representing a FrozenSet composite node""" + + def pytype(self): + return "%s.frozenset" % BUILTINS + + def _infer(self, context=None): + yield self + + @decorators.cachedproperty + def _proxied(self): # pylint: disable=method-hidden + ast_builtins = MANAGER.builtins_module + return ast_builtins.getattr("frozenset")[0] + + +class Super(node_classes.NodeNG): + """Proxy class over a super call. + + This class offers almost the same behaviour as Python's super, + which is MRO lookups for retrieving attributes from the parents. + + The *mro_pointer* is the place in the MRO from where we should + start looking, not counting it. *mro_type* is the object which + provides the MRO, it can be both a type or an instance. + *self_class* is the class where the super call is, while + *scope* is the function where the super call is. + """ + + # pylint: disable=unnecessary-lambda + special_attributes = util.lazy_descriptor(lambda: objectmodel.SuperModel()) + + # pylint: disable=super-init-not-called + def __init__(self, mro_pointer, mro_type, self_class, scope): + self.type = mro_type + self.mro_pointer = mro_pointer + self._class_based = False + self._self_class = self_class + self._scope = scope + + def _infer(self, context=None): + yield self + + def super_mro(self): + """Get the MRO which will be used to lookup attributes in this super.""" + if not isinstance(self.mro_pointer, scoped_nodes.ClassDef): + raise exceptions.SuperError( + "The first argument to super must be a subtype of " + "type, not {mro_pointer}.", + super_=self, + ) + + if isinstance(self.type, scoped_nodes.ClassDef): + # `super(type, type)`, most likely in a class method. + self._class_based = True + mro_type = self.type + else: + mro_type = getattr(self.type, "_proxied", None) + if not isinstance(mro_type, (bases.Instance, scoped_nodes.ClassDef)): + raise exceptions.SuperError( + "The second argument to super must be an " + "instance or subtype of type, not {type}.", + super_=self, + ) + + if not mro_type.newstyle: + raise exceptions.SuperError( + "Unable to call super on old-style classes.", super_=self + ) + + mro = mro_type.mro() + if self.mro_pointer not in mro: + raise exceptions.SuperError( + "The second argument to super must be an " + "instance or subtype of type, not {type}.", + super_=self, + ) + + index = mro.index(self.mro_pointer) + return mro[index + 1 :] + + @decorators.cachedproperty + def _proxied(self): + ast_builtins = MANAGER.builtins_module + return ast_builtins.getattr("super")[0] + + def pytype(self): + return "%s.super" % BUILTINS + + def display_type(self): + return "Super of" + + @property + def name(self): + """Get the name of the MRO pointer.""" + return self.mro_pointer.name + + def qname(self): + return "super" + + def igetattr(self, name, context=None): + """Retrieve the inferred values of the given attribute name.""" + + if name in self.special_attributes: + yield self.special_attributes.lookup(name) + return + + try: + mro = self.super_mro() + # Don't let invalid MROs or invalid super calls + # leak out as is from this function. + except exceptions.SuperError as exc: + raise exceptions.AttributeInferenceError( + ( + "Lookup for {name} on {target!r} because super call {super!r} " + "is invalid." + ), + target=self, + attribute=name, + context=context, + super_=exc.super_, + ) from exc + except exceptions.MroError as exc: + raise exceptions.AttributeInferenceError( + ( + "Lookup for {name} on {target!r} failed because {cls!r} has an " + "invalid MRO." + ), + target=self, + attribute=name, + context=context, + mros=exc.mros, + cls=exc.cls, + ) from exc + found = False + for cls in mro: + if name not in cls.locals: + continue + + found = True + for inferred in bases._infer_stmts([cls[name]], context, frame=self): + if not isinstance(inferred, scoped_nodes.FunctionDef): + yield inferred + continue + + # We can obtain different descriptors from a super depending + # on what we are accessing and where the super call is. + if inferred.type == "classmethod": + yield bases.BoundMethod(inferred, cls) + elif self._scope.type == "classmethod" and inferred.type == "method": + yield inferred + elif self._class_based or inferred.type == "staticmethod": + yield inferred + elif bases._is_property(inferred): + # TODO: support other descriptors as well. + try: + yield from inferred.infer_call_result(self, context) + except exceptions.InferenceError: + yield util.Uninferable + else: + yield bases.BoundMethod(inferred, cls) + + if not found: + raise exceptions.AttributeInferenceError( + target=self, attribute=name, context=context + ) + + def getattr(self, name, context=None): + return list(self.igetattr(name, context=context)) + + +class ExceptionInstance(bases.Instance): + """Class for instances of exceptions + + It has special treatment for some of the exceptions's attributes, + which are transformed at runtime into certain concrete objects, such as + the case of .args. + """ + + @decorators.cachedproperty + def special_attributes(self): + qname = self.qname() + instance = objectmodel.BUILTIN_EXCEPTIONS.get( + qname, objectmodel.ExceptionInstanceModel + ) + return instance()(self) + + +class DictInstance(bases.Instance): + """Special kind of instances for dictionaries + + This instance knows the underlying object model of the dictionaries, which means + that methods such as .values or .items can be properly inferred. + """ + + # pylint: disable=unnecessary-lambda + special_attributes = util.lazy_descriptor(lambda: objectmodel.DictModel()) + + +# Custom objects tailored for dictionaries, which are used to +# disambiguate between the types of Python 2 dict's method returns +# and Python 3 (where they return set like objects). +class DictItems(bases.Proxy): + __str__ = node_classes.NodeNG.__str__ + __repr__ = node_classes.NodeNG.__repr__ + + +class DictKeys(bases.Proxy): + __str__ = node_classes.NodeNG.__str__ + __repr__ = node_classes.NodeNG.__repr__ + + +class DictValues(bases.Proxy): + __str__ = node_classes.NodeNG.__str__ + __repr__ = node_classes.NodeNG.__repr__ + + +class PartialFunction(scoped_nodes.FunctionDef): + """A class representing partial function obtained via functools.partial""" + + def __init__( + self, call, name=None, doc=None, lineno=None, col_offset=None, parent=None + ): + super().__init__(name, doc, lineno, col_offset, parent) + self.filled_positionals = len(call.positional_arguments[1:]) + self.filled_args = call.positional_arguments[1:] + self.filled_keywords = call.keyword_arguments + + def infer_call_result(self, caller=None, context=None): + if context: + current_passed_keywords = { + keyword for (keyword, _) in context.callcontext.keywords + } + for keyword, value in self.filled_keywords.items(): + if keyword not in current_passed_keywords: + context.callcontext.keywords.append((keyword, value)) + + call_context_args = context.callcontext.args or [] + context.callcontext.args = self.filled_args + call_context_args + + return super().infer_call_result(caller=caller, context=context) + + def qname(self): + return self.__class__.__name__ + + +# TODO: Hack to solve the circular import problem between node_classes and objects +# This is not needed in 2.0, which has a cleaner design overall +node_classes.Dict.__bases__ = (node_classes.NodeNG, DictInstance) diff --git a/venv/Lib/site-packages/astroid/protocols.py b/venv/Lib/site-packages/astroid/protocols.py new file mode 100644 index 0000000..c1825f1 --- /dev/null +++ b/venv/Lib/site-packages/astroid/protocols.py @@ -0,0 +1,766 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2009-2011, 2013-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Dmitry Pribysh +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2017-2018 Ashley Whetter +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2017 rr- +# Copyright (c) 2018 Bryce Guinta +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 HoverHell + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""this module contains a set of functions to handle python protocols for nodes +where it makes sense. +""" + +import collections +import operator as operator_mod + +import itertools + +from astroid import Store +from astroid import arguments +from astroid import bases +from astroid import context as contextmod +from astroid import exceptions +from astroid import decorators +from astroid import node_classes +from astroid import helpers +from astroid import nodes +from astroid import util + +raw_building = util.lazy_import("raw_building") +objects = util.lazy_import("objects") + + +def _reflected_name(name): + return "__r" + name[2:] + + +def _augmented_name(name): + return "__i" + name[2:] + + +_CONTEXTLIB_MGR = "contextlib.contextmanager" +BIN_OP_METHOD = { + "+": "__add__", + "-": "__sub__", + "/": "__truediv__", + "//": "__floordiv__", + "*": "__mul__", + "**": "__pow__", + "%": "__mod__", + "&": "__and__", + "|": "__or__", + "^": "__xor__", + "<<": "__lshift__", + ">>": "__rshift__", + "@": "__matmul__", +} + +REFLECTED_BIN_OP_METHOD = { + key: _reflected_name(value) for (key, value) in BIN_OP_METHOD.items() +} +AUGMENTED_OP_METHOD = { + key + "=": _augmented_name(value) for (key, value) in BIN_OP_METHOD.items() +} + +UNARY_OP_METHOD = { + "+": "__pos__", + "-": "__neg__", + "~": "__invert__", + "not": None, # XXX not '__nonzero__' +} +_UNARY_OPERATORS = { + "+": operator_mod.pos, + "-": operator_mod.neg, + "~": operator_mod.invert, + "not": operator_mod.not_, +} + + +def _infer_unary_op(obj, op): + func = _UNARY_OPERATORS[op] + value = func(obj) + return nodes.const_factory(value) + + +nodes.Tuple.infer_unary_op = lambda self, op: _infer_unary_op(tuple(self.elts), op) +nodes.List.infer_unary_op = lambda self, op: _infer_unary_op(self.elts, op) +nodes.Set.infer_unary_op = lambda self, op: _infer_unary_op(set(self.elts), op) +nodes.Const.infer_unary_op = lambda self, op: _infer_unary_op(self.value, op) +nodes.Dict.infer_unary_op = lambda self, op: _infer_unary_op(dict(self.items), op) + +# Binary operations + +BIN_OP_IMPL = { + "+": lambda a, b: a + b, + "-": lambda a, b: a - b, + "/": lambda a, b: a / b, + "//": lambda a, b: a // b, + "*": lambda a, b: a * b, + "**": lambda a, b: a ** b, + "%": lambda a, b: a % b, + "&": lambda a, b: a & b, + "|": lambda a, b: a | b, + "^": lambda a, b: a ^ b, + "<<": lambda a, b: a << b, + ">>": lambda a, b: a >> b, + "@": operator_mod.matmul, +} +for _KEY, _IMPL in list(BIN_OP_IMPL.items()): + BIN_OP_IMPL[_KEY + "="] = _IMPL + + +@decorators.yes_if_nothing_inferred +def const_infer_binary_op(self, opnode, operator, other, context, _): + not_implemented = nodes.Const(NotImplemented) + if isinstance(other, nodes.Const): + try: + impl = BIN_OP_IMPL[operator] + try: + yield nodes.const_factory(impl(self.value, other.value)) + except TypeError: + # ArithmeticError is not enough: float >> float is a TypeError + yield not_implemented + except Exception: # pylint: disable=broad-except + yield util.Uninferable + except TypeError: + yield not_implemented + elif isinstance(self.value, str) and operator == "%": + # TODO(cpopa): implement string interpolation later on. + yield util.Uninferable + else: + yield not_implemented + + +nodes.Const.infer_binary_op = const_infer_binary_op + + +def _multiply_seq_by_int(self, opnode, other, context): + node = self.__class__(parent=opnode) + filtered_elts = ( + helpers.safe_infer(elt, context) or util.Uninferable + for elt in self.elts + if elt is not util.Uninferable + ) + node.elts = list(filtered_elts) * other.value + return node + + +def _filter_uninferable_nodes(elts, context): + for elt in elts: + if elt is util.Uninferable: + yield nodes.Unknown() + else: + for inferred in elt.infer(context): + if inferred is not util.Uninferable: + yield inferred + else: + yield nodes.Unknown() + + +@decorators.yes_if_nothing_inferred +def tl_infer_binary_op(self, opnode, operator, other, context, method): + not_implemented = nodes.Const(NotImplemented) + if isinstance(other, self.__class__) and operator == "+": + node = self.__class__(parent=opnode) + node.elts = list( + itertools.chain( + _filter_uninferable_nodes(self.elts, context), + _filter_uninferable_nodes(other.elts, context), + ) + ) + yield node + elif isinstance(other, nodes.Const) and operator == "*": + if not isinstance(other.value, int): + yield not_implemented + return + yield _multiply_seq_by_int(self, opnode, other, context) + elif isinstance(other, bases.Instance) and operator == "*": + # Verify if the instance supports __index__. + as_index = helpers.class_instance_as_index(other) + if not as_index: + yield util.Uninferable + else: + yield _multiply_seq_by_int(self, opnode, as_index, context) + else: + yield not_implemented + + +nodes.Tuple.infer_binary_op = tl_infer_binary_op +nodes.List.infer_binary_op = tl_infer_binary_op + + +@decorators.yes_if_nothing_inferred +def instance_class_infer_binary_op(self, opnode, operator, other, context, method): + return method.infer_call_result(self, context) + + +bases.Instance.infer_binary_op = instance_class_infer_binary_op +nodes.ClassDef.infer_binary_op = instance_class_infer_binary_op + + +# assignment ################################################################## + +"""the assigned_stmts method is responsible to return the assigned statement +(e.g. not inferred) according to the assignment type. + +The `assign_path` argument is used to record the lhs path of the original node. +For instance if we want assigned statements for 'c' in 'a, (b,c)', assign_path +will be [1, 1] once arrived to the Assign node. + +The `context` argument is the current inference context which should be given +to any intermediary inference necessary. +""" + + +def _resolve_looppart(parts, assign_path, context): + """recursive function to resolve multiple assignments on loops""" + assign_path = assign_path[:] + index = assign_path.pop(0) + for part in parts: + if part is util.Uninferable: + continue + if not hasattr(part, "itered"): + continue + try: + itered = part.itered() + except TypeError: + continue + for stmt in itered: + index_node = nodes.Const(index) + try: + assigned = stmt.getitem(index_node, context) + except ( + AttributeError, + exceptions.AstroidTypeError, + exceptions.AstroidIndexError, + ): + continue + if not assign_path: + # we achieved to resolved the assignment path, + # don't infer the last part + yield assigned + elif assigned is util.Uninferable: + break + else: + # we are not yet on the last part of the path + # search on each possibly inferred value + try: + yield from _resolve_looppart( + assigned.infer(context), assign_path, context + ) + except exceptions.InferenceError: + break + + +@decorators.raise_if_nothing_inferred +def for_assigned_stmts(self, node=None, context=None, assign_path=None): + if isinstance(self, nodes.AsyncFor) or getattr(self, "is_async", False): + # Skip inferring of async code for now + return dict(node=self, unknown=node, assign_path=assign_path, context=context) + if assign_path is None: + for lst in self.iter.infer(context): + if isinstance(lst, (nodes.Tuple, nodes.List)): + yield from lst.elts + else: + yield from _resolve_looppart(self.iter.infer(context), assign_path, context) + return dict(node=self, unknown=node, assign_path=assign_path, context=context) + + +nodes.For.assigned_stmts = for_assigned_stmts +nodes.Comprehension.assigned_stmts = for_assigned_stmts + + +def sequence_assigned_stmts(self, node=None, context=None, assign_path=None): + if assign_path is None: + assign_path = [] + try: + index = self.elts.index(node) + except ValueError as exc: + raise exceptions.InferenceError( + "Tried to retrieve a node {node!r} which does not exist", + node=self, + assign_path=assign_path, + context=context, + ) from exc + + assign_path.insert(0, index) + return self.parent.assigned_stmts( + node=self, context=context, assign_path=assign_path + ) + + +nodes.Tuple.assigned_stmts = sequence_assigned_stmts +nodes.List.assigned_stmts = sequence_assigned_stmts + + +def assend_assigned_stmts(self, node=None, context=None, assign_path=None): + return self.parent.assigned_stmts(node=self, context=context) + + +nodes.AssignName.assigned_stmts = assend_assigned_stmts +nodes.AssignAttr.assigned_stmts = assend_assigned_stmts + + +def _arguments_infer_argname(self, name, context): + # arguments information may be missing, in which case we can't do anything + # more + if not (self.args or self.vararg or self.kwarg): + yield util.Uninferable + return + # first argument of instance/class method + if self.args and getattr(self.args[0], "name", None) == name: + functype = self.parent.type + cls = self.parent.parent.scope() + is_metaclass = isinstance(cls, nodes.ClassDef) and cls.type == "metaclass" + # If this is a metaclass, then the first argument will always + # be the class, not an instance. + if is_metaclass or functype == "classmethod": + yield cls + return + if functype == "method": + yield bases.Instance(cls) + return + + if context and context.callcontext: + call_site = arguments.CallSite(context.callcontext, context.extra_context) + yield from call_site.infer_argument(self.parent, name, context) + return + + if name == self.vararg: + vararg = nodes.const_factory(()) + vararg.parent = self + yield vararg + return + if name == self.kwarg: + kwarg = nodes.const_factory({}) + kwarg.parent = self + yield kwarg + return + # if there is a default value, yield it. And then yield Uninferable to reflect + # we can't guess given argument value + try: + context = contextmod.copy_context(context) + yield from self.default_value(name).infer(context) + yield util.Uninferable + except exceptions.NoDefault: + yield util.Uninferable + + +def arguments_assigned_stmts(self, node=None, context=None, assign_path=None): + if context.callcontext: + # reset call context/name + callcontext = context.callcontext + context = contextmod.copy_context(context) + context.callcontext = None + args = arguments.CallSite(callcontext) + return args.infer_argument(self.parent, node.name, context) + return _arguments_infer_argname(self, node.name, context) + + +nodes.Arguments.assigned_stmts = arguments_assigned_stmts + + +@decorators.raise_if_nothing_inferred +def assign_assigned_stmts(self, node=None, context=None, assign_path=None): + if not assign_path: + yield self.value + return None + yield from _resolve_assignment_parts( + self.value.infer(context), assign_path, context + ) + + return dict(node=self, unknown=node, assign_path=assign_path, context=context) + + +def assign_annassigned_stmts(self, node=None, context=None, assign_path=None): + for inferred in assign_assigned_stmts(self, node, context, assign_path): + if inferred is None: + yield util.Uninferable + else: + yield inferred + + +nodes.Assign.assigned_stmts = assign_assigned_stmts +nodes.AnnAssign.assigned_stmts = assign_annassigned_stmts +nodes.AugAssign.assigned_stmts = assign_assigned_stmts + + +def _resolve_assignment_parts(parts, assign_path, context): + """recursive function to resolve multiple assignments""" + assign_path = assign_path[:] + index = assign_path.pop(0) + for part in parts: + assigned = None + if isinstance(part, nodes.Dict): + # A dictionary in an iterating context + try: + assigned, _ = part.items[index] + except IndexError: + return + + elif hasattr(part, "getitem"): + index_node = nodes.Const(index) + try: + assigned = part.getitem(index_node, context) + except (exceptions.AstroidTypeError, exceptions.AstroidIndexError): + return + + if not assigned: + return + + if not assign_path: + # we achieved to resolved the assignment path, don't infer the + # last part + yield assigned + elif assigned is util.Uninferable: + return + else: + # we are not yet on the last part of the path search on each + # possibly inferred value + try: + yield from _resolve_assignment_parts( + assigned.infer(context), assign_path, context + ) + except exceptions.InferenceError: + return + + +@decorators.raise_if_nothing_inferred +def excepthandler_assigned_stmts(self, node=None, context=None, assign_path=None): + for assigned in node_classes.unpack_infer(self.type): + if isinstance(assigned, nodes.ClassDef): + assigned = objects.ExceptionInstance(assigned) + + yield assigned + return dict(node=self, unknown=node, assign_path=assign_path, context=context) + + +nodes.ExceptHandler.assigned_stmts = excepthandler_assigned_stmts + + +def _infer_context_manager(self, mgr, context): + inferred = next(mgr.infer(context=context)) + if isinstance(inferred, bases.Generator): + # Check if it is decorated with contextlib.contextmanager. + func = inferred.parent + if not func.decorators: + raise exceptions.InferenceError( + "No decorators found on inferred generator %s", node=func + ) + + for decorator_node in func.decorators.nodes: + decorator = next(decorator_node.infer(context)) + if isinstance(decorator, nodes.FunctionDef): + if decorator.qname() == _CONTEXTLIB_MGR: + break + else: + # It doesn't interest us. + raise exceptions.InferenceError(node=func) + + # Get the first yield point. If it has multiple yields, + # then a RuntimeError will be raised. + + possible_yield_points = func.nodes_of_class(nodes.Yield) + # Ignore yields in nested functions + yield_point = next( + (node for node in possible_yield_points if node.scope() == func), None + ) + if yield_point: + if not yield_point.value: + const = nodes.Const(None) + const.parent = yield_point + const.lineno = yield_point.lineno + yield const + else: + yield from yield_point.value.infer(context=context) + elif isinstance(inferred, bases.Instance): + try: + enter = next(inferred.igetattr("__enter__", context=context)) + except (exceptions.InferenceError, exceptions.AttributeInferenceError): + raise exceptions.InferenceError(node=inferred) + if not isinstance(enter, bases.BoundMethod): + raise exceptions.InferenceError(node=enter) + yield from enter.infer_call_result(self, context) + else: + raise exceptions.InferenceError(node=mgr) + + +@decorators.raise_if_nothing_inferred +def with_assigned_stmts(self, node=None, context=None, assign_path=None): + """Infer names and other nodes from a *with* statement. + + This enables only inference for name binding in a *with* statement. + For instance, in the following code, inferring `func` will return + the `ContextManager` class, not whatever ``__enter__`` returns. + We are doing this intentionally, because we consider that the context + manager result is whatever __enter__ returns and what it is binded + using the ``as`` keyword. + + class ContextManager(object): + def __enter__(self): + return 42 + with ContextManager() as f: + pass + + # ContextManager().infer() will return ContextManager + # f.infer() will return 42. + + Arguments: + self: nodes.With + node: The target of the assignment, `as (a, b)` in `with foo as (a, b)`. + context: Inference context used for caching already inferred objects + assign_path: + A list of indices, where each index specifies what item to fetch from + the inference results. + """ + try: + mgr = next(mgr for (mgr, vars) in self.items if vars == node) + except StopIteration: + return None + if assign_path is None: + yield from _infer_context_manager(self, mgr, context) + else: + for result in _infer_context_manager(self, mgr, context): + # Walk the assign_path and get the item at the final index. + obj = result + for index in assign_path: + if not hasattr(obj, "elts"): + raise exceptions.InferenceError( + "Wrong type ({targets!r}) for {node!r} assignment", + node=self, + targets=node, + assign_path=assign_path, + context=context, + ) + try: + obj = obj.elts[index] + except IndexError as exc: + raise exceptions.InferenceError( + "Tried to infer a nonexistent target with index {index} " + "in {node!r}.", + node=self, + targets=node, + assign_path=assign_path, + context=context, + ) from exc + except TypeError as exc: + raise exceptions.InferenceError( + "Tried to unpack a non-iterable value " "in {node!r}.", + node=self, + targets=node, + assign_path=assign_path, + context=context, + ) from exc + yield obj + return dict(node=self, unknown=node, assign_path=assign_path, context=context) + + +nodes.With.assigned_stmts = with_assigned_stmts + + +@decorators.raise_if_nothing_inferred +def named_expr_assigned_stmts(self, node, context=None, assign_path=None): + """Infer names and other nodes from an assignment expression""" + if self.target == node: + yield from self.value.infer(context=context) + else: + raise exceptions.InferenceError( + "Cannot infer NamedExpr node {node!r}", + node=self, + assign_path=assign_path, + context=context, + ) + + +nodes.NamedExpr.assigned_stmts = named_expr_assigned_stmts + + +@decorators.yes_if_nothing_inferred +def starred_assigned_stmts(self, node=None, context=None, assign_path=None): + """ + Arguments: + self: nodes.Starred + node: a node related to the current underlying Node. + context: Inference context used for caching already inferred objects + assign_path: + A list of indices, where each index specifies what item to fetch from + the inference results. + """ + # pylint: disable=too-many-locals,too-many-branches,too-many-statements + def _determine_starred_iteration_lookups(starred, target, lookups): + # Determine the lookups for the rhs of the iteration + itered = target.itered() + for index, element in enumerate(itered): + if ( + isinstance(element, nodes.Starred) + and element.value.name == starred.value.name + ): + lookups.append((index, len(itered))) + break + if isinstance(element, nodes.Tuple): + lookups.append((index, len(element.itered()))) + _determine_starred_iteration_lookups(starred, element, lookups) + + stmt = self.statement() + if not isinstance(stmt, (nodes.Assign, nodes.For)): + raise exceptions.InferenceError( + "Statement {stmt!r} enclosing {node!r} " "must be an Assign or For node.", + node=self, + stmt=stmt, + unknown=node, + context=context, + ) + + if context is None: + context = contextmod.InferenceContext() + + if isinstance(stmt, nodes.Assign): + value = stmt.value + lhs = stmt.targets[0] + + if sum(1 for _ in lhs.nodes_of_class(nodes.Starred)) > 1: + raise exceptions.InferenceError( + "Too many starred arguments in the " " assignment targets {lhs!r}.", + node=self, + targets=lhs, + unknown=node, + context=context, + ) + + try: + rhs = next(value.infer(context)) + except exceptions.InferenceError: + yield util.Uninferable + return + if rhs is util.Uninferable or not hasattr(rhs, "itered"): + yield util.Uninferable + return + + try: + elts = collections.deque(rhs.itered()) + except TypeError: + yield util.Uninferable + return + + # Unpack iteratively the values from the rhs of the assignment, + # until the find the starred node. What will remain will + # be the list of values which the Starred node will represent + # This is done in two steps, from left to right to remove + # anything before the starred node and from right to left + # to remove anything after the starred node. + + for index, left_node in enumerate(lhs.elts): + if not isinstance(left_node, nodes.Starred): + if not elts: + break + elts.popleft() + continue + lhs_elts = collections.deque(reversed(lhs.elts[index:])) + for right_node in lhs_elts: + if not isinstance(right_node, nodes.Starred): + if not elts: + break + elts.pop() + continue + # We're done + packed = nodes.List( + ctx=Store, parent=self, lineno=lhs.lineno, col_offset=lhs.col_offset + ) + packed.postinit(elts=elts) + yield packed + break + + if isinstance(stmt, nodes.For): + try: + inferred_iterable = next(stmt.iter.infer(context=context)) + except exceptions.InferenceError: + yield util.Uninferable + return + if inferred_iterable is util.Uninferable or not hasattr( + inferred_iterable, "itered" + ): + yield util.Uninferable + return + try: + itered = inferred_iterable.itered() + except TypeError: + yield util.Uninferable + return + + target = stmt.target + + if not isinstance(target, nodes.Tuple): + raise exceptions.InferenceError( + "Could not make sense of this, the target must be a tuple", + context=context, + ) + + lookups = [] + _determine_starred_iteration_lookups(self, target, lookups) + if not lookups: + raise exceptions.InferenceError( + "Could not make sense of this, needs at least a lookup", context=context + ) + + # Make the last lookup a slice, since that what we want for a Starred node + last_element_index, last_element_length = lookups[-1] + is_starred_last = last_element_index == (last_element_length - 1) + + lookup_slice = slice( + last_element_index, + None if is_starred_last else (last_element_length - last_element_index), + ) + lookups[-1] = lookup_slice + + for element in itered: + + # We probably want to infer the potential values *for each* element in an + # iterable, but we can't infer a list of all values, when only a list of + # step values are expected: + # + # for a, *b in [...]: + # b + # + # *b* should now point to just the elements at that particular iteration step, + # which astroid can't know about. + + found_element = None + for lookup in lookups: + if not hasattr(element, "itered"): + break + if not isinstance(lookup, slice): + # Grab just the index, not the whole length + lookup = lookup[0] + try: + itered_inner_element = element.itered() + element = itered_inner_element[lookup] + except IndexError: + break + except TypeError: + # Most likely the itered() call failed, cannot make sense of this + yield util.Uninferable + return + else: + found_element = element + + unpacked = nodes.List( + ctx=Store, parent=self, lineno=self.lineno, col_offset=self.col_offset + ) + unpacked.postinit(elts=found_element or []) + yield unpacked + return + + yield util.Uninferable + + +nodes.Starred.assigned_stmts = starred_assigned_stmts diff --git a/venv/Lib/site-packages/astroid/raw_building.py b/venv/Lib/site-packages/astroid/raw_building.py new file mode 100644 index 0000000..d94f924 --- /dev/null +++ b/venv/Lib/site-packages/astroid/raw_building.py @@ -0,0 +1,468 @@ +# Copyright (c) 2006-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2012 FELD Boris +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Google, Inc. +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2015 Ovidiu Sabou +# Copyright (c) 2016 Derek Gustafson +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""this module contains a set of functions to create astroid trees from scratch +(build_* functions) or from living object (object_build_* functions) +""" + +import builtins +import inspect +import os +import sys +import types + +from astroid import bases +from astroid import manager +from astroid import node_classes +from astroid import nodes + + +MANAGER = manager.AstroidManager() +# the keys of CONST_CLS eg python builtin types + +_CONSTANTS = tuple(node_classes.CONST_CLS) +_BUILTINS = vars(builtins) +TYPE_NONE = type(None) +TYPE_NOTIMPLEMENTED = type(NotImplemented) +TYPE_ELLIPSIS = type(...) + + +def _io_discrepancy(member): + # _io module names itself `io`: http://bugs.python.org/issue18602 + member_self = getattr(member, "__self__", None) + return ( + member_self + and inspect.ismodule(member_self) + and member_self.__name__ == "_io" + and member.__module__ == "io" + ) + + +def _attach_local_node(parent, node, name): + node.name = name # needed by add_local_node + parent.add_local_node(node) + + +def _add_dunder_class(func, member): + """Add a __class__ member to the given func node, if we can determine it.""" + python_cls = member.__class__ + cls_name = getattr(python_cls, "__name__", None) + if not cls_name: + return + cls_bases = [ancestor.__name__ for ancestor in python_cls.__bases__] + ast_klass = build_class(cls_name, cls_bases, python_cls.__doc__) + func.instance_attrs["__class__"] = [ast_klass] + + +_marker = object() + + +def attach_dummy_node(node, name, runtime_object=_marker): + """create a dummy node and register it in the locals of the given + node with the specified name + """ + enode = nodes.EmptyNode() + enode.object = runtime_object + _attach_local_node(node, enode, name) + + +def _has_underlying_object(self): + return self.object is not None and self.object is not _marker + + +nodes.EmptyNode.has_underlying_object = _has_underlying_object + + +def attach_const_node(node, name, value): + """create a Const node and register it in the locals of the given + node with the specified name + """ + if name not in node.special_attributes: + _attach_local_node(node, nodes.const_factory(value), name) + + +def attach_import_node(node, modname, membername): + """create a ImportFrom node and register it in the locals of the given + node with the specified name + """ + from_node = nodes.ImportFrom(modname, [(membername, None)]) + _attach_local_node(node, from_node, membername) + + +def build_module(name, doc=None): + """create and initialize an astroid Module node""" + node = nodes.Module(name, doc, pure_python=False) + node.package = False + node.parent = None + return node + + +def build_class(name, basenames=(), doc=None): + """create and initialize an astroid ClassDef node""" + node = nodes.ClassDef(name, doc) + for base in basenames: + basenode = nodes.Name() + basenode.name = base + node.bases.append(basenode) + basenode.parent = node + return node + + +def build_function(name, args=None, posonlyargs=None, defaults=None, doc=None): + """create and initialize an astroid FunctionDef node""" + args, defaults, posonlyargs = args or [], defaults or [], posonlyargs or [] + # first argument is now a list of decorators + func = nodes.FunctionDef(name, doc) + func.args = argsnode = nodes.Arguments() + argsnode.args = [] + argsnode.posonlyargs = [] + for arg in args: + argsnode.args.append(nodes.Name()) + argsnode.args[-1].name = arg + argsnode.args[-1].parent = argsnode + for arg in posonlyargs: + argsnode.posonlyargs.append(nodes.Name()) + argsnode.posonlyargs[-1].name = arg + argsnode.posonlyargs[-1].parent = argsnode + argsnode.defaults = [] + for default in defaults: + argsnode.defaults.append(nodes.const_factory(default)) + argsnode.defaults[-1].parent = argsnode + argsnode.kwarg = None + argsnode.vararg = None + argsnode.parent = func + if args: + register_arguments(func) + return func + + +def build_from_import(fromname, names): + """create and initialize an astroid ImportFrom import statement""" + return nodes.ImportFrom(fromname, [(name, None) for name in names]) + + +def register_arguments(func, args=None): + """add given arguments to local + + args is a list that may contains nested lists + (i.e. def func(a, (b, c, d)): ...) + """ + if args is None: + args = func.args.args + if func.args.vararg: + func.set_local(func.args.vararg, func.args) + if func.args.kwarg: + func.set_local(func.args.kwarg, func.args) + for arg in args: + if isinstance(arg, nodes.Name): + func.set_local(arg.name, arg) + else: + register_arguments(func, arg.elts) + + +def object_build_class(node, member, localname): + """create astroid for a living class object""" + basenames = [base.__name__ for base in member.__bases__] + return _base_class_object_build(node, member, basenames, localname=localname) + + +def object_build_function(node, member, localname): + """create astroid for a living function object""" + signature = inspect.signature(member) + args = [] + defaults = [] + posonlyargs = [] + for param_name, param in signature.parameters.items(): + if param.kind == inspect.Parameter.POSITIONAL_ONLY: + posonlyargs.append(param_name) + elif param.kind == inspect.Parameter.POSITIONAL_OR_KEYWORD: + args.append(param_name) + elif param.kind == inspect.Parameter.VAR_POSITIONAL: + args.append(param_name) + elif param.kind == inspect.Parameter.VAR_KEYWORD: + args.append(param_name) + if param.default is not inspect._empty: + defaults.append(param.default) + func = build_function( + getattr(member, "__name__", None) or localname, + args, + posonlyargs, + defaults, + member.__doc__, + ) + node.add_local_node(func, localname) + + +def object_build_datadescriptor(node, member, name): + """create astroid for a living data descriptor object""" + return _base_class_object_build(node, member, [], name) + + +def object_build_methoddescriptor(node, member, localname): + """create astroid for a living method descriptor object""" + # FIXME get arguments ? + func = build_function( + getattr(member, "__name__", None) or localname, doc=member.__doc__ + ) + # set node's arguments to None to notice that we have no information, not + # and empty argument list + func.args.args = None + node.add_local_node(func, localname) + _add_dunder_class(func, member) + + +def _base_class_object_build(node, member, basenames, name=None, localname=None): + """create astroid for a living class object, with a given set of base names + (e.g. ancestors) + """ + klass = build_class( + name or getattr(member, "__name__", None) or localname, + basenames, + member.__doc__, + ) + klass._newstyle = isinstance(member, type) + node.add_local_node(klass, localname) + try: + # limit the instantiation trick since it's too dangerous + # (such as infinite test execution...) + # this at least resolves common case such as Exception.args, + # OSError.errno + if issubclass(member, Exception): + instdict = member().__dict__ + else: + raise TypeError + except TypeError: + pass + else: + for item_name, obj in instdict.items(): + valnode = nodes.EmptyNode() + valnode.object = obj + valnode.parent = klass + valnode.lineno = 1 + klass.instance_attrs[item_name] = [valnode] + return klass + + +def _build_from_function(node, name, member, module): + # verify this is not an imported function + try: + code = member.__code__ + except AttributeError: + # Some implementations don't provide the code object, + # such as Jython. + code = None + filename = getattr(code, "co_filename", None) + if filename is None: + assert isinstance(member, object) + object_build_methoddescriptor(node, member, name) + elif filename != getattr(module, "__file__", None): + attach_dummy_node(node, name, member) + else: + object_build_function(node, member, name) + + +class InspectBuilder: + """class for building nodes from living object + + this is actually a really minimal representation, including only Module, + FunctionDef and ClassDef nodes and some others as guessed. + """ + + def __init__(self): + self._done = {} + self._module = None + + def inspect_build(self, module, modname=None, path=None): + """build astroid from a living module (i.e. using inspect) + this is used when there is no python source code available (either + because it's a built-in module or because the .py is not available) + """ + self._module = module + if modname is None: + modname = module.__name__ + try: + node = build_module(modname, module.__doc__) + except AttributeError: + # in jython, java modules have no __doc__ (see #109562) + node = build_module(modname) + node.file = node.path = os.path.abspath(path) if path else path + node.name = modname + MANAGER.cache_module(node) + node.package = hasattr(module, "__path__") + self._done = {} + self.object_build(node, module) + return node + + def object_build(self, node, obj): + """recursive method which create a partial ast from real objects + (only function, class, and method are handled) + """ + if obj in self._done: + return self._done[obj] + self._done[obj] = node + for name in dir(obj): + try: + member = getattr(obj, name) + except AttributeError: + # damned ExtensionClass.Base, I know you're there ! + attach_dummy_node(node, name) + continue + if inspect.ismethod(member): + member = member.__func__ + if inspect.isfunction(member): + _build_from_function(node, name, member, self._module) + elif inspect.isbuiltin(member): + if not _io_discrepancy(member) and self.imported_member( + node, member, name + ): + continue + object_build_methoddescriptor(node, member, name) + elif inspect.isclass(member): + if self.imported_member(node, member, name): + continue + if member in self._done: + class_node = self._done[member] + if class_node not in node.locals.get(name, ()): + node.add_local_node(class_node, name) + else: + class_node = object_build_class(node, member, name) + # recursion + self.object_build(class_node, member) + if name == "__class__" and class_node.parent is None: + class_node.parent = self._done[self._module] + elif inspect.ismethoddescriptor(member): + assert isinstance(member, object) + object_build_methoddescriptor(node, member, name) + elif inspect.isdatadescriptor(member): + assert isinstance(member, object) + object_build_datadescriptor(node, member, name) + elif isinstance(member, _CONSTANTS): + attach_const_node(node, name, member) + elif inspect.isroutine(member): + # This should be called for Jython, where some builtin + # methods aren't caught by isbuiltin branch. + _build_from_function(node, name, member, self._module) + else: + # create an empty node so that the name is actually defined + attach_dummy_node(node, name, member) + return None + + def imported_member(self, node, member, name): + """verify this is not an imported class or handle it""" + # /!\ some classes like ExtensionClass doesn't have a __module__ + # attribute ! Also, this may trigger an exception on badly built module + # (see http://www.logilab.org/ticket/57299 for instance) + try: + modname = getattr(member, "__module__", None) + except TypeError: + modname = None + if modname is None: + if name in ("__new__", "__subclasshook__"): + # Python 2.5.1 (r251:54863, Sep 1 2010, 22:03:14) + # >>> print object.__new__.__module__ + # None + modname = builtins.__name__ + else: + attach_dummy_node(node, name, member) + return True + + real_name = {"gtk": "gtk_gtk", "_io": "io"}.get(modname, modname) + + if real_name != self._module.__name__: + # check if it sounds valid and then add an import node, else use a + # dummy node + try: + getattr(sys.modules[modname], name) + except (KeyError, AttributeError): + attach_dummy_node(node, name, member) + else: + attach_import_node(node, modname, name) + return True + return False + + +### astroid bootstrapping ###################################################### + +_CONST_PROXY = {} + +# TODO : find a nicer way to handle this situation; +def _set_proxied(const): + return _CONST_PROXY[const.value.__class__] + + +def _astroid_bootstrapping(): + """astroid bootstrapping the builtins module""" + # this boot strapping is necessary since we need the Const nodes to + # inspect_build builtins, and then we can proxy Const + builder = InspectBuilder() + astroid_builtin = builder.inspect_build(builtins) + + # pylint: disable=redefined-outer-name + for cls, node_cls in node_classes.CONST_CLS.items(): + if cls is TYPE_NONE: + proxy = build_class("NoneType") + proxy.parent = astroid_builtin + elif cls is TYPE_NOTIMPLEMENTED: + proxy = build_class("NotImplementedType") + proxy.parent = astroid_builtin + elif cls is TYPE_ELLIPSIS: + proxy = build_class("Ellipsis") + proxy.parent = astroid_builtin + else: + proxy = astroid_builtin.getattr(cls.__name__)[0] + if cls in (dict, list, set, tuple): + node_cls._proxied = proxy + else: + _CONST_PROXY[cls] = proxy + + # Set the builtin module as parent for some builtins. + nodes.Const._proxied = property(_set_proxied) + + _GeneratorType = nodes.ClassDef( + types.GeneratorType.__name__, types.GeneratorType.__doc__ + ) + _GeneratorType.parent = astroid_builtin + bases.Generator._proxied = _GeneratorType + builder.object_build(bases.Generator._proxied, types.GeneratorType) + + if hasattr(types, "AsyncGeneratorType"): + # pylint: disable=no-member; AsyncGeneratorType + _AsyncGeneratorType = nodes.ClassDef( + types.AsyncGeneratorType.__name__, types.AsyncGeneratorType.__doc__ + ) + _AsyncGeneratorType.parent = astroid_builtin + bases.AsyncGenerator._proxied = _AsyncGeneratorType + builder.object_build(bases.AsyncGenerator._proxied, types.AsyncGeneratorType) + builtin_types = ( + types.GetSetDescriptorType, + types.GeneratorType, + types.MemberDescriptorType, + TYPE_NONE, + TYPE_NOTIMPLEMENTED, + types.FunctionType, + types.MethodType, + types.BuiltinFunctionType, + types.ModuleType, + types.TracebackType, + ) + for _type in builtin_types: + if _type.__name__ not in astroid_builtin: + cls = nodes.ClassDef(_type.__name__, _type.__doc__) + cls.parent = astroid_builtin + builder.object_build(cls, _type) + astroid_builtin[_type.__name__] = cls + + +_astroid_bootstrapping() diff --git a/venv/Lib/site-packages/astroid/rebuilder.py b/venv/Lib/site-packages/astroid/rebuilder.py new file mode 100644 index 0000000..fb78f7b --- /dev/null +++ b/venv/Lib/site-packages/astroid/rebuilder.py @@ -0,0 +1,1090 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2009-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2013-2018 Claudiu Popa +# Copyright (c) 2013-2014 Google, Inc. +# Copyright (c) 2014 Alexander Presnyakov +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2016-2017 Derek Gustafson +# Copyright (c) 2016 Jared Garst +# Copyright (c) 2017 Hugo +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2017 rr- +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 Bryce Guinta + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""this module contains utilities for rebuilding a _ast tree in +order to get a single Astroid representation +""" + +import sys + +import astroid +from astroid._ast import _parse, _get_parser_module, parse_function_type_comment +from astroid import nodes + + +CONST_NAME_TRANSFORMS = {"None": None, "True": True, "False": False} + +REDIRECT = { + "arguments": "Arguments", + "comprehension": "Comprehension", + "ListCompFor": "Comprehension", + "GenExprFor": "Comprehension", + "excepthandler": "ExceptHandler", + "keyword": "Keyword", +} +PY37 = sys.version_info >= (3, 7) +PY38 = sys.version_info >= (3, 8) + + +def _binary_operators_from_module(module): + binary_operators = { + module.Add: "+", + module.BitAnd: "&", + module.BitOr: "|", + module.BitXor: "^", + module.Div: "/", + module.FloorDiv: "//", + module.MatMult: "@", + module.Mod: "%", + module.Mult: "*", + module.Pow: "**", + module.Sub: "-", + module.LShift: "<<", + module.RShift: ">>", + } + return binary_operators + + +def _bool_operators_from_module(module): + return {module.And: "and", module.Or: "or"} + + +def _unary_operators_from_module(module): + return {module.UAdd: "+", module.USub: "-", module.Not: "not", module.Invert: "~"} + + +def _compare_operators_from_module(module): + return { + module.Eq: "==", + module.Gt: ">", + module.GtE: ">=", + module.In: "in", + module.Is: "is", + module.IsNot: "is not", + module.Lt: "<", + module.LtE: "<=", + module.NotEq: "!=", + module.NotIn: "not in", + } + + +def _contexts_from_module(module): + return { + module.Load: astroid.Load, + module.Store: astroid.Store, + module.Del: astroid.Del, + module.Param: astroid.Store, + } + + +def _visit_or_none(node, attr, visitor, parent, visit="visit", **kws): + """If the given node has an attribute, visits the attribute, and + otherwise returns None. + + """ + value = getattr(node, attr, None) + if value: + return getattr(visitor, visit)(value, parent, **kws) + + return None + + +class TreeRebuilder: + """Rebuilds the _ast tree to become an Astroid tree""" + + def __init__(self, manager, parse_python_two: bool = False): + self._manager = manager + self._global_names = [] + self._import_from_nodes = [] + self._delayed_assattr = [] + self._visit_meths = {} + + # Configure the right classes for the right module + self._parser_module = _get_parser_module(parse_python_two=parse_python_two) + self._unary_op_classes = _unary_operators_from_module(self._parser_module) + self._cmp_op_classes = _compare_operators_from_module(self._parser_module) + self._bool_op_classes = _bool_operators_from_module(self._parser_module) + self._bin_op_classes = _binary_operators_from_module(self._parser_module) + self._context_classes = _contexts_from_module(self._parser_module) + + def _get_doc(self, node): + try: + if PY37 and hasattr(node, "docstring"): + doc = node.docstring + return node, doc + if node.body and isinstance(node.body[0], self._parser_module.Expr): + + first_value = node.body[0].value + if isinstance(first_value, self._parser_module.Str) or ( + PY38 + and isinstance(first_value, self._parser_module.Constant) + and isinstance(first_value.value, str) + ): + doc = first_value.value if PY38 else first_value.s + node.body = node.body[1:] + return node, doc + except IndexError: + pass # ast built from scratch + return node, None + + def _get_context(self, node): + return self._context_classes.get(type(node.ctx), astroid.Load) + + def visit_module(self, node, modname, modpath, package): + """visit a Module node by returning a fresh instance of it""" + node, doc = self._get_doc(node) + newnode = nodes.Module( + name=modname, + doc=doc, + file=modpath, + path=[modpath], + package=package, + parent=None, + ) + newnode.postinit([self.visit(child, newnode) for child in node.body]) + return newnode + + def visit(self, node, parent): + cls = node.__class__ + if cls in self._visit_meths: + visit_method = self._visit_meths[cls] + else: + cls_name = cls.__name__ + visit_name = "visit_" + REDIRECT.get(cls_name, cls_name).lower() + visit_method = getattr(self, visit_name) + self._visit_meths[cls] = visit_method + return visit_method(node, parent) + + def _save_assignment(self, node, name=None): + """save assignement situation since node.parent is not available yet""" + if self._global_names and node.name in self._global_names[-1]: + node.root().set_local(node.name, node) + else: + node.parent.set_local(node.name, node) + + def visit_arguments(self, node, parent): + """visit an Arguments node by returning a fresh instance of it""" + vararg, kwarg = node.vararg, node.kwarg + newnode = nodes.Arguments( + vararg.arg if vararg else None, kwarg.arg if kwarg else None, parent + ) + args = [self.visit(child, newnode) for child in node.args] + defaults = [self.visit(child, newnode) for child in node.defaults] + varargannotation = None + kwargannotation = None + posonlyargs = [] + # change added in 82732 (7c5c678e4164), vararg and kwarg + # are instances of `_ast.arg`, not strings + if vararg: + if node.vararg.annotation: + varargannotation = self.visit(node.vararg.annotation, newnode) + vararg = vararg.arg + if kwarg: + if node.kwarg.annotation: + kwargannotation = self.visit(node.kwarg.annotation, newnode) + kwarg = kwarg.arg + kwonlyargs = [self.visit(child, newnode) for child in node.kwonlyargs] + kw_defaults = [ + self.visit(child, newnode) if child else None for child in node.kw_defaults + ] + annotations = [ + self.visit(arg.annotation, newnode) if arg.annotation else None + for arg in node.args + ] + kwonlyargs_annotations = [ + self.visit(arg.annotation, newnode) if arg.annotation else None + for arg in node.kwonlyargs + ] + + posonlyargs_annotations = [] + if PY38: + posonlyargs = [self.visit(child, newnode) for child in node.posonlyargs] + posonlyargs_annotations = [ + self.visit(arg.annotation, newnode) if arg.annotation else None + for arg in node.posonlyargs + ] + type_comment_args = [ + self.check_type_comment(child, parent=newnode) for child in node.args + ] + + newnode.postinit( + args=args, + defaults=defaults, + kwonlyargs=kwonlyargs, + posonlyargs=posonlyargs, + kw_defaults=kw_defaults, + annotations=annotations, + kwonlyargs_annotations=kwonlyargs_annotations, + posonlyargs_annotations=posonlyargs_annotations, + varargannotation=varargannotation, + kwargannotation=kwargannotation, + type_comment_args=type_comment_args, + ) + # save argument names in locals: + if vararg: + newnode.parent.set_local(vararg, newnode) + if kwarg: + newnode.parent.set_local(kwarg, newnode) + return newnode + + def visit_assert(self, node, parent): + """visit a Assert node by returning a fresh instance of it""" + newnode = nodes.Assert(node.lineno, node.col_offset, parent) + if node.msg: + msg = self.visit(node.msg, newnode) + else: + msg = None + newnode.postinit(self.visit(node.test, newnode), msg) + return newnode + + def check_type_comment(self, node, parent): + type_comment = getattr(node, "type_comment", None) + if not type_comment: + return None + + try: + type_comment_ast = _parse(type_comment) + except SyntaxError: + # Invalid type comment, just skip it. + return None + + type_object = self.visit(type_comment_ast.body[0], parent=parent) + if not isinstance(type_object, nodes.Expr): + return None + + return type_object.value + + def check_function_type_comment(self, node): + type_comment = getattr(node, "type_comment", None) + if not type_comment: + return None + + try: + type_comment_ast = parse_function_type_comment(type_comment) + except SyntaxError: + # Invalid type comment, just skip it. + return None + + returns = None + argtypes = [ + self.visit(elem, node) for elem in (type_comment_ast.argtypes or []) + ] + if type_comment_ast.returns: + returns = self.visit(type_comment_ast.returns, node) + + return returns, argtypes + + def visit_assign(self, node, parent): + """visit a Assign node by returning a fresh instance of it""" + newnode = nodes.Assign(node.lineno, node.col_offset, parent) + type_annotation = self.check_type_comment(node, parent=newnode) + newnode.postinit( + targets=[self.visit(child, newnode) for child in node.targets], + value=self.visit(node.value, newnode), + type_annotation=type_annotation, + ) + return newnode + + def visit_assignname(self, node, parent, node_name=None): + """visit a node and return a AssignName node""" + newnode = nodes.AssignName( + node_name, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + self._save_assignment(newnode) + return newnode + + def visit_augassign(self, node, parent): + """visit a AugAssign node by returning a fresh instance of it""" + newnode = nodes.AugAssign( + self._bin_op_classes[type(node.op)] + "=", + node.lineno, + node.col_offset, + parent, + ) + newnode.postinit( + self.visit(node.target, newnode), self.visit(node.value, newnode) + ) + return newnode + + def visit_repr(self, node, parent): + """visit a Backquote node by returning a fresh instance of it""" + newnode = nodes.Repr(node.lineno, node.col_offset, parent) + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + def visit_binop(self, node, parent): + """visit a BinOp node by returning a fresh instance of it""" + newnode = nodes.BinOp( + self._bin_op_classes[type(node.op)], node.lineno, node.col_offset, parent + ) + newnode.postinit( + self.visit(node.left, newnode), self.visit(node.right, newnode) + ) + return newnode + + def visit_boolop(self, node, parent): + """visit a BoolOp node by returning a fresh instance of it""" + newnode = nodes.BoolOp( + self._bool_op_classes[type(node.op)], node.lineno, node.col_offset, parent + ) + newnode.postinit([self.visit(child, newnode) for child in node.values]) + return newnode + + def visit_break(self, node, parent): + """visit a Break node by returning a fresh instance of it""" + return nodes.Break( + getattr(node, "lineno", None), getattr(node, "col_offset", None), parent + ) + + def visit_call(self, node, parent): + """visit a CallFunc node by returning a fresh instance of it""" + newnode = nodes.Call(node.lineno, node.col_offset, parent) + starargs = _visit_or_none(node, "starargs", self, newnode) + kwargs = _visit_or_none(node, "kwargs", self, newnode) + args = [self.visit(child, newnode) for child in node.args] + + if node.keywords: + keywords = [self.visit(child, newnode) for child in node.keywords] + else: + keywords = None + if starargs: + new_starargs = nodes.Starred( + col_offset=starargs.col_offset, + lineno=starargs.lineno, + parent=starargs.parent, + ) + new_starargs.postinit(value=starargs) + args.append(new_starargs) + if kwargs: + new_kwargs = nodes.Keyword( + arg=None, + col_offset=kwargs.col_offset, + lineno=kwargs.lineno, + parent=kwargs.parent, + ) + new_kwargs.postinit(value=kwargs) + if keywords: + keywords.append(new_kwargs) + else: + keywords = [new_kwargs] + + newnode.postinit(self.visit(node.func, newnode), args, keywords) + return newnode + + def visit_classdef(self, node, parent, newstyle=None): + """visit a ClassDef node to become astroid""" + node, doc = self._get_doc(node) + newnode = nodes.ClassDef(node.name, doc, node.lineno, node.col_offset, parent) + metaclass = None + for keyword in node.keywords: + if keyword.arg == "metaclass": + metaclass = self.visit(keyword, newnode).value + break + if node.decorator_list: + decorators = self.visit_decorators(node, newnode) + else: + decorators = None + newnode.postinit( + [self.visit(child, newnode) for child in node.bases], + [self.visit(child, newnode) for child in node.body], + decorators, + newstyle, + metaclass, + [ + self.visit(kwd, newnode) + for kwd in node.keywords + if kwd.arg != "metaclass" + ], + ) + return newnode + + def visit_const(self, node, parent): + """visit a Const node by returning a fresh instance of it""" + return nodes.Const( + node.value, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + + def visit_continue(self, node, parent): + """visit a Continue node by returning a fresh instance of it""" + return nodes.Continue( + getattr(node, "lineno", None), getattr(node, "col_offset", None), parent + ) + + def visit_compare(self, node, parent): + """visit a Compare node by returning a fresh instance of it""" + newnode = nodes.Compare(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.left, newnode), + [ + (self._cmp_op_classes[op.__class__], self.visit(expr, newnode)) + for (op, expr) in zip(node.ops, node.comparators) + ], + ) + return newnode + + def visit_comprehension(self, node, parent): + """visit a Comprehension node by returning a fresh instance of it""" + newnode = nodes.Comprehension(parent) + newnode.postinit( + self.visit(node.target, newnode), + self.visit(node.iter, newnode), + [self.visit(child, newnode) for child in node.ifs], + getattr(node, "is_async", None), + ) + return newnode + + def visit_decorators(self, node, parent): + """visit a Decorators node by returning a fresh instance of it""" + # /!\ node is actually a _ast.FunctionDef node while + # parent is an astroid.nodes.FunctionDef node + if PY38: + # Set the line number of the first decorator for Python 3.8+. + lineno = node.decorator_list[0].lineno + else: + lineno = node.lineno + newnode = nodes.Decorators(lineno, node.col_offset, parent) + newnode.postinit([self.visit(child, newnode) for child in node.decorator_list]) + return newnode + + def visit_delete(self, node, parent): + """visit a Delete node by returning a fresh instance of it""" + newnode = nodes.Delete(node.lineno, node.col_offset, parent) + newnode.postinit([self.visit(child, newnode) for child in node.targets]) + return newnode + + def _visit_dict_items(self, node, parent, newnode): + for key, value in zip(node.keys, node.values): + rebuilt_value = self.visit(value, newnode) + if not key: + # Python 3.5 and extended unpacking + rebuilt_key = nodes.DictUnpack( + rebuilt_value.lineno, rebuilt_value.col_offset, parent + ) + else: + rebuilt_key = self.visit(key, newnode) + yield rebuilt_key, rebuilt_value + + def visit_dict(self, node, parent): + """visit a Dict node by returning a fresh instance of it""" + newnode = nodes.Dict(node.lineno, node.col_offset, parent) + items = list(self._visit_dict_items(node, parent, newnode)) + newnode.postinit(items) + return newnode + + def visit_dictcomp(self, node, parent): + """visit a DictComp node by returning a fresh instance of it""" + newnode = nodes.DictComp(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.key, newnode), + self.visit(node.value, newnode), + [self.visit(child, newnode) for child in node.generators], + ) + return newnode + + def visit_expr(self, node, parent): + """visit a Expr node by returning a fresh instance of it""" + newnode = nodes.Expr(node.lineno, node.col_offset, parent) + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + # Not used in Python 3.8+. + def visit_ellipsis(self, node, parent): + """visit an Ellipsis node by returning a fresh instance of it""" + return nodes.Ellipsis( + getattr(node, "lineno", None), getattr(node, "col_offset", None), parent + ) + + def visit_emptynode(self, node, parent): + """visit an EmptyNode node by returning a fresh instance of it""" + return nodes.EmptyNode( + getattr(node, "lineno", None), getattr(node, "col_offset", None), parent + ) + + def visit_excepthandler(self, node, parent): + """visit an ExceptHandler node by returning a fresh instance of it""" + newnode = nodes.ExceptHandler(node.lineno, node.col_offset, parent) + # /!\ node.name can be a tuple + newnode.postinit( + _visit_or_none(node, "type", self, newnode), + _visit_or_none(node, "name", self, newnode), + [self.visit(child, newnode) for child in node.body], + ) + return newnode + + def visit_exec(self, node, parent): + """visit an Exec node by returning a fresh instance of it""" + newnode = nodes.Exec(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.body, newnode), + _visit_or_none(node, "globals", self, newnode), + _visit_or_none(node, "locals", self, newnode), + ) + return newnode + + # Not used in Python 3.8+. + def visit_extslice(self, node, parent): + """visit an ExtSlice node by returning a fresh instance of it""" + newnode = nodes.ExtSlice(parent=parent) + newnode.postinit([self.visit(dim, newnode) for dim in node.dims]) + return newnode + + def _visit_for(self, cls, node, parent): + """visit a For node by returning a fresh instance of it""" + newnode = cls(node.lineno, node.col_offset, parent) + type_annotation = self.check_type_comment(node, parent=newnode) + newnode.postinit( + target=self.visit(node.target, newnode), + iter=self.visit(node.iter, newnode), + body=[self.visit(child, newnode) for child in node.body], + orelse=[self.visit(child, newnode) for child in node.orelse], + type_annotation=type_annotation, + ) + return newnode + + def visit_for(self, node, parent): + return self._visit_for(nodes.For, node, parent) + + def visit_importfrom(self, node, parent): + """visit an ImportFrom node by returning a fresh instance of it""" + names = [(alias.name, alias.asname) for alias in node.names] + newnode = nodes.ImportFrom( + node.module or "", + names, + node.level or None, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + # store From names to add them to locals after building + self._import_from_nodes.append(newnode) + return newnode + + def _visit_functiondef(self, cls, node, parent): + """visit an FunctionDef node to become astroid""" + self._global_names.append({}) + node, doc = self._get_doc(node) + + lineno = node.lineno + if PY38 and node.decorator_list: + # Python 3.8 sets the line number of a decorated function + # to be the actual line number of the function, but the + # previous versions expected the decorator's line number instead. + # We reset the function's line number to that of the + # first decorator to maintain backward compatibility. + # It's not ideal but this discrepancy was baked into + # the framework for *years*. + lineno = node.decorator_list[0].lineno + + newnode = cls(node.name, doc, lineno, node.col_offset, parent) + if node.decorator_list: + decorators = self.visit_decorators(node, newnode) + else: + decorators = None + if node.returns: + returns = self.visit(node.returns, newnode) + else: + returns = None + + type_comment_args = type_comment_returns = None + type_comment_annotation = self.check_function_type_comment(node) + if type_comment_annotation: + type_comment_returns, type_comment_args = type_comment_annotation + newnode.postinit( + args=self.visit(node.args, newnode), + body=[self.visit(child, newnode) for child in node.body], + decorators=decorators, + returns=returns, + type_comment_returns=type_comment_returns, + type_comment_args=type_comment_args, + ) + self._global_names.pop() + return newnode + + def visit_functiondef(self, node, parent): + return self._visit_functiondef(nodes.FunctionDef, node, parent) + + def visit_generatorexp(self, node, parent): + """visit a GeneratorExp node by returning a fresh instance of it""" + newnode = nodes.GeneratorExp(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.elt, newnode), + [self.visit(child, newnode) for child in node.generators], + ) + return newnode + + def visit_attribute(self, node, parent): + """visit an Attribute node by returning a fresh instance of it""" + context = self._get_context(node) + if context == astroid.Del: + # FIXME : maybe we should reintroduce and visit_delattr ? + # for instance, deactivating assign_ctx + newnode = nodes.DelAttr(node.attr, node.lineno, node.col_offset, parent) + elif context == astroid.Store: + newnode = nodes.AssignAttr(node.attr, node.lineno, node.col_offset, parent) + # Prohibit a local save if we are in an ExceptHandler. + if not isinstance(parent, astroid.ExceptHandler): + self._delayed_assattr.append(newnode) + else: + newnode = nodes.Attribute(node.attr, node.lineno, node.col_offset, parent) + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + def visit_global(self, node, parent): + """visit a Global node to become astroid""" + newnode = nodes.Global( + node.names, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + if self._global_names: # global at the module level, no effect + for name in node.names: + self._global_names[-1].setdefault(name, []).append(newnode) + return newnode + + def visit_if(self, node, parent): + """visit an If node by returning a fresh instance of it""" + newnode = nodes.If(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.test, newnode), + [self.visit(child, newnode) for child in node.body], + [self.visit(child, newnode) for child in node.orelse], + ) + return newnode + + def visit_ifexp(self, node, parent): + """visit a IfExp node by returning a fresh instance of it""" + newnode = nodes.IfExp(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.test, newnode), + self.visit(node.body, newnode), + self.visit(node.orelse, newnode), + ) + return newnode + + def visit_import(self, node, parent): + """visit a Import node by returning a fresh instance of it""" + names = [(alias.name, alias.asname) for alias in node.names] + newnode = nodes.Import( + names, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + # save import names in parent's locals: + for (name, asname) in newnode.names: + name = asname or name + parent.set_local(name.split(".")[0], newnode) + return newnode + + # Not used in Python 3.8+. + def visit_index(self, node, parent): + """visit a Index node by returning a fresh instance of it""" + newnode = nodes.Index(parent=parent) + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + def visit_keyword(self, node, parent): + """visit a Keyword node by returning a fresh instance of it""" + newnode = nodes.Keyword(node.arg, parent=parent) + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + def visit_lambda(self, node, parent): + """visit a Lambda node by returning a fresh instance of it""" + newnode = nodes.Lambda(node.lineno, node.col_offset, parent) + newnode.postinit(self.visit(node.args, newnode), self.visit(node.body, newnode)) + return newnode + + def visit_list(self, node, parent): + """visit a List node by returning a fresh instance of it""" + context = self._get_context(node) + newnode = nodes.List( + ctx=context, lineno=node.lineno, col_offset=node.col_offset, parent=parent + ) + newnode.postinit([self.visit(child, newnode) for child in node.elts]) + return newnode + + def visit_listcomp(self, node, parent): + """visit a ListComp node by returning a fresh instance of it""" + newnode = nodes.ListComp(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.elt, newnode), + [self.visit(child, newnode) for child in node.generators], + ) + return newnode + + def visit_name(self, node, parent): + """visit a Name node by returning a fresh instance of it""" + context = self._get_context(node) + # True and False can be assigned to something in py2x, so we have to + # check first the context. + if context == astroid.Del: + newnode = nodes.DelName(node.id, node.lineno, node.col_offset, parent) + elif context == astroid.Store: + newnode = nodes.AssignName(node.id, node.lineno, node.col_offset, parent) + elif node.id in CONST_NAME_TRANSFORMS: + newnode = nodes.Const( + CONST_NAME_TRANSFORMS[node.id], + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + return newnode + else: + newnode = nodes.Name(node.id, node.lineno, node.col_offset, parent) + # XXX REMOVE me : + if context in (astroid.Del, astroid.Store): # 'Aug' ?? + self._save_assignment(newnode) + return newnode + + def visit_constant(self, node, parent): + """visit a Constant node by returning a fresh instance of Const""" + return nodes.Const( + node.value, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + + # Not used in Python 3.8+. + def visit_str(self, node, parent): + """visit a String/Bytes node by returning a fresh instance of Const""" + return nodes.Const( + node.s, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + + visit_bytes = visit_str + + # Not used in Python 3.8+. + def visit_num(self, node, parent): + """visit a Num node by returning a fresh instance of Const""" + return nodes.Const( + node.n, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + + def visit_pass(self, node, parent): + """visit a Pass node by returning a fresh instance of it""" + return nodes.Pass(node.lineno, node.col_offset, parent) + + def visit_print(self, node, parent): + """visit a Print node by returning a fresh instance of it""" + newnode = nodes.Print(node.nl, node.lineno, node.col_offset, parent) + newnode.postinit( + _visit_or_none(node, "dest", self, newnode), + [self.visit(child, newnode) for child in node.values], + ) + return newnode + + def visit_raise(self, node, parent): + """visit a Raise node by returning a fresh instance of it""" + newnode = nodes.Raise(node.lineno, node.col_offset, parent) + # pylint: disable=too-many-function-args + newnode.postinit( + _visit_or_none(node, "type", self, newnode), + _visit_or_none(node, "inst", self, newnode), + _visit_or_none(node, "tback", self, newnode), + ) + return newnode + + def visit_return(self, node, parent): + """visit a Return node by returning a fresh instance of it""" + newnode = nodes.Return(node.lineno, node.col_offset, parent) + if node.value is not None: + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + def visit_set(self, node, parent): + """visit a Set node by returning a fresh instance of it""" + newnode = nodes.Set(node.lineno, node.col_offset, parent) + newnode.postinit([self.visit(child, newnode) for child in node.elts]) + return newnode + + def visit_setcomp(self, node, parent): + """visit a SetComp node by returning a fresh instance of it""" + newnode = nodes.SetComp(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.elt, newnode), + [self.visit(child, newnode) for child in node.generators], + ) + return newnode + + def visit_slice(self, node, parent): + """visit a Slice node by returning a fresh instance of it""" + newnode = nodes.Slice(parent=parent) + newnode.postinit( + _visit_or_none(node, "lower", self, newnode), + _visit_or_none(node, "upper", self, newnode), + _visit_or_none(node, "step", self, newnode), + ) + return newnode + + def visit_subscript(self, node, parent): + """visit a Subscript node by returning a fresh instance of it""" + context = self._get_context(node) + newnode = nodes.Subscript( + ctx=context, lineno=node.lineno, col_offset=node.col_offset, parent=parent + ) + newnode.postinit( + self.visit(node.value, newnode), self.visit(node.slice, newnode) + ) + return newnode + + def visit_tryexcept(self, node, parent): + """visit a TryExcept node by returning a fresh instance of it""" + newnode = nodes.TryExcept(node.lineno, node.col_offset, parent) + newnode.postinit( + [self.visit(child, newnode) for child in node.body], + [self.visit(child, newnode) for child in node.handlers], + [self.visit(child, newnode) for child in node.orelse], + ) + return newnode + + def visit_tryfinally(self, node, parent): + """visit a TryFinally node by returning a fresh instance of it""" + newnode = nodes.TryFinally(node.lineno, node.col_offset, parent) + newnode.postinit( + [self.visit(child, newnode) for child in node.body], + [self.visit(n, newnode) for n in node.finalbody], + ) + return newnode + + def visit_tuple(self, node, parent): + """visit a Tuple node by returning a fresh instance of it""" + context = self._get_context(node) + newnode = nodes.Tuple( + ctx=context, lineno=node.lineno, col_offset=node.col_offset, parent=parent + ) + newnode.postinit([self.visit(child, newnode) for child in node.elts]) + return newnode + + def visit_unaryop(self, node, parent): + """visit a UnaryOp node by returning a fresh instance of it""" + newnode = nodes.UnaryOp( + self._unary_op_classes[node.op.__class__], + node.lineno, + node.col_offset, + parent, + ) + newnode.postinit(self.visit(node.operand, newnode)) + return newnode + + def visit_while(self, node, parent): + """visit a While node by returning a fresh instance of it""" + newnode = nodes.While(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.test, newnode), + [self.visit(child, newnode) for child in node.body], + [self.visit(child, newnode) for child in node.orelse], + ) + return newnode + + def visit_with(self, node, parent): + newnode = nodes.With(node.lineno, node.col_offset, parent) + expr = self.visit(node.context_expr, newnode) + if node.optional_vars is not None: + optional_vars = self.visit(node.optional_vars, newnode) + else: + optional_vars = None + + type_annotation = self.check_type_comment(node, parent=newnode) + newnode.postinit( + items=[(expr, optional_vars)], + body=[self.visit(child, newnode) for child in node.body], + type_annotation=type_annotation, + ) + return newnode + + def visit_yield(self, node, parent): + """visit a Yield node by returning a fresh instance of it""" + newnode = nodes.Yield(node.lineno, node.col_offset, parent) + if node.value is not None: + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + +class TreeRebuilder3(TreeRebuilder): + """extend and overwrite TreeRebuilder for python3k""" + + def visit_arg(self, node, parent): + """visit an arg node by returning a fresh AssName instance""" + return self.visit_assignname(node, parent, node.arg) + + # Not used in Python 3.8+. + def visit_nameconstant(self, node, parent): + # in Python 3.4 we have NameConstant for True / False / None + return nodes.Const( + node.value, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + + def visit_excepthandler(self, node, parent): + """visit an ExceptHandler node by returning a fresh instance of it""" + newnode = nodes.ExceptHandler(node.lineno, node.col_offset, parent) + if node.name: + name = self.visit_assignname(node, newnode, node.name) + else: + name = None + newnode.postinit( + _visit_or_none(node, "type", self, newnode), + name, + [self.visit(child, newnode) for child in node.body], + ) + return newnode + + def visit_nonlocal(self, node, parent): + """visit a Nonlocal node and return a new instance of it""" + return nodes.Nonlocal( + node.names, + getattr(node, "lineno", None), + getattr(node, "col_offset", None), + parent, + ) + + def visit_raise(self, node, parent): + """visit a Raise node by returning a fresh instance of it""" + newnode = nodes.Raise(node.lineno, node.col_offset, parent) + # no traceback; anyway it is not used in Pylint + newnode.postinit( + _visit_or_none(node, "exc", self, newnode), + _visit_or_none(node, "cause", self, newnode), + ) + return newnode + + def visit_starred(self, node, parent): + """visit a Starred node and return a new instance of it""" + context = self._get_context(node) + newnode = nodes.Starred( + ctx=context, lineno=node.lineno, col_offset=node.col_offset, parent=parent + ) + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + def visit_try(self, node, parent): + # python 3.3 introduce a new Try node replacing + # TryFinally/TryExcept nodes + if node.finalbody: + newnode = nodes.TryFinally(node.lineno, node.col_offset, parent) + if node.handlers: + body = [self.visit_tryexcept(node, newnode)] + else: + body = [self.visit(child, newnode) for child in node.body] + newnode.postinit(body, [self.visit(n, newnode) for n in node.finalbody]) + return newnode + if node.handlers: + return self.visit_tryexcept(node, parent) + return None + + def visit_annassign(self, node, parent): + """visit an AnnAssign node by returning a fresh instance of it""" + newnode = nodes.AnnAssign(node.lineno, node.col_offset, parent) + annotation = _visit_or_none(node, "annotation", self, newnode) + newnode.postinit( + target=self.visit(node.target, newnode), + annotation=annotation, + simple=node.simple, + value=_visit_or_none(node, "value", self, newnode), + ) + return newnode + + def _visit_with(self, cls, node, parent): + if "items" not in node._fields: + # python < 3.3 + return super(TreeRebuilder3, self).visit_with(node, parent) + + newnode = cls(node.lineno, node.col_offset, parent) + + def visit_child(child): + expr = self.visit(child.context_expr, newnode) + var = _visit_or_none(child, "optional_vars", self, newnode) + return expr, var + + type_annotation = self.check_type_comment(node, parent=newnode) + newnode.postinit( + items=[visit_child(child) for child in node.items], + body=[self.visit(child, newnode) for child in node.body], + type_annotation=type_annotation, + ) + return newnode + + def visit_with(self, node, parent): + return self._visit_with(nodes.With, node, parent) + + def visit_yieldfrom(self, node, parent): + newnode = nodes.YieldFrom(node.lineno, node.col_offset, parent) + if node.value is not None: + newnode.postinit(self.visit(node.value, newnode)) + return newnode + + def visit_classdef(self, node, parent, newstyle=True): + return super(TreeRebuilder3, self).visit_classdef( + node, parent, newstyle=newstyle + ) + + # Async structs added in Python 3.5 + def visit_asyncfunctiondef(self, node, parent): + return self._visit_functiondef(nodes.AsyncFunctionDef, node, parent) + + def visit_asyncfor(self, node, parent): + return self._visit_for(nodes.AsyncFor, node, parent) + + def visit_await(self, node, parent): + newnode = nodes.Await(node.lineno, node.col_offset, parent) + newnode.postinit(value=self.visit(node.value, newnode)) + return newnode + + def visit_asyncwith(self, node, parent): + return self._visit_with(nodes.AsyncWith, node, parent) + + def visit_joinedstr(self, node, parent): + newnode = nodes.JoinedStr(node.lineno, node.col_offset, parent) + newnode.postinit([self.visit(child, newnode) for child in node.values]) + return newnode + + def visit_formattedvalue(self, node, parent): + newnode = nodes.FormattedValue(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.value, newnode), + node.conversion, + _visit_or_none(node, "format_spec", self, newnode), + ) + return newnode + + def visit_namedexpr(self, node, parent): + newnode = nodes.NamedExpr(node.lineno, node.col_offset, parent) + newnode.postinit( + self.visit(node.target, newnode), self.visit(node.value, newnode) + ) + return newnode + + +TreeRebuilder = TreeRebuilder3 diff --git a/venv/Lib/site-packages/astroid/scoped_nodes.py b/venv/Lib/site-packages/astroid/scoped_nodes.py new file mode 100644 index 0000000..d02b653 --- /dev/null +++ b/venv/Lib/site-packages/astroid/scoped_nodes.py @@ -0,0 +1,2836 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2006-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2010 Daniel Harding +# Copyright (c) 2011, 2013-2015 Google, Inc. +# Copyright (c) 2013-2018 Claudiu Popa +# Copyright (c) 2013 Phil Schaf +# Copyright (c) 2014 Eevee (Alex Munroe) +# Copyright (c) 2015-2016 Florian Bruhin +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2015 Rene Zhang +# Copyright (c) 2015 Philip Lorenz +# Copyright (c) 2016-2017 Derek Gustafson +# Copyright (c) 2017-2018 Bryce Guinta +# Copyright (c) 2017-2018 Ashley Whetter +# Copyright (c) 2017 Łukasz Rogalski +# Copyright (c) 2017 David Euresti +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 Anthony Sottile +# Copyright (c) 2018 HoverHell + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +""" +This module contains the classes for "scoped" node, i.e. which are opening a +new local scope in the language definition : Module, ClassDef, FunctionDef (and +Lambda, GeneratorExp, DictComp and SetComp to some extent). +""" + +import builtins +import sys +import io +import itertools +from typing import Optional, List + +from astroid import bases +from astroid import context as contextmod +from astroid import exceptions +from astroid import decorators as decorators_mod +from astroid.interpreter import objectmodel +from astroid.interpreter import dunder_lookup +from astroid import manager +from astroid import mixins +from astroid import node_classes +from astroid import util + + +BUILTINS = builtins.__name__ +ITER_METHODS = ("__iter__", "__getitem__") +EXCEPTION_BASE_CLASSES = frozenset({"Exception", "BaseException"}) +objects = util.lazy_import("objects") + + +def _c3_merge(sequences, cls, context): + """Merges MROs in *sequences* to a single MRO using the C3 algorithm. + + Adapted from http://www.python.org/download/releases/2.3/mro/. + + """ + result = [] + while True: + sequences = [s for s in sequences if s] # purge empty sequences + if not sequences: + return result + for s1 in sequences: # find merge candidates among seq heads + candidate = s1[0] + for s2 in sequences: + if candidate in s2[1:]: + candidate = None + break # reject the current head, it appears later + else: + break + if not candidate: + # Show all the remaining bases, which were considered as + # candidates for the next mro sequence. + raise exceptions.InconsistentMroError( + message="Cannot create a consistent method resolution order " + "for MROs {mros} of class {cls!r}.", + mros=sequences, + cls=cls, + context=context, + ) + + result.append(candidate) + # remove the chosen candidate + for seq in sequences: + if seq[0] == candidate: + del seq[0] + return None + + +def clean_duplicates_mro(sequences, cls, context): + for sequence in sequences: + names = [ + (node.lineno, node.qname()) if node.name else None for node in sequence + ] + last_index = dict(map(reversed, enumerate(names))) + if names and names[0] is not None and last_index[names[0]] != 0: + raise exceptions.DuplicateBasesError( + message="Duplicates found in MROs {mros} for {cls!r}.", + mros=sequences, + cls=cls, + context=context, + ) + yield [ + node + for i, (node, name) in enumerate(zip(sequence, names)) + if name is None or last_index[name] == i + ] + + +def function_to_method(n, klass): + if isinstance(n, FunctionDef): + if n.type == "classmethod": + return bases.BoundMethod(n, klass) + if n.type != "staticmethod": + return bases.UnboundMethod(n) + return n + + +MANAGER = manager.AstroidManager() + + +def builtin_lookup(name): + """lookup a name into the builtin module + return the list of matching statements and the astroid for the builtin + module + """ + builtin_astroid = MANAGER.ast_from_module(builtins) + if name == "__dict__": + return builtin_astroid, () + try: + stmts = builtin_astroid.locals[name] + except KeyError: + stmts = () + return builtin_astroid, stmts + + +# TODO move this Mixin to mixins.py; problem: 'FunctionDef' in _scope_lookup +class LocalsDictNodeNG(node_classes.LookupMixIn, node_classes.NodeNG): + """ this class provides locals handling common to Module, FunctionDef + and ClassDef nodes, including a dict like interface for direct access + to locals information + """ + + # attributes below are set by the builder module or by raw factories + + locals = {} + """A map of the name of a local variable to the node defining the local. + + :type: dict(str, NodeNG) + """ + + def qname(self): + """Get the 'qualified' name of the node. + + For example: module.name, module.class.name ... + + :returns: The qualified name. + :rtype: str + """ + # pylint: disable=no-member; github.com/pycqa/astroid/issues/278 + if self.parent is None: + return self.name + return "%s.%s" % (self.parent.frame().qname(), self.name) + + def frame(self): + """The first parent frame node. + + A frame node is a :class:`Module`, :class:`FunctionDef`, + or :class:`ClassDef`. + + :returns: The first parent frame node. + :rtype: Module or FunctionDef or ClassDef + """ + return self + + def scope(self): + """The first parent node defining a new scope. + + :returns: The first parent scope node. + :rtype: Module or FunctionDef or ClassDef or Lambda or GenExpr + """ + return self + + def _scope_lookup(self, node, name, offset=0): + """XXX method for interfacing the scope lookup""" + try: + stmts = node._filter_stmts(self.locals[name], self, offset) + except KeyError: + stmts = () + if stmts: + return self, stmts + if self.parent: # i.e. not Module + # nested scope: if parent scope is a function, that's fine + # else jump to the module + pscope = self.parent.scope() + if not pscope.is_function: + pscope = pscope.root() + return pscope.scope_lookup(node, name) + return builtin_lookup(name) # Module + + def set_local(self, name, stmt): + """Define that the given name is declared in the given statement node. + + .. seealso:: :meth:`scope` + + :param name: The name that is being defined. + :type name: str + + :param stmt: The statement that defines the given name. + :type stmt: NodeNG + """ + # assert not stmt in self.locals.get(name, ()), (self, stmt) + self.locals.setdefault(name, []).append(stmt) + + __setitem__ = set_local + + def _append_node(self, child): + """append a child, linking it in the tree""" + # pylint: disable=no-member; depending by the class + # which uses the current class as a mixin or base class. + # It's rewritten in 2.0, so it makes no sense for now + # to spend development time on it. + self.body.append(child) + child.parent = self + + def add_local_node(self, child_node, name=None): + """Append a child that should alter the locals of this scope node. + + :param child_node: The child node that will alter locals. + :type child_node: NodeNG + + :param name: The name of the local that will be altered by + the given child node. + :type name: str or None + """ + if name != "__class__": + # add __class__ node as a child will cause infinite recursion later! + self._append_node(child_node) + self.set_local(name or child_node.name, child_node) + + def __getitem__(self, item): + """The first node the defines the given local. + + :param item: The name of the locally defined object. + :type item: str + + :raises KeyError: If the name is not defined. + """ + return self.locals[item][0] + + def __iter__(self): + """Iterate over the names of locals defined in this scoped node. + + :returns: The names of the defined locals. + :rtype: iterable(str) + """ + return iter(self.keys()) + + def keys(self): + """The names of locals defined in this scoped node. + + :returns: The names of the defined locals. + :rtype: list(str) + """ + return list(self.locals.keys()) + + def values(self): + """The nodes that define the locals in this scoped node. + + :returns: The nodes that define locals. + :rtype: list(NodeNG) + """ + return [self[key] for key in self.keys()] + + def items(self): + """Get the names of the locals and the node that defines the local. + + :returns: The names of locals and their associated node. + :rtype: list(tuple(str, NodeNG)) + """ + return list(zip(self.keys(), self.values())) + + def __contains__(self, name): + """Check if a local is defined in this scope. + + :param name: The name of the local to check for. + :type name: str + + :returns: True if this node has a local of the given name, + False otherwise. + :rtype: bool + """ + return name in self.locals + + +class Module(LocalsDictNodeNG): + """Class representing an :class:`ast.Module` node. + + >>> node = astroid.extract_node('import astroid') + >>> node + + >>> node.parent + + """ + + _astroid_fields = ("body",) + + fromlineno = 0 + """The first line that this node appears on in the source code. + + :type: int or None + """ + lineno = 0 + """The line that this node appears on in the source code. + + :type: int or None + """ + + # attributes below are set by the builder module or by raw factories + + file = None + """The path to the file that this ast has been extracted from. + + This will be ``None`` when the representation has been built from a + built-in module. + + :type: str or None + """ + file_bytes = None + """The string/bytes that this ast was built from. + + :type: str or bytes or None + """ + file_encoding = None + """The encoding of the source file. + + This is used to get unicode out of a source file. + Python 2 only. + + :type: str or None + """ + name = None + """The name of the module. + + :type: str or None + """ + pure_python = None + """Whether the ast was built from source. + + :type: bool or None + """ + package = None + """Whether the node represents a package or a module. + + :type: bool or None + """ + globals = None + """A map of the name of a global variable to the node defining the global. + + :type: dict(str, NodeNG) + """ + + # Future imports + future_imports = None + """The imports from ``__future__``. + + :type: set(str) or None + """ + special_attributes = objectmodel.ModuleModel() + """The names of special attributes that this module has. + + :type: objectmodel.ModuleModel + """ + + # names of module attributes available through the global scope + scope_attrs = {"__name__", "__doc__", "__file__", "__path__", "__package__"} + """The names of module attributes available through the global scope. + + :type: str(str) + """ + + _other_fields = ( + "name", + "doc", + "file", + "path", + "package", + "pure_python", + "future_imports", + ) + _other_other_fields = ("locals", "globals") + + def __init__( + self, + name, + doc, + file=None, + path: Optional[List[str]] = None, + package=None, + parent=None, + pure_python=True, + ): + """ + :param name: The name of the module. + :type name: str + + :param doc: The module docstring. + :type doc: str + + :param file: The path to the file that this ast has been extracted from. + :type file: str or None + + :param path: + :type path: Optional[List[str]] + + :param package: Whether the node represents a package or a module. + :type package: bool or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + + :param pure_python: Whether the ast was built from source. + :type pure_python: bool or None + """ + self.name = name + self.doc = doc + self.file = file + self.path = path + self.package = package + self.parent = parent + self.pure_python = pure_python + self.locals = self.globals = {} + """A map of the name of a local variable to the node defining the local. + + :type: dict(str, NodeNG) + """ + self.body = [] + """The contents of the module. + + :type: list(NodeNG) or None + """ + self.future_imports = set() + + # pylint: enable=redefined-builtin + + def postinit(self, body=None): + """Do some setup after initialisation. + + :param body: The contents of the module. + :type body: list(NodeNG) or None + """ + self.body = body + + def _get_stream(self): + if self.file_bytes is not None: + return io.BytesIO(self.file_bytes) + if self.file is not None: + stream = open(self.file, "rb") + return stream + return None + + def stream(self): + """Get a stream to the underlying file or bytes. + + :type: file or io.BytesIO or None + """ + return self._get_stream() + + def block_range(self, lineno): + """Get a range from where this node starts to where this node ends. + + :param lineno: Unused. + :type lineno: int + + :returns: The range of line numbers that this node belongs to. + :rtype: tuple(int, int) + """ + return self.fromlineno, self.tolineno + + def scope_lookup(self, node, name, offset=0): + """Lookup where the given variable is assigned. + + :param node: The node to look for assignments up to. + Any assignments after the given node are ignored. + :type node: NodeNG + + :param name: The name of the variable to find assignments for. + :type name: str + + :param offset: The line offset to filter statements up to. + :type offset: int + + :returns: This scope node and the list of assignments associated to the + given name according to the scope where it has been found (locals, + globals or builtin). + :rtype: tuple(str, list(NodeNG)) + """ + if name in self.scope_attrs and name not in self.locals: + try: + return self, self.getattr(name) + except exceptions.AttributeInferenceError: + return self, () + return self._scope_lookup(node, name, offset) + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + return "%s.module" % BUILTINS + + def display_type(self): + """A human readable type of this node. + + :returns: The type of this node. + :rtype: str + """ + return "Module" + + def getattr(self, name, context=None, ignore_locals=False): + result = [] + name_in_locals = name in self.locals + + if name in self.special_attributes and not ignore_locals and not name_in_locals: + result = [self.special_attributes.lookup(name)] + elif not ignore_locals and name_in_locals: + result = self.locals[name] + elif self.package: + try: + result = [self.import_module(name, relative_only=True)] + except (exceptions.AstroidBuildingError, SyntaxError) as exc: + raise exceptions.AttributeInferenceError( + target=self, attribute=name, context=context + ) from exc + result = [n for n in result if not isinstance(n, node_classes.DelName)] + if result: + return result + raise exceptions.AttributeInferenceError( + target=self, attribute=name, context=context + ) + + def igetattr(self, name, context=None): + """Infer the possible values of the given variable. + + :param name: The name of the variable to infer. + :type name: str + + :returns: The inferred possible values. + :rtype: iterable(NodeNG) or None + """ + # set lookup name since this is necessary to infer on import nodes for + # instance + context = contextmod.copy_context(context) + context.lookupname = name + try: + return bases._infer_stmts(self.getattr(name, context), context, frame=self) + except exceptions.AttributeInferenceError as error: + raise exceptions.InferenceError( + error.message, target=self, attribute=name, context=context + ) from error + + def fully_defined(self): + """Check if this module has been build from a .py file. + + If so, the module contains a complete representation, + including the code. + + :returns: True if the module has been built from a .py file. + :rtype: bool + """ + return self.file is not None and self.file.endswith(".py") + + def statement(self): + """The first parent node, including self, marked as statement node. + + :returns: The first parent statement. + :rtype: NodeNG + """ + return self + + def previous_sibling(self): + """The previous sibling statement. + + :returns: The previous sibling statement node. + :rtype: NodeNG or None + """ + + def next_sibling(self): + """The next sibling statement node. + + :returns: The next sibling statement node. + :rtype: NodeNG or None + """ + + _absolute_import_activated = True + + def absolute_import_activated(self): + """Whether :pep:`328` absolute import behaviour has been enabled. + + :returns: True if :pep:`328` has been enabled, False otherwise. + :rtype: bool + """ + return self._absolute_import_activated + + def import_module(self, modname, relative_only=False, level=None): + """Get the ast for a given module as if imported from this module. + + :param modname: The name of the module to "import". + :type modname: str + + :param relative_only: Whether to only consider relative imports. + :type relative_only: bool + + :param level: The level of relative import. + :type level: int or None + + :returns: The imported module ast. + :rtype: NodeNG + """ + if relative_only and level is None: + level = 0 + absmodname = self.relative_to_absolute_name(modname, level) + + try: + return MANAGER.ast_from_module_name(absmodname) + except exceptions.AstroidBuildingError: + # we only want to import a sub module or package of this module, + # skip here + if relative_only: + raise + return MANAGER.ast_from_module_name(modname) + + def relative_to_absolute_name(self, modname, level): + """Get the absolute module name for a relative import. + + The relative import can be implicit or explicit. + + :param modname: The module name to convert. + :type modname: str + + :param level: The level of relative import. + :type level: int + + :returns: The absolute module name. + :rtype: str + + :raises TooManyLevelsError: When the relative import refers to a + module too far above this one. + """ + # XXX this returns non sens when called on an absolute import + # like 'pylint.checkers.astroid.utils' + # XXX doesn't return absolute name if self.name isn't absolute name + if self.absolute_import_activated() and level is None: + return modname + if level: + if self.package: + level = level - 1 + if level and self.name.count(".") < level: + raise exceptions.TooManyLevelsError(level=level, name=self.name) + + package_name = self.name.rsplit(".", level)[0] + elif self.package: + package_name = self.name + else: + package_name = self.name.rsplit(".", 1)[0] + + if package_name: + if not modname: + return package_name + return "%s.%s" % (package_name, modname) + return modname + + def wildcard_import_names(self): + """The list of imported names when this module is 'wildcard imported'. + + It doesn't include the '__builtins__' name which is added by the + current CPython implementation of wildcard imports. + + :returns: The list of imported names. + :rtype: list(str) + """ + # We separate the different steps of lookup in try/excepts + # to avoid catching too many Exceptions + default = [name for name in self.keys() if not name.startswith("_")] + try: + all_values = self["__all__"] + except KeyError: + return default + + try: + explicit = next(all_values.assigned_stmts()) + except exceptions.InferenceError: + return default + except AttributeError: + # not an assignment node + # XXX infer? + return default + + # Try our best to detect the exported name. + inferred = [] + try: + explicit = next(explicit.infer()) + except exceptions.InferenceError: + return default + if not isinstance(explicit, (node_classes.Tuple, node_classes.List)): + return default + + str_const = lambda node: ( + isinstance(node, node_classes.Const) and isinstance(node.value, str) + ) + for node in explicit.elts: + if str_const(node): + inferred.append(node.value) + else: + try: + inferred_node = next(node.infer()) + except exceptions.InferenceError: + continue + if str_const(inferred_node): + inferred.append(inferred_node.value) + return inferred + + def public_names(self): + """The list of the names that are publicly available in this module. + + :returns: The list of publc names. + :rtype: list(str) + """ + return [name for name in self.keys() if not name.startswith("_")] + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For a :class:`Module` this is always ``True``. + :rtype: bool + """ + return True + + def get_children(self): + yield from self.body + + +class ComprehensionScope(LocalsDictNodeNG): + """Scoping for different types of comprehensions.""" + + def frame(self): + """The first parent frame node. + + A frame node is a :class:`Module`, :class:`FunctionDef`, + or :class:`ClassDef`. + + :returns: The first parent frame node. + :rtype: Module or FunctionDef or ClassDef + """ + return self.parent.frame() + + scope_lookup = LocalsDictNodeNG._scope_lookup + + +class GeneratorExp(ComprehensionScope): + """Class representing an :class:`ast.GeneratorExp` node. + + >>> node = astroid.extract_node('(thing for thing in things if thing)') + >>> node + + """ + + _astroid_fields = ("elt", "generators") + _other_other_fields = ("locals",) + elt = None + """The element that forms the output of the expression. + + :type: NodeNG or None + """ + generators = None + """The generators that are looped through. + + :type: list(Comprehension) or None + """ + + def __init__(self, lineno=None, col_offset=None, parent=None): + """ + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.locals = {} + """A map of the name of a local variable to the node defining the local. + + :type: dict(str, NodeNG) + """ + + super(GeneratorExp, self).__init__(lineno, col_offset, parent) + + def postinit(self, elt=None, generators=None): + """Do some setup after initialisation. + + :param elt: The element that forms the output of the expression. + :type elt: NodeNG or None + + :param generators: The generators that are looped through. + :type generators: list(Comprehension) or None + """ + self.elt = elt + if generators is None: + self.generators = [] + else: + self.generators = generators + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For a :class:`GeneratorExp` this is always ``True``. + :rtype: bool + """ + return True + + def get_children(self): + yield self.elt + + yield from self.generators + + +class DictComp(ComprehensionScope): + """Class representing an :class:`ast.DictComp` node. + + >>> node = astroid.extract_node('{k:v for k, v in things if k > v}') + >>> node + + """ + + _astroid_fields = ("key", "value", "generators") + _other_other_fields = ("locals",) + key = None + """What produces the keys. + + :type: NodeNG or None + """ + value = None + """What produces the values. + + :type: NodeNG or None + """ + generators = None + """The generators that are looped through. + + :type: list(Comprehension) or None + """ + + def __init__(self, lineno=None, col_offset=None, parent=None): + """ + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.locals = {} + """A map of the name of a local variable to the node defining the local. + + :type: dict(str, NodeNG) + """ + + super(DictComp, self).__init__(lineno, col_offset, parent) + + def postinit(self, key=None, value=None, generators=None): + """Do some setup after initialisation. + + :param key: What produces the keys. + :type key: NodeNG or None + + :param value: What produces the values. + :type value: NodeNG or None + + :param generators: The generators that are looped through. + :type generators: list(Comprehension) or None + """ + self.key = key + self.value = value + if generators is None: + self.generators = [] + else: + self.generators = generators + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For a :class:`DictComp` this is always :class:`Uninferable`. + :rtype: Uninferable + """ + return util.Uninferable + + def get_children(self): + yield self.key + yield self.value + + yield from self.generators + + +class SetComp(ComprehensionScope): + """Class representing an :class:`ast.SetComp` node. + + >>> node = astroid.extract_node('{thing for thing in things if thing}') + >>> node + + """ + + _astroid_fields = ("elt", "generators") + _other_other_fields = ("locals",) + elt = None + """The element that forms the output of the expression. + + :type: NodeNG or None + """ + generators = None + """The generators that are looped through. + + :type: list(Comprehension) or None + """ + + def __init__(self, lineno=None, col_offset=None, parent=None): + """ + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.locals = {} + """A map of the name of a local variable to the node defining the local. + + :type: dict(str, NodeNG) + """ + + super(SetComp, self).__init__(lineno, col_offset, parent) + + def postinit(self, elt=None, generators=None): + """Do some setup after initialisation. + + :param elt: The element that forms the output of the expression. + :type elt: NodeNG or None + + :param generators: The generators that are looped through. + :type generators: list(Comprehension) or None + """ + self.elt = elt + if generators is None: + self.generators = [] + else: + self.generators = generators + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For a :class:`SetComp` this is always :class:`Uninferable`. + :rtype: Uninferable + """ + return util.Uninferable + + def get_children(self): + yield self.elt + + yield from self.generators + + +class _ListComp(node_classes.NodeNG): + """Class representing an :class:`ast.ListComp` node. + + >>> node = astroid.extract_node('[thing for thing in things if thing]') + >>> node + + """ + + _astroid_fields = ("elt", "generators") + elt = None + """The element that forms the output of the expression. + + :type: NodeNG or None + """ + generators = None + """The generators that are looped through. + + :type: list(Comprehension) or None + """ + + def postinit(self, elt=None, generators=None): + """Do some setup after initialisation. + + :param elt: The element that forms the output of the expression. + :type elt: NodeNG or None + + :param generators: The generators that are looped through. + :type generators: list(Comprehension) or None + """ + self.elt = elt + self.generators = generators + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For a :class:`ListComp` this is always :class:`Uninferable`. + :rtype: Uninferable + """ + return util.Uninferable + + def get_children(self): + yield self.elt + + yield from self.generators + + +class ListComp(_ListComp, ComprehensionScope): + """Class representing an :class:`ast.ListComp` node. + + >>> node = astroid.extract_node('[thing for thing in things if thing]') + >>> node + + """ + + _other_other_fields = ("locals",) + + def __init__(self, lineno=None, col_offset=None, parent=None): + self.locals = {} + """A map of the name of a local variable to the node defining it. + + :type: dict(str, NodeNG) + """ + + super(ListComp, self).__init__(lineno, col_offset, parent) + + +def _infer_decorator_callchain(node): + """Detect decorator call chaining and see if the end result is a + static or a classmethod. + """ + if not isinstance(node, FunctionDef): + return None + if not node.parent: + return None + try: + result = next(node.infer_call_result(node.parent)) + except exceptions.InferenceError: + return None + if isinstance(result, bases.Instance): + result = result._proxied + if isinstance(result, ClassDef): + if result.is_subtype_of("%s.classmethod" % BUILTINS): + return "classmethod" + if result.is_subtype_of("%s.staticmethod" % BUILTINS): + return "staticmethod" + return None + + +class Lambda(mixins.FilterStmtsMixin, LocalsDictNodeNG): + """Class representing an :class:`ast.Lambda` node. + + >>> node = astroid.extract_node('lambda arg: arg + 1') + >>> node + l.1 at 0x7f23b2e41518> + """ + + _astroid_fields = ("args", "body") + _other_other_fields = ("locals",) + name = "" + is_lambda = True + + def implicit_parameters(self): + return 0 + + # function's type, 'function' | 'method' | 'staticmethod' | 'classmethod' + @property + def type(self): + """Whether this is a method or function. + + :returns: 'method' if this is a method, 'function' otherwise. + :rtype: str + """ + # pylint: disable=no-member + if self.args.args and self.args.args[0].name == "self": + if isinstance(self.parent.scope(), ClassDef): + return "method" + return "function" + + def __init__(self, lineno=None, col_offset=None, parent=None): + """ + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.locals = {} + """A map of the name of a local variable to the node defining it. + + :type: dict(str, NodeNG) + """ + + self.args = [] + """The arguments that the function takes. + + :type: Arguments or list + """ + + self.body = [] + """The contents of the function body. + + :type: list(NodeNG) + """ + + super(Lambda, self).__init__(lineno, col_offset, parent) + + def postinit(self, args, body): + """Do some setup after initialisation. + + :param args: The arguments that the function takes. + :type args: Arguments + + :param body: The contents of the function body. + :type body: list(NodeNG) + """ + self.args = args + self.body = body + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + if "method" in self.type: + return "%s.instancemethod" % BUILTINS + return "%s.function" % BUILTINS + + def display_type(self): + """A human readable type of this node. + + :returns: The type of this node. + :rtype: str + """ + if "method" in self.type: + return "Method" + return "Function" + + def callable(self): + """Whether this node defines something that is callable. + + :returns: True if this defines something that is callable, + False otherwise. + For a :class:`Lambda` this is always ``True``. + :rtype: bool + """ + return True + + def argnames(self): + """Get the names of each of the arguments. + + :returns: The names of the arguments. + :rtype: list(str) + """ + # pylint: disable=no-member; github.com/pycqa/astroid/issues/291 + # args is in fact redefined later on by postinit. Can't be changed + # to None due to a strong interaction between Lambda and FunctionDef. + + if self.args.args: # maybe None with builtin functions + names = _rec_get_names(self.args.args) + else: + names = [] + if self.args.vararg: + names.append(self.args.vararg) + if self.args.kwarg: + names.append(self.args.kwarg) + return names + + def infer_call_result(self, caller, context=None): + """Infer what the function returns when called. + + :param caller: Unused + :type caller: object + """ + # pylint: disable=no-member; github.com/pycqa/astroid/issues/291 + # args is in fact redefined later on by postinit. Can't be changed + # to None due to a strong interaction between Lambda and FunctionDef. + return self.body.infer(context) + + def scope_lookup(self, node, name, offset=0): + """Lookup where the given names is assigned. + + :param node: The node to look for assignments up to. + Any assignments after the given node are ignored. + :type node: NodeNG + + :param name: The name to find assignments for. + :type name: str + + :param offset: The line offset to filter statements up to. + :type offset: int + + :returns: This scope node and the list of assignments associated to the + given name according to the scope where it has been found (locals, + globals or builtin). + :rtype: tuple(str, list(NodeNG)) + """ + # pylint: disable=no-member; github.com/pycqa/astroid/issues/291 + # args is in fact redefined later on by postinit. Can't be changed + # to None due to a strong interaction between Lambda and FunctionDef. + + if node in self.args.defaults or node in self.args.kw_defaults: + frame = self.parent.frame() + # line offset to avoid that def func(f=func) resolve the default + # value to the defined function + offset = -1 + else: + # check this is not used in function decorators + frame = self + return frame._scope_lookup(node, name, offset) + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For a :class:`Lambda` this is always ``True``. + :rtype: bool + """ + return True + + def get_children(self): + yield self.args + yield self.body + + +class FunctionDef(mixins.MultiLineBlockMixin, node_classes.Statement, Lambda): + """Class representing an :class:`ast.FunctionDef`. + + >>> node = astroid.extract_node(''' + ... def my_func(arg): + ... return arg + 1 + ... ''') + >>> node + + """ + + _astroid_fields = ("decorators", "args", "returns", "body") + _multi_line_block_fields = ("body",) + returns = None + decorators = None + """The decorators that are applied to this method or function. + + :type: Decorators or None + """ + special_attributes = objectmodel.FunctionModel() + """The names of special attributes that this function has. + + :type: objectmodel.FunctionModel + """ + is_function = True + """Whether this node indicates a function. + + For a :class:`FunctionDef` this is always ``True``. + + :type: bool + """ + type_annotation = None + """If present, this will contain the type annotation passed by a type comment + + :type: NodeNG or None + """ + type_comment_args = None + """ + If present, this will contain the type annotation for arguments + passed by a type comment + """ + type_comment_returns = None + """If present, this will contain the return type annotation, passed by a type comment""" + # attributes below are set by the builder module or by raw factories + _other_fields = ("name", "doc") + _other_other_fields = ( + "locals", + "_type", + "type_comment_returns", + "type_comment_args", + ) + _type = None + + def __init__(self, name=None, doc=None, lineno=None, col_offset=None, parent=None): + """ + :param name: The name of the function. + :type name: str or None + + :param doc: The function's docstring. + :type doc: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.name = name + """The name of the function. + + :type name: str or None + """ + + self.doc = doc + """The function's docstring. + + :type doc: str or None + """ + + self.instance_attrs = {} + super(FunctionDef, self).__init__(lineno, col_offset, parent) + if parent: + frame = parent.frame() + frame.set_local(name, self) + + # pylint: disable=arguments-differ; different than Lambdas + def postinit( + self, + args, + body, + decorators=None, + returns=None, + type_comment_returns=None, + type_comment_args=None, + ): + """Do some setup after initialisation. + + :param args: The arguments that the function takes. + :type args: Arguments or list + + :param body: The contents of the function body. + :type body: list(NodeNG) + + :param decorators: The decorators that are applied to this + method or function. + :type decorators: Decorators or None + :params type_comment_returns: + The return type annotation passed via a type comment. + :params type_comment_args: + The args type annotation passed via a type comment. + """ + self.args = args + self.body = body + self.decorators = decorators + self.returns = returns + self.type_comment_returns = type_comment_returns + self.type_comment_args = type_comment_args + + @decorators_mod.cachedproperty + def extra_decorators(self): + """The extra decorators that this function can have. + + Additional decorators are considered when they are used as + assignments, as in ``method = staticmethod(method)``. + The property will return all the callables that are used for + decoration. + + :type: list(NodeNG) + """ + frame = self.parent.frame() + if not isinstance(frame, ClassDef): + return [] + + decorators = [] + for assign in frame._get_assign_nodes(): + if isinstance(assign.value, node_classes.Call) and isinstance( + assign.value.func, node_classes.Name + ): + for assign_node in assign.targets: + if not isinstance(assign_node, node_classes.AssignName): + # Support only `name = callable(name)` + continue + + if assign_node.name != self.name: + # Interested only in the assignment nodes that + # decorates the current method. + continue + try: + meth = frame[self.name] + except KeyError: + continue + else: + # Must be a function and in the same frame as the + # original method. + if ( + isinstance(meth, FunctionDef) + and assign_node.frame() == frame + ): + decorators.append(assign.value) + return decorators + + @decorators_mod.cachedproperty + def type(self): # pylint: disable=invalid-overridden-method + """The function type for this node. + + Possible values are: method, function, staticmethod, classmethod. + + :type: str + """ + builtin_descriptors = {"classmethod", "staticmethod"} + + for decorator in self.extra_decorators: + if decorator.func.name in builtin_descriptors: + return decorator.func.name + + frame = self.parent.frame() + type_name = "function" + if isinstance(frame, ClassDef): + if self.name == "__new__": + return "classmethod" + if sys.version_info >= (3, 6) and self.name == "__init_subclass__": + return "classmethod" + + type_name = "method" + + if not self.decorators: + return type_name + + for node in self.decorators.nodes: + if isinstance(node, node_classes.Name): + if node.name in builtin_descriptors: + return node.name + + if isinstance(node, node_classes.Call): + # Handle the following case: + # @some_decorator(arg1, arg2) + # def func(...) + # + try: + current = next(node.func.infer()) + except exceptions.InferenceError: + continue + _type = _infer_decorator_callchain(current) + if _type is not None: + return _type + + try: + for inferred in node.infer(): + # Check to see if this returns a static or a class method. + _type = _infer_decorator_callchain(inferred) + if _type is not None: + return _type + + if not isinstance(inferred, ClassDef): + continue + for ancestor in inferred.ancestors(): + if not isinstance(ancestor, ClassDef): + continue + if ancestor.is_subtype_of("%s.classmethod" % BUILTINS): + return "classmethod" + if ancestor.is_subtype_of("%s.staticmethod" % BUILTINS): + return "staticmethod" + except exceptions.InferenceError: + pass + return type_name + + @decorators_mod.cachedproperty + def fromlineno(self): + """The first line that this node appears on in the source code. + + :type: int or None + """ + # lineno is the line number of the first decorator, we want the def + # statement lineno + lineno = self.lineno + if self.decorators is not None: + lineno += sum( + node.tolineno - node.lineno + 1 for node in self.decorators.nodes + ) + + return lineno + + @decorators_mod.cachedproperty + def blockstart_tolineno(self): + """The line on which the beginning of this block ends. + + :type: int + """ + return self.args.tolineno + + def block_range(self, lineno): + """Get a range from the given line number to where this node ends. + + :param lineno: Unused. + :type lineno: int + + :returns: The range of line numbers that this node belongs to, + :rtype: tuple(int, int) + """ + return self.fromlineno, self.tolineno + + def getattr(self, name, context=None): + """this method doesn't look in the instance_attrs dictionary since it's + done by an Instance proxy at inference time. + """ + if name in self.instance_attrs: + return self.instance_attrs[name] + if name in self.special_attributes: + return [self.special_attributes.lookup(name)] + raise exceptions.AttributeInferenceError(target=self, attribute=name) + + def igetattr(self, name, context=None): + """Inferred getattr, which returns an iterator of inferred statements.""" + try: + return bases._infer_stmts(self.getattr(name, context), context, frame=self) + except exceptions.AttributeInferenceError as error: + raise exceptions.InferenceError( + error.message, target=self, attribute=name, context=context + ) from error + + def is_method(self): + """Check if this function node represents a method. + + :returns: True if this is a method, False otherwise. + :rtype: bool + """ + # check we are defined in a ClassDef, because this is usually expected + # (e.g. pylint...) when is_method() return True + return self.type != "function" and isinstance(self.parent.frame(), ClassDef) + + @decorators_mod.cached + def decoratornames(self): + """Get the qualified names of each of the decorators on this function. + + :returns: The names of the decorators. + :rtype: set(str) + """ + result = set() + decoratornodes = [] + if self.decorators is not None: + decoratornodes += self.decorators.nodes + decoratornodes += self.extra_decorators + for decnode in decoratornodes: + try: + for infnode in decnode.infer(): + result.add(infnode.qname()) + except exceptions.InferenceError: + continue + return result + + def is_bound(self): + """Check if the function is bound to an instance or class. + + :returns: True if the function is bound to an instance or class, + False otherwise. + :rtype: bool + """ + return self.type == "classmethod" + + def is_abstract(self, pass_is_abstract=True): + """Check if the method is abstract. + + A method is considered abstract if any of the following is true: + * The only statement is 'raise NotImplementedError' + * The only statement is 'pass' and pass_is_abstract is True + * The method is annotated with abc.astractproperty/abc.abstractmethod + + :returns: True if the method is abstract, False otherwise. + :rtype: bool + """ + if self.decorators: + for node in self.decorators.nodes: + try: + inferred = next(node.infer()) + except exceptions.InferenceError: + continue + if inferred and inferred.qname() in ( + "abc.abstractproperty", + "abc.abstractmethod", + ): + return True + + for child_node in self.body: + if isinstance(child_node, node_classes.Raise): + if child_node.raises_not_implemented(): + return True + return pass_is_abstract and isinstance(child_node, node_classes.Pass) + # empty function is the same as function with a single "pass" statement + if pass_is_abstract: + return True + + def is_generator(self): + """Check if this is a generator function. + + :returns: True is this is a generator function, False otherwise. + :rtype: bool + """ + return next(self._get_yield_nodes_skip_lambdas(), False) + + def infer_call_result(self, caller=None, context=None): + """Infer what the function returns when called. + + :returns: What the function returns. + :rtype: iterable(NodeNG or Uninferable) or None + """ + if self.is_generator(): + if isinstance(self, AsyncFunctionDef): + generator_cls = bases.AsyncGenerator + else: + generator_cls = bases.Generator + result = generator_cls(self) + yield result + return + # This is really a gigantic hack to work around metaclass generators + # that return transient class-generating functions. Pylint's AST structure + # cannot handle a base class object that is only used for calling __new__, + # but does not contribute to the inheritance structure itself. We inject + # a fake class into the hierarchy here for several well-known metaclass + # generators, and filter it out later. + if ( + self.name == "with_metaclass" + and len(self.args.args) == 1 + and self.args.vararg is not None + ): + metaclass = next(caller.args[0].infer(context)) + if isinstance(metaclass, ClassDef): + class_bases = [next(arg.infer(context)) for arg in caller.args[1:]] + new_class = ClassDef(name="temporary_class") + new_class.hide = True + new_class.parent = self + new_class.postinit( + bases=[base for base in class_bases if base != util.Uninferable], + body=[], + decorators=[], + metaclass=metaclass, + ) + yield new_class + return + returns = self._get_return_nodes_skip_functions() + + first_return = next(returns, None) + if not first_return: + if self.body and isinstance(self.body[-1], node_classes.Assert): + yield node_classes.Const(None) + return + + raise exceptions.InferenceError( + "The function does not have any return statements" + ) + + for returnnode in itertools.chain((first_return,), returns): + if returnnode.value is None: + yield node_classes.Const(None) + else: + try: + yield from returnnode.value.infer(context) + except exceptions.InferenceError: + yield util.Uninferable + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For a :class:`FunctionDef` this is always ``True``. + :rtype: bool + """ + return True + + def get_children(self): + if self.decorators is not None: + yield self.decorators + + yield self.args + + if self.returns is not None: + yield self.returns + + yield from self.body + + def scope_lookup(self, node, name, offset=0): + """Lookup where the given name is assigned.""" + if name == "__class__": + # __class__ is an implicit closure reference created by the compiler + # if any methods in a class body refer to either __class__ or super. + # In our case, we want to be able to look it up in the current scope + # when `__class__` is being used. + frame = self.parent.frame() + if isinstance(frame, ClassDef): + return self, [frame] + return super().scope_lookup(node, name, offset) + + +class AsyncFunctionDef(FunctionDef): + """Class representing an :class:`ast.FunctionDef` node. + + A :class:`AsyncFunctionDef` is an asynchronous function + created with the `async` keyword. + + >>> node = astroid.extract_node(''' + async def func(things): + async for thing in things: + print(thing) + ''') + >>> node + + >>> node.body[0] + + """ + + +def _rec_get_names(args, names=None): + """return a list of all argument names""" + if names is None: + names = [] + for arg in args: + if isinstance(arg, node_classes.Tuple): + _rec_get_names(arg.elts, names) + else: + names.append(arg.name) + return names + + +def _is_metaclass(klass, seen=None): + """ Return if the given class can be + used as a metaclass. + """ + if klass.name == "type": + return True + if seen is None: + seen = set() + for base in klass.bases: + try: + for baseobj in base.infer(): + baseobj_name = baseobj.qname() + if baseobj_name in seen: + continue + + seen.add(baseobj_name) + if isinstance(baseobj, bases.Instance): + # not abstract + return False + if baseobj is util.Uninferable: + continue + if baseobj is klass: + continue + if not isinstance(baseobj, ClassDef): + continue + if baseobj._type == "metaclass": + return True + if _is_metaclass(baseobj, seen): + return True + except exceptions.InferenceError: + continue + return False + + +def _class_type(klass, ancestors=None): + """return a ClassDef node type to differ metaclass and exception + from 'regular' classes + """ + # XXX we have to store ancestors in case we have an ancestor loop + if klass._type is not None: + return klass._type + if _is_metaclass(klass): + klass._type = "metaclass" + elif klass.name.endswith("Exception"): + klass._type = "exception" + else: + if ancestors is None: + ancestors = set() + klass_name = klass.qname() + if klass_name in ancestors: + # XXX we are in loop ancestors, and have found no type + klass._type = "class" + return "class" + ancestors.add(klass_name) + for base in klass.ancestors(recurs=False): + name = _class_type(base, ancestors) + if name != "class": + if name == "metaclass" and not _is_metaclass(klass): + # don't propagate it if the current class + # can't be a metaclass + continue + klass._type = base.type + break + if klass._type is None: + klass._type = "class" + return klass._type + + +def get_wrapping_class(node): + """Get the class that wraps the given node. + + We consider that a class wraps a node if the class + is a parent for the said node. + + :returns: The class that wraps the given node + :rtype: ClassDef or None + """ + + klass = node.frame() + while klass is not None and not isinstance(klass, ClassDef): + if klass.parent is None: + klass = None + else: + klass = klass.parent.frame() + return klass + + +class ClassDef(mixins.FilterStmtsMixin, LocalsDictNodeNG, node_classes.Statement): + """Class representing an :class:`ast.ClassDef` node. + + >>> node = astroid.extract_node(''' + class Thing: + def my_meth(self, arg): + return arg + self.offset + ''') + >>> node + + """ + + # some of the attributes below are set by the builder module or + # by a raw factories + + # a dictionary of class instances attributes + _astroid_fields = ("decorators", "bases", "body") # name + + decorators = None + """The decorators that are applied to this class. + + :type: Decorators or None + """ + special_attributes = objectmodel.ClassModel() + """The names of special attributes that this class has. + + :type: objectmodel.ClassModel + """ + + _type = None + _metaclass_hack = False + hide = False + type = property( + _class_type, + doc=( + "The class type for this node.\n\n" + "Possible values are: class, metaclass, exception.\n\n" + ":type: str" + ), + ) + _other_fields = ("name", "doc") + _other_other_fields = ("locals", "_newstyle") + _newstyle = None + + def __init__(self, name=None, doc=None, lineno=None, col_offset=None, parent=None): + """ + :param name: The name of the class. + :type name: str or None + + :param doc: The function's docstring. + :type doc: str or None + + :param lineno: The line that this node appears on in the source code. + :type lineno: int or None + + :param col_offset: The column that this node appears on in the + source code. + :type col_offset: int or None + + :param parent: The parent node in the syntax tree. + :type parent: NodeNG or None + """ + self.instance_attrs = {} + self.locals = {} + """A map of the name of a local variable to the node defining it. + + :type: dict(str, NodeNG) + """ + + self.keywords = [] + """The keywords given to the class definition. + + This is usually for :pep:`3115` style metaclass declaration. + + :type: list(Keyword) or None + """ + + self.bases = [] + """What the class inherits from. + + :type: list(NodeNG) + """ + + self.body = [] + """The contents of the class body. + + :type: list(NodeNG) + """ + + self.name = name + """The name of the class. + + :type name: str or None + """ + + self.doc = doc + """The class' docstring. + + :type doc: str or None + """ + + super(ClassDef, self).__init__(lineno, col_offset, parent) + if parent is not None: + parent.frame().set_local(name, self) + + for local_name, node in self.implicit_locals(): + self.add_local_node(node, local_name) + + def implicit_parameters(self): + return 1 + + def implicit_locals(self): + """Get implicitly defined class definition locals. + + :returns: the the name and Const pair for each local + :rtype: tuple(tuple(str, node_classes.Const), ...) + """ + locals_ = (("__module__", self.special_attributes.attr___module__),) + # __qualname__ is defined in PEP3155 + locals_ += (("__qualname__", self.special_attributes.attr___qualname__),) + return locals_ + + # pylint: disable=redefined-outer-name + def postinit( + self, bases, body, decorators, newstyle=None, metaclass=None, keywords=None + ): + """Do some setup after initialisation. + + :param bases: What the class inherits from. + :type bases: list(NodeNG) + + :param body: The contents of the class body. + :type body: list(NodeNG) + + :param decorators: The decorators that are applied to this class. + :type decorators: Decorators or None + + :param newstyle: Whether this is a new style class or not. + :type newstyle: bool or None + + :param metaclass: The metaclass of this class. + :type metaclass: NodeNG or None + + :param keywords: The keywords given to the class definition. + :type keywords: list(Keyword) or None + """ + self.keywords = keywords + self.bases = bases + self.body = body + self.decorators = decorators + if newstyle is not None: + self._newstyle = newstyle + if metaclass is not None: + self._metaclass = metaclass + + def _newstyle_impl(self, context=None): + if context is None: + context = contextmod.InferenceContext() + if self._newstyle is not None: + return self._newstyle + for base in self.ancestors(recurs=False, context=context): + if base._newstyle_impl(context): + self._newstyle = True + break + klass = self.declared_metaclass() + # could be any callable, we'd need to infer the result of klass(name, + # bases, dict). punt if it's not a class node. + if klass is not None and isinstance(klass, ClassDef): + self._newstyle = klass._newstyle_impl(context) + if self._newstyle is None: + self._newstyle = False + return self._newstyle + + _newstyle = None + newstyle = property( + _newstyle_impl, + doc=("Whether this is a new style class or not\n\n" ":type: bool or None"), + ) + + @decorators_mod.cachedproperty + def blockstart_tolineno(self): + """The line on which the beginning of this block ends. + + :type: int + """ + if self.bases: + return self.bases[-1].tolineno + + return self.fromlineno + + def block_range(self, lineno): + """Get a range from the given line number to where this node ends. + + :param lineno: Unused. + :type lineno: int + + :returns: The range of line numbers that this node belongs to, + :rtype: tuple(int, int) + """ + return self.fromlineno, self.tolineno + + def pytype(self): + """Get the name of the type that this node represents. + + :returns: The name of the type. + :rtype: str + """ + if self.newstyle: + return "%s.type" % BUILTINS + return "%s.classobj" % BUILTINS + + def display_type(self): + """A human readable type of this node. + + :returns: The type of this node. + :rtype: str + """ + return "Class" + + def callable(self): + """Whether this node defines something that is callable. + + :returns: True if this defines something that is callable, + False otherwise. + For a :class:`ClassDef` this is always ``True``. + :rtype: bool + """ + return True + + def is_subtype_of(self, type_name, context=None): + """Whether this class is a subtype of the given type. + + :param type_name: The name of the type of check against. + :type type_name: str + + :returns: True if this class is a subtype of the given type, + False otherwise. + :rtype: bool + """ + if self.qname() == type_name: + return True + for anc in self.ancestors(context=context): + if anc.qname() == type_name: + return True + return False + + def _infer_type_call(self, caller, context): + name_node = next(caller.args[0].infer(context)) + if isinstance(name_node, node_classes.Const) and isinstance( + name_node.value, str + ): + name = name_node.value + else: + return util.Uninferable + + result = ClassDef(name, None) + + # Get the bases of the class. + class_bases = next(caller.args[1].infer(context)) + if isinstance(class_bases, (node_classes.Tuple, node_classes.List)): + result.bases = class_bases.itered() + else: + # There is currently no AST node that can represent an 'unknown' + # node (Uninferable is not an AST node), therefore we simply return Uninferable here + # although we know at least the name of the class. + return util.Uninferable + + # Get the members of the class + try: + members = next(caller.args[2].infer(context)) + except exceptions.InferenceError: + members = None + + if members and isinstance(members, node_classes.Dict): + for attr, value in members.items: + if isinstance(attr, node_classes.Const) and isinstance(attr.value, str): + result.locals[attr.value] = [value] + + result.parent = caller.parent + return result + + def infer_call_result(self, caller, context=None): + """infer what a class is returning when called""" + if ( + self.is_subtype_of("%s.type" % (BUILTINS,), context) + and len(caller.args) == 3 + ): + result = self._infer_type_call(caller, context) + yield result + return + + dunder_call = None + try: + metaclass = self.metaclass(context=context) + if metaclass is not None: + dunder_call = next(metaclass.igetattr("__call__", context)) + except exceptions.AttributeInferenceError: + pass + + if dunder_call and dunder_call.qname() != "builtins.type.__call__": + # Call type.__call__ if not set metaclass + # (since type is the default metaclass) + context = contextmod.bind_context_to_node(context, self) + yield from dunder_call.infer_call_result(caller, context) + else: + if any(cls.name in EXCEPTION_BASE_CLASSES for cls in self.mro()): + # Subclasses of exceptions can be exception instances + yield objects.ExceptionInstance(self) + else: + yield bases.Instance(self) + + def scope_lookup(self, node, name, offset=0): + """Lookup where the given name is assigned. + + :param node: The node to look for assignments up to. + Any assignments after the given node are ignored. + :type node: NodeNG + + :param name: The name to find assignments for. + :type name: str + + :param offset: The line offset to filter statements up to. + :type offset: int + + :returns: This scope node and the list of assignments associated to the + given name according to the scope where it has been found (locals, + globals or builtin). + :rtype: tuple(str, list(NodeNG)) + """ + # If the name looks like a builtin name, just try to look + # into the upper scope of this class. We might have a + # decorator that it's poorly named after a builtin object + # inside this class. + lookup_upper_frame = ( + isinstance(node.parent, node_classes.Decorators) + and name in MANAGER.builtins_module + ) + if ( + any(node == base or base.parent_of(node) for base in self.bases) + or lookup_upper_frame + ): + # Handle the case where we have either a name + # in the bases of a class, which exists before + # the actual definition or the case where we have + # a Getattr node, with that name. + # + # name = ... + # class A(name): + # def name(self): ... + # + # import name + # class A(name.Name): + # def name(self): ... + + frame = self.parent.frame() + # line offset to avoid that class A(A) resolve the ancestor to + # the defined class + offset = -1 + else: + frame = self + return frame._scope_lookup(node, name, offset) + + @property + def basenames(self): + """The names of the parent classes + + Names are given in the order they appear in the class definition. + + :type: list(str) + """ + return [bnode.as_string() for bnode in self.bases] + + def ancestors(self, recurs=True, context=None): + """Iterate over the base classes in prefixed depth first order. + + :param recurs: Whether to recurse or return direct ancestors only. + :type recurs: bool + + :returns: The base classes + :rtype: iterable(NodeNG) + """ + # FIXME: should be possible to choose the resolution order + # FIXME: inference make infinite loops possible here + yielded = {self} + if context is None: + context = contextmod.InferenceContext() + if not self.bases and self.qname() != "builtins.object": + yield builtin_lookup("object")[1][0] + return + + for stmt in self.bases: + with context.restore_path(): + try: + for baseobj in stmt.infer(context): + if not isinstance(baseobj, ClassDef): + if isinstance(baseobj, bases.Instance): + baseobj = baseobj._proxied + else: + continue + if not baseobj.hide: + if baseobj in yielded: + continue + yielded.add(baseobj) + yield baseobj + if not recurs: + continue + for grandpa in baseobj.ancestors(recurs=True, context=context): + if grandpa is self: + # This class is the ancestor of itself. + break + if grandpa in yielded: + continue + yielded.add(grandpa) + yield grandpa + except exceptions.InferenceError: + continue + + def local_attr_ancestors(self, name, context=None): + """Iterate over the parents that define the given name. + + :param name: The name to find definitions for. + :type name: str + + :returns: The parents that define the given name. + :rtype: iterable(NodeNG) + """ + # Look up in the mro if we can. This will result in the + # attribute being looked up just as Python does it. + try: + ancestors = self.mro(context)[1:] + except exceptions.MroError: + # Fallback to use ancestors, we can't determine + # a sane MRO. + ancestors = self.ancestors(context=context) + for astroid in ancestors: + if name in astroid: + yield astroid + + def instance_attr_ancestors(self, name, context=None): + """Iterate over the parents that define the given name as an attribute. + + :param name: The name to find definitions for. + :type name: str + + :returns: The parents that define the given name as + an instance attribute. + :rtype: iterable(NodeNG) + """ + for astroid in self.ancestors(context=context): + if name in astroid.instance_attrs: + yield astroid + + def has_base(self, node): + """Whether this class directly inherits from the given node. + + :param node: The node to check for. + :type node: NodeNG + + :returns: True if this class directly inherits from the given node. + :rtype: bool + """ + return node in self.bases + + def local_attr(self, name, context=None): + """Get the list of assign nodes associated to the given name. + + Assignments are looked for in both this class and in parents. + + :returns: The list of assignments to the given name. + :rtype: list(NodeNG) + + :raises AttributeInferenceError: If no attribute with this name + can be found in this class or parent classes. + """ + result = [] + if name in self.locals: + result = self.locals[name] + else: + class_node = next(self.local_attr_ancestors(name, context), None) + if class_node: + result = class_node.locals[name] + result = [n for n in result if not isinstance(n, node_classes.DelAttr)] + if result: + return result + raise exceptions.AttributeInferenceError( + target=self, attribute=name, context=context + ) + + def instance_attr(self, name, context=None): + """Get the list of nodes associated to the given attribute name. + + Assignments are looked for in both this class and in parents. + + :returns: The list of assignments to the given name. + :rtype: list(NodeNG) + + :raises AttributeInferenceError: If no attribute with this name + can be found in this class or parent classes. + """ + # Return a copy, so we don't modify self.instance_attrs, + # which could lead to infinite loop. + values = list(self.instance_attrs.get(name, [])) + # get all values from parents + for class_node in self.instance_attr_ancestors(name, context): + values += class_node.instance_attrs[name] + values = [n for n in values if not isinstance(n, node_classes.DelAttr)] + if values: + return values + raise exceptions.AttributeInferenceError( + target=self, attribute=name, context=context + ) + + def instantiate_class(self): + """Get an :class:`Instance` of the :class:`ClassDef` node. + + :returns: An :class:`Instance` of the :class:`ClassDef` node, + or self if this is not possible. + :rtype: Instance or ClassDef + """ + return bases.Instance(self) + + def getattr(self, name, context=None, class_context=True): + """Get an attribute from this class, using Python's attribute semantic. + + This method doesn't look in the :attr:`instance_attrs` dictionary + since it is done by an :class:`Instance` proxy at inference time. + It may return an :class:`Uninferable` object if + the attribute has not been + found, but a ``__getattr__`` or ``__getattribute__`` method is defined. + If ``class_context`` is given, then it is considered that the + attribute is accessed from a class context, + e.g. ClassDef.attribute, otherwise it might have been accessed + from an instance as well. If ``class_context`` is used in that + case, then a lookup in the implicit metaclass and the explicit + metaclass will be done. + + :param name: The attribute to look for. + :type name: str + + :param class_context: Whether the attribute can be accessed statically. + :type class_context: bool + + :returns: The attribute. + :rtype: list(NodeNG) + + :raises AttributeInferenceError: If the attribute cannot be inferred. + """ + values = self.locals.get(name, []) + if name in self.special_attributes and class_context and not values: + result = [self.special_attributes.lookup(name)] + if name == "__bases__": + # Need special treatment, since they are mutable + # and we need to return all the values. + result += values + return result + + # don't modify the list in self.locals! + values = list(values) + for classnode in self.ancestors(recurs=True, context=context): + values += classnode.locals.get(name, []) + + if class_context: + values += self._metaclass_lookup_attribute(name, context) + + if not values: + raise exceptions.AttributeInferenceError( + target=self, attribute=name, context=context + ) + + # Look for AnnAssigns, which are not attributes in the purest sense. + for value in values: + if isinstance(value, node_classes.AssignName): + stmt = value.statement() + if isinstance(stmt, node_classes.AnnAssign) and stmt.value is None: + raise exceptions.AttributeInferenceError( + target=self, attribute=name, context=context + ) + return values + + def _metaclass_lookup_attribute(self, name, context): + """Search the given name in the implicit and the explicit metaclass.""" + attrs = set() + implicit_meta = self.implicit_metaclass() + metaclass = self.metaclass() + for cls in {implicit_meta, metaclass}: + if cls and cls != self and isinstance(cls, ClassDef): + cls_attributes = self._get_attribute_from_metaclass(cls, name, context) + attrs.update(set(cls_attributes)) + return attrs + + def _get_attribute_from_metaclass(self, cls, name, context): + try: + attrs = cls.getattr(name, context=context, class_context=True) + except exceptions.AttributeInferenceError: + return + + for attr in bases._infer_stmts(attrs, context, frame=cls): + if not isinstance(attr, FunctionDef): + yield attr + continue + + if bases._is_property(attr): + yield from attr.infer_call_result(self, context) + continue + if attr.type == "classmethod": + # If the method is a classmethod, then it will + # be bound to the metaclass, not to the class + # from where the attribute is retrieved. + # get_wrapping_class could return None, so just + # default to the current class. + frame = get_wrapping_class(attr) or self + yield bases.BoundMethod(attr, frame) + elif attr.type == "staticmethod": + yield attr + else: + yield bases.BoundMethod(attr, self) + + def igetattr(self, name, context=None, class_context=True): + """Infer the possible values of the given variable. + + :param name: The name of the variable to infer. + :type name: str + + :returns: The inferred possible values. + :rtype: iterable(NodeNG or Uninferable) + """ + # set lookup name since this is necessary to infer on import nodes for + # instance + context = contextmod.copy_context(context) + context.lookupname = name + try: + attr = self.getattr(name, context, class_context=class_context)[0] + for inferred in bases._infer_stmts([attr], context, frame=self): + # yield Uninferable object instead of descriptors when necessary + if not isinstance(inferred, node_classes.Const) and isinstance( + inferred, bases.Instance + ): + try: + inferred._proxied.getattr("__get__", context) + except exceptions.AttributeInferenceError: + yield inferred + else: + yield util.Uninferable + else: + yield function_to_method(inferred, self) + except exceptions.AttributeInferenceError as error: + if not name.startswith("__") and self.has_dynamic_getattr(context): + # class handle some dynamic attributes, return a Uninferable object + yield util.Uninferable + else: + raise exceptions.InferenceError( + error.message, target=self, attribute=name, context=context + ) + + def has_dynamic_getattr(self, context=None): + """Check if the class has a custom __getattr__ or __getattribute__. + + If any such method is found and it is not from + builtins, nor from an extension module, then the function + will return True. + + :returns: True if the class has a custom + __getattr__ or __getattribute__, False otherwise. + :rtype: bool + """ + + def _valid_getattr(node): + root = node.root() + return root.name != BUILTINS and getattr(root, "pure_python", None) + + try: + return _valid_getattr(self.getattr("__getattr__", context)[0]) + except exceptions.AttributeInferenceError: + # if self.newstyle: XXX cause an infinite recursion error + try: + getattribute = self.getattr("__getattribute__", context)[0] + return _valid_getattr(getattribute) + except exceptions.AttributeInferenceError: + pass + return False + + def getitem(self, index, context=None): + """Return the inference of a subscript. + + This is basically looking up the method in the metaclass and calling it. + + :returns: The inferred value of a subscript to this class. + :rtype: NodeNG + + :raises AstroidTypeError: If this class does not define a + ``__getitem__`` method. + """ + try: + methods = dunder_lookup.lookup(self, "__getitem__") + except exceptions.AttributeInferenceError as exc: + raise exceptions.AstroidTypeError(node=self, context=context) from exc + + method = methods[0] + + # Create a new callcontext for providing index as an argument. + new_context = contextmod.bind_context_to_node(context, self) + new_context.callcontext = contextmod.CallContext(args=[index]) + + try: + return next(method.infer_call_result(self, new_context)) + except exceptions.InferenceError: + return util.Uninferable + + def methods(self): + """Iterate over all of the method defined in this class and its parents. + + :returns: The methods defined on the class. + :rtype: iterable(FunctionDef) + """ + done = {} + for astroid in itertools.chain(iter((self,)), self.ancestors()): + for meth in astroid.mymethods(): + if meth.name in done: + continue + done[meth.name] = None + yield meth + + def mymethods(self): + """Iterate over all of the method defined in this class only. + + :returns: The methods defined on the class. + :rtype: iterable(FunctionDef) + """ + for member in self.values(): + if isinstance(member, FunctionDef): + yield member + + def implicit_metaclass(self): + """Get the implicit metaclass of the current class. + + For newstyle classes, this will return an instance of builtins.type. + For oldstyle classes, it will simply return None, since there's + no implicit metaclass there. + + :returns: The metaclass. + :rtype: builtins.type or None + """ + if self.newstyle: + return builtin_lookup("type")[1][0] + return None + + _metaclass = None + + def declared_metaclass(self, context=None): + """Return the explicit declared metaclass for the current class. + + An explicit declared metaclass is defined + either by passing the ``metaclass`` keyword argument + in the class definition line (Python 3) or (Python 2) by + having a ``__metaclass__`` class attribute, or if there are + no explicit bases but there is a global ``__metaclass__`` variable. + + :returns: The metaclass of this class, + or None if one could not be found. + :rtype: NodeNG or None + """ + for base in self.bases: + try: + for baseobj in base.infer(context=context): + if isinstance(baseobj, ClassDef) and baseobj.hide: + self._metaclass = baseobj._metaclass + self._metaclass_hack = True + break + except exceptions.InferenceError: + pass + + if self._metaclass: + # Expects this from Py3k TreeRebuilder + try: + return next( + node + for node in self._metaclass.infer(context=context) + if node is not util.Uninferable + ) + except (exceptions.InferenceError, StopIteration): + return None + + return None + + def _find_metaclass(self, seen=None, context=None): + if seen is None: + seen = set() + seen.add(self) + + klass = self.declared_metaclass(context=context) + if klass is None: + for parent in self.ancestors(context=context): + if parent not in seen: + klass = parent._find_metaclass(seen) + if klass is not None: + break + return klass + + def metaclass(self, context=None): + """Get the metaclass of this class. + + If this class does not define explicitly a metaclass, + then the first defined metaclass in ancestors will be used + instead. + + :returns: The metaclass of this class. + :rtype: NodeNG or None + """ + return self._find_metaclass(context=context) + + def has_metaclass_hack(self): + return self._metaclass_hack + + def _islots(self): + """ Return an iterator with the inferred slots. """ + if "__slots__" not in self.locals: + return None + for slots in self.igetattr("__slots__"): + # check if __slots__ is a valid type + for meth in ITER_METHODS: + try: + slots.getattr(meth) + break + except exceptions.AttributeInferenceError: + continue + else: + continue + + if isinstance(slots, node_classes.Const): + # a string. Ignore the following checks, + # but yield the node, only if it has a value + if slots.value: + yield slots + continue + if not hasattr(slots, "itered"): + # we can't obtain the values, maybe a .deque? + continue + + if isinstance(slots, node_classes.Dict): + values = [item[0] for item in slots.items] + else: + values = slots.itered() + if values is util.Uninferable: + continue + if not values: + # Stop the iteration, because the class + # has an empty list of slots. + return values + + for elt in values: + try: + for inferred in elt.infer(): + if inferred is util.Uninferable: + continue + if not isinstance( + inferred, node_classes.Const + ) or not isinstance(inferred.value, str): + continue + if not inferred.value: + continue + yield inferred + except exceptions.InferenceError: + continue + + return None + + def _slots(self): + if not self.newstyle: + raise NotImplementedError( + "The concept of slots is undefined for old-style classes." + ) + + slots = self._islots() + try: + first = next(slots) + except StopIteration as exc: + # The class doesn't have a __slots__ definition or empty slots. + if exc.args and exc.args[0] not in ("", None): + return exc.args[0] + return None + return [first] + list(slots) + + # Cached, because inferring them all the time is expensive + @decorators_mod.cached + def slots(self): + """Get all the slots for this node. + + :returns: The names of slots for this class. + If the class doesn't define any slot, through the ``__slots__`` + variable, then this function will return a None. + Also, it will return None in the case the slots were not inferred. + :rtype: list(str) or None + """ + + def grouped_slots(): + # Not interested in object, since it can't have slots. + for cls in self.mro()[:-1]: + try: + cls_slots = cls._slots() + except NotImplementedError: + continue + if cls_slots is not None: + yield from cls_slots + else: + yield None + + if not self.newstyle: + raise NotImplementedError( + "The concept of slots is undefined for old-style classes." + ) + + slots = list(grouped_slots()) + if not all(slot is not None for slot in slots): + return None + + return sorted(slots, key=lambda item: item.value) + + def _inferred_bases(self, context=None): + # Similar with .ancestors, but the difference is when one base is inferred, + # only the first object is wanted. That's because + # we aren't interested in superclasses, as in the following + # example: + # + # class SomeSuperClass(object): pass + # class SomeClass(SomeSuperClass): pass + # class Test(SomeClass): pass + # + # Inferring SomeClass from the Test's bases will give + # us both SomeClass and SomeSuperClass, but we are interested + # only in SomeClass. + + if context is None: + context = contextmod.InferenceContext() + if not self.bases and self.qname() != "builtins.object": + yield builtin_lookup("object")[1][0] + return + + for stmt in self.bases: + try: + baseobj = next(stmt.infer(context=context)) + except exceptions.InferenceError: + continue + if isinstance(baseobj, bases.Instance): + baseobj = baseobj._proxied + if not isinstance(baseobj, ClassDef): + continue + if not baseobj.hide: + yield baseobj + else: + yield from baseobj.bases + + def _compute_mro(self, context=None): + inferred_bases = list(self._inferred_bases(context=context)) + bases_mro = [] + for base in inferred_bases: + if base is self: + continue + + try: + mro = base._compute_mro(context=context) + bases_mro.append(mro) + except NotImplementedError: + # Some classes have in their ancestors both newstyle and + # old style classes. For these we can't retrieve the .mro, + # although in Python it's possible, since the class we are + # currently working is in fact new style. + # So, we fallback to ancestors here. + ancestors = list(base.ancestors(context=context)) + bases_mro.append(ancestors) + + unmerged_mro = [[self]] + bases_mro + [inferred_bases] + unmerged_mro = list(clean_duplicates_mro(unmerged_mro, self, context)) + return _c3_merge(unmerged_mro, self, context) + + def mro(self, context=None) -> List["ClassDef"]: + """Get the method resolution order, using C3 linearization. + + :returns: The list of ancestors, sorted by the mro. + :rtype: list(NodeNG) + :raises DuplicateBasesError: Duplicate bases in the same class base + :raises InconsistentMroError: A class' MRO is inconsistent + """ + return self._compute_mro(context=context) + + def bool_value(self): + """Determine the boolean value of this node. + + :returns: The boolean value of this node. + For a :class:`ClassDef` this is always ``True``. + :rtype: bool + """ + return True + + def get_children(self): + if self.decorators is not None: + yield self.decorators + + yield from self.bases + yield from self.body + + @decorators_mod.cached + def _get_assign_nodes(self): + children_assign_nodes = ( + child_node._get_assign_nodes() for child_node in self.body + ) + return list(itertools.chain.from_iterable(children_assign_nodes)) diff --git a/venv/Lib/site-packages/astroid/test_utils.py b/venv/Lib/site-packages/astroid/test_utils.py new file mode 100644 index 0000000..6c965ef --- /dev/null +++ b/venv/Lib/site-packages/astroid/test_utils.py @@ -0,0 +1,73 @@ +# Copyright (c) 2013-2014 Google, Inc. +# Copyright (c) 2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2015-2016, 2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2018 Anthony Sottile + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +"""Utility functions for test code that uses astroid ASTs as input.""" +import contextlib +import functools +import sys +import warnings + +import pytest + +from astroid import nodes + + +def require_version(minver=None, maxver=None): + """ Compare version of python interpreter to the given one. Skip the test + if older. + """ + + def parse(string, default=None): + string = string or default + try: + return tuple(int(v) for v in string.split(".")) + except ValueError as exc: + raise ValueError( + "{string} is not a correct version : should be X.Y[.Z].".format( + string=string + ) + ) from exc + + def check_require_version(f): + current = sys.version_info[:3] + if parse(minver, "0") < current <= parse(maxver, "4"): + return f + + str_version = ".".join(str(v) for v in sys.version_info) + + @functools.wraps(f) + def new_f(*args, **kwargs): + if minver is not None: + pytest.skip( + "Needs Python > %s. Current version is %s." % (minver, str_version) + ) + elif maxver is not None: + pytest.skip( + "Needs Python <= %s. Current version is %s." % (maxver, str_version) + ) + + return new_f + + return check_require_version + + +def get_name_node(start_from, name, index=0): + return [n for n in start_from.nodes_of_class(nodes.Name) if n.name == name][index] + + +@contextlib.contextmanager +def enable_warning(warning): + warnings.simplefilter("always", warning) + try: + yield + finally: + # Reset it to default value, so it will take + # into account the values from the -W flag. + warnings.simplefilter("default", warning) diff --git a/venv/Lib/site-packages/astroid/transforms.py b/venv/Lib/site-packages/astroid/transforms.py new file mode 100644 index 0000000..e5506cc --- /dev/null +++ b/venv/Lib/site-packages/astroid/transforms.py @@ -0,0 +1,90 @@ +# Copyright (c) 2015-2016, 2018 Claudiu Popa +# Copyright (c) 2016 Ceridwen +# Copyright (c) 2018 Nick Drozd + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + + +import collections +from functools import lru_cache + + +class TransformVisitor: + """A visitor for handling transforms. + + The standard approach of using it is to call + :meth:`~visit` with an *astroid* module and the class + will take care of the rest, walking the tree and running the + transforms for each encountered node. + """ + + TRANSFORM_MAX_CACHE_SIZE = 10000 + + def __init__(self): + self.transforms = collections.defaultdict(list) + + @lru_cache(maxsize=TRANSFORM_MAX_CACHE_SIZE) + def _transform(self, node): + """Call matching transforms for the given node if any and return the + transformed node. + """ + cls = node.__class__ + if cls not in self.transforms: + # no transform registered for this class of node + return node + + transforms = self.transforms[cls] + for transform_func, predicate in transforms: + if predicate is None or predicate(node): + ret = transform_func(node) + # if the transformation function returns something, it's + # expected to be a replacement for the node + if ret is not None: + node = ret + if ret.__class__ != cls: + # Can no longer apply the rest of the transforms. + break + return node + + def _visit(self, node): + if hasattr(node, "_astroid_fields"): + for name in node._astroid_fields: + value = getattr(node, name) + visited = self._visit_generic(value) + if visited != value: + setattr(node, name, visited) + return self._transform(node) + + def _visit_generic(self, node): + if isinstance(node, list): + return [self._visit_generic(child) for child in node] + if isinstance(node, tuple): + return tuple(self._visit_generic(child) for child in node) + if not node or isinstance(node, str): + return node + + return self._visit(node) + + def register_transform(self, node_class, transform, predicate=None): + """Register `transform(node)` function to be applied on the given + astroid's `node_class` if `predicate` is None or returns true + when called with the node as argument. + + The transform function may return a value which is then used to + substitute the original node in the tree. + """ + self.transforms[node_class].append((transform, predicate)) + + def unregister_transform(self, node_class, transform, predicate=None): + """Unregister the given transform.""" + self.transforms[node_class].remove((transform, predicate)) + + def visit(self, module): + """Walk the given astroid *tree* and transform each encountered node + + Only the nodes which have transforms registered will actually + be replaced or changed. + """ + module.body = [self._visit(child) for child in module.body] + return self._transform(module) diff --git a/venv/Lib/site-packages/astroid/util.py b/venv/Lib/site-packages/astroid/util.py new file mode 100644 index 0000000..3ab7561 --- /dev/null +++ b/venv/Lib/site-packages/astroid/util.py @@ -0,0 +1,164 @@ +# Copyright (c) 2015-2018 Claudiu Popa +# Copyright (c) 2015-2016 Ceridwen +# Copyright (c) 2018 Bryce Guinta +# Copyright (c) 2018 Nick Drozd + +# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html +# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER + +import warnings +from itertools import islice + +import importlib +import lazy_object_proxy + + +def lazy_descriptor(obj): + class DescriptorProxy(lazy_object_proxy.Proxy): + def __get__(self, instance, owner=None): + return self.__class__.__get__(self, instance) + + return DescriptorProxy(obj) + + +def lazy_import(module_name): + return lazy_object_proxy.Proxy( + lambda: importlib.import_module("." + module_name, "astroid") + ) + + +@object.__new__ +class Uninferable: + """Special inference object, which is returned when inference fails.""" + + def __repr__(self): + return "Uninferable" + + __str__ = __repr__ + + def __getattribute__(self, name): + if name == "next": + raise AttributeError("next method should not be called") + if name.startswith("__") and name.endswith("__"): + return object.__getattribute__(self, name) + if name == "accept": + return object.__getattribute__(self, name) + return self + + def __call__(self, *args, **kwargs): + return self + + def __bool__(self): + return False + + __nonzero__ = __bool__ + + def accept(self, visitor): + func = getattr(visitor, "visit_uninferable") + return func(self) + + +class BadOperationMessage: + """Object which describes a TypeError occurred somewhere in the inference chain + + This is not an exception, but a container object which holds the types and + the error which occurred. + """ + + +class BadUnaryOperationMessage(BadOperationMessage): + """Object which describes operational failures on UnaryOps.""" + + def __init__(self, operand, op, error): + self.operand = operand + self.op = op + self.error = error + + @property + def _object_type_helper(self): + helpers = lazy_import("helpers") + return helpers.object_type + + def _object_type(self, obj): + # pylint: disable=not-callable; can't infer lazy_import + objtype = self._object_type_helper(obj) + if objtype is Uninferable: + return None + + return objtype + + def __str__(self): + if hasattr(self.operand, "name"): + operand_type = self.operand.name + else: + object_type = self._object_type(self.operand) + if hasattr(object_type, "name"): + operand_type = object_type.name + else: + # Just fallback to as_string + operand_type = object_type.as_string() + + msg = "bad operand type for unary {}: {}" + return msg.format(self.op, operand_type) + + +class BadBinaryOperationMessage(BadOperationMessage): + """Object which describes type errors for BinOps.""" + + def __init__(self, left_type, op, right_type): + self.left_type = left_type + self.right_type = right_type + self.op = op + + def __str__(self): + msg = "unsupported operand type(s) for {}: {!r} and {!r}" + return msg.format(self.op, self.left_type.name, self.right_type.name) + + +def _instancecheck(cls, other): + wrapped = cls.__wrapped__ + other_cls = other.__class__ + is_instance_of = wrapped is other_cls or issubclass(other_cls, wrapped) + warnings.warn( + "%r is deprecated and slated for removal in astroid " + "2.0, use %r instead" % (cls.__class__.__name__, wrapped.__name__), + PendingDeprecationWarning, + stacklevel=2, + ) + return is_instance_of + + +def proxy_alias(alias_name, node_type): + """Get a Proxy from the given name to the given node type.""" + proxy = type( + alias_name, + (lazy_object_proxy.Proxy,), + { + "__class__": object.__dict__["__class__"], + "__instancecheck__": _instancecheck, + }, + ) + return proxy(lambda: node_type) + + +def limit_inference(iterator, size): + """Limit inference amount. + + Limit inference amount to help with performance issues with + exponentially exploding possible results. + + :param iterator: Inference generator to limit + :type iterator: Iterator(NodeNG) + + :param size: Maximum mount of nodes yielded plus an + Uninferable at the end if limit reached + :type size: int + + :yields: A possibly modified generator + :rtype param: Iterable + """ + yield from islice(iterator, size) + has_more = next(iterator, False) + if has_more is not False: + yield Uninferable + return diff --git a/venv/Lib/site-packages/colorama-0.4.3.dist-info/INSTALLER b/venv/Lib/site-packages/colorama-0.4.3.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/venv/Lib/site-packages/colorama-0.4.3.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/venv/Lib/site-packages/colorama-0.4.3.dist-info/LICENSE.txt b/venv/Lib/site-packages/colorama-0.4.3.dist-info/LICENSE.txt new file mode 100644 index 0000000..3105888 --- /dev/null +++ b/venv/Lib/site-packages/colorama-0.4.3.dist-info/LICENSE.txt @@ -0,0 +1,27 @@ +Copyright (c) 2010 Jonathan Hartley +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + +* Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + +* Neither the name of the copyright holders, nor those of its contributors + may be used to endorse or promote products derived from this software without + specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/venv/Lib/site-packages/colorama-0.4.3.dist-info/METADATA b/venv/Lib/site-packages/colorama-0.4.3.dist-info/METADATA new file mode 100644 index 0000000..c455cb5 --- /dev/null +++ b/venv/Lib/site-packages/colorama-0.4.3.dist-info/METADATA @@ -0,0 +1,411 @@ +Metadata-Version: 2.1 +Name: colorama +Version: 0.4.3 +Summary: Cross-platform colored terminal text. +Home-page: https://github.com/tartley/colorama +Author: Jonathan Hartley +Author-email: tartley@tartley.com +Maintainer: Arnon Yaari +License: BSD +Keywords: color colour terminal text ansi windows crossplatform xplatform +Platform: UNKNOWN +Classifier: Development Status :: 5 - Production/Stable +Classifier: Environment :: Console +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: BSD License +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: 3.8 +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Classifier: Topic :: Terminals +Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.* + +.. image:: https://img.shields.io/pypi/v/colorama.svg + :target: https://pypi.org/project/colorama/ + :alt: Latest Version + +.. image:: https://img.shields.io/pypi/pyversions/colorama.svg + :target: https://pypi.org/project/colorama/ + :alt: Supported Python versions + +.. image:: https://travis-ci.org/tartley/colorama.svg?branch=master + :target: https://travis-ci.org/tartley/colorama + :alt: Build Status + +Download and docs: + https://pypi.org/project/colorama/ +Source code & Development: + https://github.com/tartley/colorama +Colorama for Enterprise: + https://github.com/tartley/colorama/blob/master/ENTERPRISE.md + +Description +=========== + +Makes ANSI escape character sequences (for producing colored terminal text and +cursor positioning) work under MS Windows. + +ANSI escape character sequences have long been used to produce colored terminal +text and cursor positioning on Unix and Macs. Colorama makes this work on +Windows, too, by wrapping ``stdout``, stripping ANSI sequences it finds (which +would appear as gobbledygook in the output), and converting them into the +appropriate win32 calls to modify the state of the terminal. On other platforms, +Colorama does nothing. + +Colorama also provides some shortcuts to help generate ANSI sequences +but works fine in conjunction with any other ANSI sequence generation library, +such as the venerable Termcolor (https://pypi.org/project/termcolor/) +or the fabulous Blessings (https://pypi.org/project/blessings/). + +This has the upshot of providing a simple cross-platform API for printing +colored terminal text from Python, and has the happy side-effect that existing +applications or libraries which use ANSI sequences to produce colored output on +Linux or Macs can now also work on Windows, simply by calling +``colorama.init()``. + +An alternative approach is to install ``ansi.sys`` on Windows machines, which +provides the same behaviour for all applications running in terminals. Colorama +is intended for situations where that isn't easy (e.g., maybe your app doesn't +have an installer.) + +Demo scripts in the source code repository print some colored text using +ANSI sequences. Compare their output under Gnome-terminal's built in ANSI +handling, versus on Windows Command-Prompt using Colorama: + +.. image:: https://github.com/tartley/colorama/raw/master/screenshots/ubuntu-demo.png + :width: 661 + :height: 357 + :alt: ANSI sequences on Ubuntu under gnome-terminal. + +.. image:: https://github.com/tartley/colorama/raw/master/screenshots/windows-demo.png + :width: 668 + :height: 325 + :alt: Same ANSI sequences on Windows, using Colorama. + +These screengrabs show that, on Windows, Colorama does not support ANSI 'dim +text'; it looks the same as 'normal text'. + + +License +======= + +Copyright Jonathan Hartley & Arnon Yaari, 2013. BSD 3-Clause license; see LICENSE file. + + +Dependencies +============ + +None, other than Python. Tested on Python 2.7, 3.5, 3.6, 3.7 and 3.8. + +Usage +===== + +Initialisation +-------------- + +Applications should initialise Colorama using: + +.. code-block:: python + + from colorama import init + init() + +On Windows, calling ``init()`` will filter ANSI escape sequences out of any +text sent to ``stdout`` or ``stderr``, and replace them with equivalent Win32 +calls. + +On other platforms, calling ``init()`` has no effect (unless you request other +optional functionality; see "Init Keyword Args", below). By design, this permits +applications to call ``init()`` unconditionally on all platforms, after which +ANSI output should just work. + +To stop using colorama before your program exits, simply call ``deinit()``. +This will restore ``stdout`` and ``stderr`` to their original values, so that +Colorama is disabled. To resume using Colorama again, call ``reinit()``; it is +cheaper to calling ``init()`` again (but does the same thing). + + +Colored Output +-------------- + +Cross-platform printing of colored text can then be done using Colorama's +constant shorthand for ANSI escape sequences: + +.. code-block:: python + + from colorama import Fore, Back, Style + print(Fore.RED + 'some red text') + print(Back.GREEN + 'and with a green background') + print(Style.DIM + 'and in dim text') + print(Style.RESET_ALL) + print('back to normal now') + +...or simply by manually printing ANSI sequences from your own code: + +.. code-block:: python + + print('\033[31m' + 'some red text') + print('\033[39m') # and reset to default color + +...or, Colorama can be used happily in conjunction with existing ANSI libraries +such as Termcolor: + +.. code-block:: python + + from colorama import init + from termcolor import colored + + # use Colorama to make Termcolor work on Windows too + init() + + # then use Termcolor for all colored text output + print(colored('Hello, World!', 'green', 'on_red')) + +Available formatting constants are:: + + Fore: BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE, RESET. + Back: BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE, RESET. + Style: DIM, NORMAL, BRIGHT, RESET_ALL + +``Style.RESET_ALL`` resets foreground, background, and brightness. Colorama will +perform this reset automatically on program exit. + + +Cursor Positioning +------------------ + +ANSI codes to reposition the cursor are supported. See ``demos/demo06.py`` for +an example of how to generate them. + + +Init Keyword Args +----------------- + +``init()`` accepts some ``**kwargs`` to override default behaviour. + +init(autoreset=False): + If you find yourself repeatedly sending reset sequences to turn off color + changes at the end of every print, then ``init(autoreset=True)`` will + automate that: + + .. code-block:: python + + from colorama import init + init(autoreset=True) + print(Fore.RED + 'some red text') + print('automatically back to default color again') + +init(strip=None): + Pass ``True`` or ``False`` to override whether ansi codes should be + stripped from the output. The default behaviour is to strip if on Windows + or if output is redirected (not a tty). + +init(convert=None): + Pass ``True`` or ``False`` to override whether to convert ANSI codes in the + output into win32 calls. The default behaviour is to convert if on Windows + and output is to a tty (terminal). + +init(wrap=True): + On Windows, colorama works by replacing ``sys.stdout`` and ``sys.stderr`` + with proxy objects, which override the ``.write()`` method to do their work. + If this wrapping causes you problems, then this can be disabled by passing + ``init(wrap=False)``. The default behaviour is to wrap if ``autoreset`` or + ``strip`` or ``convert`` are True. + + When wrapping is disabled, colored printing on non-Windows platforms will + continue to work as normal. To do cross-platform colored output, you can + use Colorama's ``AnsiToWin32`` proxy directly: + + .. code-block:: python + + import sys + from colorama import init, AnsiToWin32 + init(wrap=False) + stream = AnsiToWin32(sys.stderr).stream + + # Python 2 + print >>stream, Fore.BLUE + 'blue text on stderr' + + # Python 3 + print(Fore.BLUE + 'blue text on stderr', file=stream) + + +Installation +======================= +colorama is currently installable from PyPI: + + pip install colorama + +colorama also can be installed by the conda package manager: + + conda install -c anaconda colorama + + +Status & Known Problems +======================= + +I've personally only tested it on Windows XP (CMD, Console2), Ubuntu +(gnome-terminal, xterm), and OS X. + +Some presumably valid ANSI sequences aren't recognised (see details below), +but to my knowledge nobody has yet complained about this. Puzzling. + +See outstanding issues and wishlist: +https://github.com/tartley/colorama/issues + +If anything doesn't work for you, or doesn't do what you expected or hoped for, +I'd love to hear about it on that issues list, would be delighted by patches, +and would be happy to grant commit access to anyone who submits a working patch +or two. + + +Recognised ANSI Sequences +========================= + +ANSI sequences generally take the form: + + ESC [ ; ... + +Where ```` is an integer, and ```` is a single letter. Zero or +more params are passed to a ````. If no params are passed, it is +generally synonymous with passing a single zero. No spaces exist in the +sequence; they have been inserted here simply to read more easily. + +The only ANSI sequences that colorama converts into win32 calls are:: + + ESC [ 0 m # reset all (colors and brightness) + ESC [ 1 m # bright + ESC [ 2 m # dim (looks same as normal brightness) + ESC [ 22 m # normal brightness + + # FOREGROUND: + ESC [ 30 m # black + ESC [ 31 m # red + ESC [ 32 m # green + ESC [ 33 m # yellow + ESC [ 34 m # blue + ESC [ 35 m # magenta + ESC [ 36 m # cyan + ESC [ 37 m # white + ESC [ 39 m # reset + + # BACKGROUND + ESC [ 40 m # black + ESC [ 41 m # red + ESC [ 42 m # green + ESC [ 43 m # yellow + ESC [ 44 m # blue + ESC [ 45 m # magenta + ESC [ 46 m # cyan + ESC [ 47 m # white + ESC [ 49 m # reset + + # cursor positioning + ESC [ y;x H # position cursor at x across, y down + ESC [ y;x f # position cursor at x across, y down + ESC [ n A # move cursor n lines up + ESC [ n B # move cursor n lines down + ESC [ n C # move cursor n characters forward + ESC [ n D # move cursor n characters backward + + # clear the screen + ESC [ mode J # clear the screen + + # clear the line + ESC [ mode K # clear the line + +Multiple numeric params to the ``'m'`` command can be combined into a single +sequence:: + + ESC [ 36 ; 45 ; 1 m # bright cyan text on magenta background + +All other ANSI sequences of the form ``ESC [ ; ... `` +are silently stripped from the output on Windows. + +Any other form of ANSI sequence, such as single-character codes or alternative +initial characters, are not recognised or stripped. It would be cool to add +them though. Let me know if it would be useful for you, via the Issues on +GitHub. + + +Development +=========== + +Help and fixes welcome! + +Running tests requires: + +- Michael Foord's ``mock`` module to be installed. +- Tests are written using 2010-era updates to ``unittest`` + +To run tests:: + + python -m unittest discover -p *_test.py + +This, like a few other handy commands, is captured in a ``Makefile``. + +If you use nose to run the tests, you must pass the ``-s`` flag; otherwise, +``nosetests`` applies its own proxy to ``stdout``, which confuses the unit +tests. + + +Professional support +==================== + +.. |tideliftlogo| image:: https://cdn2.hubspot.net/hubfs/4008838/website/logos/logos_for_download/Tidelift_primary-shorthand-logo.png + :alt: Tidelift + :target: https://tidelift.com/subscription/pkg/pypi-colorama?utm_source=pypi-colorama&utm_medium=referral&utm_campaign=readme + +.. list-table:: + :widths: 10 100 + + * - |tideliftlogo| + - Professional support for colorama is available as part of the + `Tidelift Subscription`_. + Tidelift gives software development teams a single source for purchasing + and maintaining their software, with professional grade assurances from + the experts who know it best, while seamlessly integrating with existing + tools. + +.. _Tidelift Subscription: https://tidelift.com/subscription/pkg/pypi-colorama?utm_source=pypi-colorama&utm_medium=referral&utm_campaign=readme + + +Thanks +====== +* Marc Schlaich (schlamar) for a ``setup.py`` fix for Python2.5. +* Marc Abramowitz, reported & fixed a crash on exit with closed ``stdout``, + providing a solution to issue #7's setuptools/distutils debate, + and other fixes. +* User 'eryksun', for guidance on correctly instantiating ``ctypes.windll``. +* Matthew McCormick for politely pointing out a longstanding crash on non-Win. +* Ben Hoyt, for a magnificent fix under 64-bit Windows. +* Jesse at Empty Square for submitting a fix for examples in the README. +* User 'jamessp', an observant documentation fix for cursor positioning. +* User 'vaal1239', Dave Mckee & Lackner Kristof for a tiny but much-needed Win7 + fix. +* Julien Stuyck, for wisely suggesting Python3 compatible updates to README. +* Daniel Griffith for multiple fabulous patches. +* Oscar Lesta for a valuable fix to stop ANSI chars being sent to non-tty + output. +* Roger Binns, for many suggestions, valuable feedback, & bug reports. +* Tim Golden for thought and much appreciated feedback on the initial idea. +* User 'Zearin' for updates to the README file. +* John Szakmeister for adding support for light colors +* Charles Merriam for adding documentation to demos +* Jurko for a fix on 64-bit Windows CPython2.5 w/o ctypes +* Florian Bruhin for a fix when stdout or stderr are None +* Thomas Weininger for fixing ValueError on Windows +* Remi Rampin for better Github integration and fixes to the README file +* Simeon Visser for closing a file handle using 'with' and updating classifiers + to include Python 3.3 and 3.4 +* Andy Neff for fixing RESET of LIGHT_EX colors. +* Jonathan Hartley for the initial idea and implementation. + + diff --git a/venv/Lib/site-packages/colorama-0.4.3.dist-info/RECORD b/venv/Lib/site-packages/colorama-0.4.3.dist-info/RECORD new file mode 100644 index 0000000..64d8939 --- /dev/null +++ b/venv/Lib/site-packages/colorama-0.4.3.dist-info/RECORD @@ -0,0 +1,18 @@ +colorama-0.4.3.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +colorama-0.4.3.dist-info/LICENSE.txt,sha256=ysNcAmhuXQSlpxQL-zs25zrtSWZW6JEQLkKIhteTAxg,1491 +colorama-0.4.3.dist-info/METADATA,sha256=-ovqULHfBHs9pV2e_Ua8-w2VSVLno-6x36SXSTsWvSc,14432 +colorama-0.4.3.dist-info/RECORD,, +colorama-0.4.3.dist-info/WHEEL,sha256=8zNYZbwQSXoB9IfXOjPfeNwvAsALAjffgk27FqvCWbo,110 +colorama-0.4.3.dist-info/top_level.txt,sha256=_Kx6-Cni2BT1PEATPhrSRxo0d7kSgfBbHf5o7IF1ABw,9 +colorama/__init__.py,sha256=DqjXH9URVP3IJwmMt7peYw50ns1RNAymIB9-XdPEFV8,239 +colorama/__pycache__/__init__.cpython-37.pyc,, +colorama/__pycache__/ansi.cpython-37.pyc,, +colorama/__pycache__/ansitowin32.cpython-37.pyc,, +colorama/__pycache__/initialise.cpython-37.pyc,, +colorama/__pycache__/win32.cpython-37.pyc,, +colorama/__pycache__/winterm.cpython-37.pyc,, +colorama/ansi.py,sha256=Fi0un-QLqRm-v7o_nKiOqyC8PapBJK7DLV_q9LKtTO0,2524 +colorama/ansitowin32.py,sha256=u8QaqdqS_xYSfNkPM1eRJLHz6JMWPodaJaP0mxgHCDc,10462 +colorama/initialise.py,sha256=PprovDNxMTrvoNHFcL2NZjpH2XzDc8BLxLxiErfUl4k,1915 +colorama/win32.py,sha256=bJ8Il9jwaBN5BJ8bmN6FoYZ1QYuMKv2j8fGrXh7TJjw,5404 +colorama/winterm.py,sha256=2y_2b7Zsv34feAsP67mLOVc-Bgq51mdYGo571VprlrM,6438 diff --git a/venv/Lib/site-packages/colorama-0.4.3.dist-info/WHEEL b/venv/Lib/site-packages/colorama-0.4.3.dist-info/WHEEL new file mode 100644 index 0000000..8b701e9 --- /dev/null +++ b/venv/Lib/site-packages/colorama-0.4.3.dist-info/WHEEL @@ -0,0 +1,6 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.33.6) +Root-Is-Purelib: true +Tag: py2-none-any +Tag: py3-none-any + diff --git a/venv/Lib/site-packages/colorama-0.4.3.dist-info/top_level.txt b/venv/Lib/site-packages/colorama-0.4.3.dist-info/top_level.txt new file mode 100644 index 0000000..3fcfb51 --- /dev/null +++ b/venv/Lib/site-packages/colorama-0.4.3.dist-info/top_level.txt @@ -0,0 +1 @@ +colorama diff --git a/venv/Lib/site-packages/colorama/__init__.py b/venv/Lib/site-packages/colorama/__init__.py new file mode 100644 index 0000000..34c263c --- /dev/null +++ b/venv/Lib/site-packages/colorama/__init__.py @@ -0,0 +1,6 @@ +# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file. +from .initialise import init, deinit, reinit, colorama_text +from .ansi import Fore, Back, Style, Cursor +from .ansitowin32 import AnsiToWin32 + +__version__ = '0.4.3' diff --git a/venv/Lib/site-packages/colorama/__pycache__/__init__.cpython-37.pyc b/venv/Lib/site-packages/colorama/__pycache__/__init__.cpython-37.pyc new file mode 100644 index 0000000..270deaf Binary files /dev/null and b/venv/Lib/site-packages/colorama/__pycache__/__init__.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/colorama/__pycache__/ansi.cpython-37.pyc b/venv/Lib/site-packages/colorama/__pycache__/ansi.cpython-37.pyc new file mode 100644 index 0000000..c0942e2 Binary files /dev/null and b/venv/Lib/site-packages/colorama/__pycache__/ansi.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/colorama/__pycache__/ansitowin32.cpython-37.pyc b/venv/Lib/site-packages/colorama/__pycache__/ansitowin32.cpython-37.pyc new file mode 100644 index 0000000..152004e Binary files /dev/null and b/venv/Lib/site-packages/colorama/__pycache__/ansitowin32.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/colorama/__pycache__/initialise.cpython-37.pyc b/venv/Lib/site-packages/colorama/__pycache__/initialise.cpython-37.pyc new file mode 100644 index 0000000..671073a Binary files /dev/null and b/venv/Lib/site-packages/colorama/__pycache__/initialise.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/colorama/__pycache__/win32.cpython-37.pyc b/venv/Lib/site-packages/colorama/__pycache__/win32.cpython-37.pyc new file mode 100644 index 0000000..2982108 Binary files /dev/null and b/venv/Lib/site-packages/colorama/__pycache__/win32.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/colorama/__pycache__/winterm.cpython-37.pyc b/venv/Lib/site-packages/colorama/__pycache__/winterm.cpython-37.pyc new file mode 100644 index 0000000..1ebf75c Binary files /dev/null and b/venv/Lib/site-packages/colorama/__pycache__/winterm.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/colorama/ansi.py b/venv/Lib/site-packages/colorama/ansi.py new file mode 100644 index 0000000..7877658 --- /dev/null +++ b/venv/Lib/site-packages/colorama/ansi.py @@ -0,0 +1,102 @@ +# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file. +''' +This module generates ANSI character codes to printing colors to terminals. +See: http://en.wikipedia.org/wiki/ANSI_escape_code +''' + +CSI = '\033[' +OSC = '\033]' +BEL = '\007' + + +def code_to_chars(code): + return CSI + str(code) + 'm' + +def set_title(title): + return OSC + '2;' + title + BEL + +def clear_screen(mode=2): + return CSI + str(mode) + 'J' + +def clear_line(mode=2): + return CSI + str(mode) + 'K' + + +class AnsiCodes(object): + def __init__(self): + # the subclasses declare class attributes which are numbers. + # Upon instantiation we define instance attributes, which are the same + # as the class attributes but wrapped with the ANSI escape sequence + for name in dir(self): + if not name.startswith('_'): + value = getattr(self, name) + setattr(self, name, code_to_chars(value)) + + +class AnsiCursor(object): + def UP(self, n=1): + return CSI + str(n) + 'A' + def DOWN(self, n=1): + return CSI + str(n) + 'B' + def FORWARD(self, n=1): + return CSI + str(n) + 'C' + def BACK(self, n=1): + return CSI + str(n) + 'D' + def POS(self, x=1, y=1): + return CSI + str(y) + ';' + str(x) + 'H' + + +class AnsiFore(AnsiCodes): + BLACK = 30 + RED = 31 + GREEN = 32 + YELLOW = 33 + BLUE = 34 + MAGENTA = 35 + CYAN = 36 + WHITE = 37 + RESET = 39 + + # These are fairly well supported, but not part of the standard. + LIGHTBLACK_EX = 90 + LIGHTRED_EX = 91 + LIGHTGREEN_EX = 92 + LIGHTYELLOW_EX = 93 + LIGHTBLUE_EX = 94 + LIGHTMAGENTA_EX = 95 + LIGHTCYAN_EX = 96 + LIGHTWHITE_EX = 97 + + +class AnsiBack(AnsiCodes): + BLACK = 40 + RED = 41 + GREEN = 42 + YELLOW = 43 + BLUE = 44 + MAGENTA = 45 + CYAN = 46 + WHITE = 47 + RESET = 49 + + # These are fairly well supported, but not part of the standard. + LIGHTBLACK_EX = 100 + LIGHTRED_EX = 101 + LIGHTGREEN_EX = 102 + LIGHTYELLOW_EX = 103 + LIGHTBLUE_EX = 104 + LIGHTMAGENTA_EX = 105 + LIGHTCYAN_EX = 106 + LIGHTWHITE_EX = 107 + + +class AnsiStyle(AnsiCodes): + BRIGHT = 1 + DIM = 2 + NORMAL = 22 + RESET_ALL = 0 + +Fore = AnsiFore() +Back = AnsiBack() +Style = AnsiStyle() +Cursor = AnsiCursor() diff --git a/venv/Lib/site-packages/colorama/ansitowin32.py b/venv/Lib/site-packages/colorama/ansitowin32.py new file mode 100644 index 0000000..359c92b --- /dev/null +++ b/venv/Lib/site-packages/colorama/ansitowin32.py @@ -0,0 +1,257 @@ +# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file. +import re +import sys +import os + +from .ansi import AnsiFore, AnsiBack, AnsiStyle, Style +from .winterm import WinTerm, WinColor, WinStyle +from .win32 import windll, winapi_test + + +winterm = None +if windll is not None: + winterm = WinTerm() + + +class StreamWrapper(object): + ''' + Wraps a stream (such as stdout), acting as a transparent proxy for all + attribute access apart from method 'write()', which is delegated to our + Converter instance. + ''' + def __init__(self, wrapped, converter): + # double-underscore everything to prevent clashes with names of + # attributes on the wrapped stream object. + self.__wrapped = wrapped + self.__convertor = converter + + def __getattr__(self, name): + return getattr(self.__wrapped, name) + + def __enter__(self, *args, **kwargs): + # special method lookup bypasses __getattr__/__getattribute__, see + # https://stackoverflow.com/questions/12632894/why-doesnt-getattr-work-with-exit + # thus, contextlib magic methods are not proxied via __getattr__ + return self.__wrapped.__enter__(*args, **kwargs) + + def __exit__(self, *args, **kwargs): + return self.__wrapped.__exit__(*args, **kwargs) + + def write(self, text): + self.__convertor.write(text) + + def isatty(self): + stream = self.__wrapped + if 'PYCHARM_HOSTED' in os.environ: + if stream is not None and (stream is sys.__stdout__ or stream is sys.__stderr__): + return True + try: + stream_isatty = stream.isatty + except AttributeError: + return False + else: + return stream_isatty() + + @property + def closed(self): + stream = self.__wrapped + try: + return stream.closed + except AttributeError: + return True + + +class AnsiToWin32(object): + ''' + Implements a 'write()' method which, on Windows, will strip ANSI character + sequences from the text, and if outputting to a tty, will convert them into + win32 function calls. + ''' + ANSI_CSI_RE = re.compile('\001?\033\\[((?:\\d|;)*)([a-zA-Z])\002?') # Control Sequence Introducer + ANSI_OSC_RE = re.compile('\001?\033\\]((?:.|;)*?)(\x07)\002?') # Operating System Command + + def __init__(self, wrapped, convert=None, strip=None, autoreset=False): + # The wrapped stream (normally sys.stdout or sys.stderr) + self.wrapped = wrapped + + # should we reset colors to defaults after every .write() + self.autoreset = autoreset + + # create the proxy wrapping our output stream + self.stream = StreamWrapper(wrapped, self) + + on_windows = os.name == 'nt' + # We test if the WinAPI works, because even if we are on Windows + # we may be using a terminal that doesn't support the WinAPI + # (e.g. Cygwin Terminal). In this case it's up to the terminal + # to support the ANSI codes. + conversion_supported = on_windows and winapi_test() + + # should we strip ANSI sequences from our output? + if strip is None: + strip = conversion_supported or (not self.stream.closed and not self.stream.isatty()) + self.strip = strip + + # should we should convert ANSI sequences into win32 calls? + if convert is None: + convert = conversion_supported and not self.stream.closed and self.stream.isatty() + self.convert = convert + + # dict of ansi codes to win32 functions and parameters + self.win32_calls = self.get_win32_calls() + + # are we wrapping stderr? + self.on_stderr = self.wrapped is sys.stderr + + def should_wrap(self): + ''' + True if this class is actually needed. If false, then the output + stream will not be affected, nor will win32 calls be issued, so + wrapping stdout is not actually required. This will generally be + False on non-Windows platforms, unless optional functionality like + autoreset has been requested using kwargs to init() + ''' + return self.convert or self.strip or self.autoreset + + def get_win32_calls(self): + if self.convert and winterm: + return { + AnsiStyle.RESET_ALL: (winterm.reset_all, ), + AnsiStyle.BRIGHT: (winterm.style, WinStyle.BRIGHT), + AnsiStyle.DIM: (winterm.style, WinStyle.NORMAL), + AnsiStyle.NORMAL: (winterm.style, WinStyle.NORMAL), + AnsiFore.BLACK: (winterm.fore, WinColor.BLACK), + AnsiFore.RED: (winterm.fore, WinColor.RED), + AnsiFore.GREEN: (winterm.fore, WinColor.GREEN), + AnsiFore.YELLOW: (winterm.fore, WinColor.YELLOW), + AnsiFore.BLUE: (winterm.fore, WinColor.BLUE), + AnsiFore.MAGENTA: (winterm.fore, WinColor.MAGENTA), + AnsiFore.CYAN: (winterm.fore, WinColor.CYAN), + AnsiFore.WHITE: (winterm.fore, WinColor.GREY), + AnsiFore.RESET: (winterm.fore, ), + AnsiFore.LIGHTBLACK_EX: (winterm.fore, WinColor.BLACK, True), + AnsiFore.LIGHTRED_EX: (winterm.fore, WinColor.RED, True), + AnsiFore.LIGHTGREEN_EX: (winterm.fore, WinColor.GREEN, True), + AnsiFore.LIGHTYELLOW_EX: (winterm.fore, WinColor.YELLOW, True), + AnsiFore.LIGHTBLUE_EX: (winterm.fore, WinColor.BLUE, True), + AnsiFore.LIGHTMAGENTA_EX: (winterm.fore, WinColor.MAGENTA, True), + AnsiFore.LIGHTCYAN_EX: (winterm.fore, WinColor.CYAN, True), + AnsiFore.LIGHTWHITE_EX: (winterm.fore, WinColor.GREY, True), + AnsiBack.BLACK: (winterm.back, WinColor.BLACK), + AnsiBack.RED: (winterm.back, WinColor.RED), + AnsiBack.GREEN: (winterm.back, WinColor.GREEN), + AnsiBack.YELLOW: (winterm.back, WinColor.YELLOW), + AnsiBack.BLUE: (winterm.back, WinColor.BLUE), + AnsiBack.MAGENTA: (winterm.back, WinColor.MAGENTA), + AnsiBack.CYAN: (winterm.back, WinColor.CYAN), + AnsiBack.WHITE: (winterm.back, WinColor.GREY), + AnsiBack.RESET: (winterm.back, ), + AnsiBack.LIGHTBLACK_EX: (winterm.back, WinColor.BLACK, True), + AnsiBack.LIGHTRED_EX: (winterm.back, WinColor.RED, True), + AnsiBack.LIGHTGREEN_EX: (winterm.back, WinColor.GREEN, True), + AnsiBack.LIGHTYELLOW_EX: (winterm.back, WinColor.YELLOW, True), + AnsiBack.LIGHTBLUE_EX: (winterm.back, WinColor.BLUE, True), + AnsiBack.LIGHTMAGENTA_EX: (winterm.back, WinColor.MAGENTA, True), + AnsiBack.LIGHTCYAN_EX: (winterm.back, WinColor.CYAN, True), + AnsiBack.LIGHTWHITE_EX: (winterm.back, WinColor.GREY, True), + } + return dict() + + def write(self, text): + if self.strip or self.convert: + self.write_and_convert(text) + else: + self.wrapped.write(text) + self.wrapped.flush() + if self.autoreset: + self.reset_all() + + + def reset_all(self): + if self.convert: + self.call_win32('m', (0,)) + elif not self.strip and not self.stream.closed: + self.wrapped.write(Style.RESET_ALL) + + + def write_and_convert(self, text): + ''' + Write the given text to our wrapped stream, stripping any ANSI + sequences from the text, and optionally converting them into win32 + calls. + ''' + cursor = 0 + text = self.convert_osc(text) + for match in self.ANSI_CSI_RE.finditer(text): + start, end = match.span() + self.write_plain_text(text, cursor, start) + self.convert_ansi(*match.groups()) + cursor = end + self.write_plain_text(text, cursor, len(text)) + + + def write_plain_text(self, text, start, end): + if start < end: + self.wrapped.write(text[start:end]) + self.wrapped.flush() + + + def convert_ansi(self, paramstring, command): + if self.convert: + params = self.extract_params(command, paramstring) + self.call_win32(command, params) + + + def extract_params(self, command, paramstring): + if command in 'Hf': + params = tuple(int(p) if len(p) != 0 else 1 for p in paramstring.split(';')) + while len(params) < 2: + # defaults: + params = params + (1,) + else: + params = tuple(int(p) for p in paramstring.split(';') if len(p) != 0) + if len(params) == 0: + # defaults: + if command in 'JKm': + params = (0,) + elif command in 'ABCD': + params = (1,) + + return params + + + def call_win32(self, command, params): + if command == 'm': + for param in params: + if param in self.win32_calls: + func_args = self.win32_calls[param] + func = func_args[0] + args = func_args[1:] + kwargs = dict(on_stderr=self.on_stderr) + func(*args, **kwargs) + elif command in 'J': + winterm.erase_screen(params[0], on_stderr=self.on_stderr) + elif command in 'K': + winterm.erase_line(params[0], on_stderr=self.on_stderr) + elif command in 'Hf': # cursor position - absolute + winterm.set_cursor_position(params, on_stderr=self.on_stderr) + elif command in 'ABCD': # cursor position - relative + n = params[0] + # A - up, B - down, C - forward, D - back + x, y = {'A': (0, -n), 'B': (0, n), 'C': (n, 0), 'D': (-n, 0)}[command] + winterm.cursor_adjust(x, y, on_stderr=self.on_stderr) + + + def convert_osc(self, text): + for match in self.ANSI_OSC_RE.finditer(text): + start, end = match.span() + text = text[:start] + text[end:] + paramstring, command = match.groups() + if command in '\x07': # \x07 = BEL + params = paramstring.split(";") + # 0 - change title and icon (we will only change title) + # 1 - change icon (we don't support this) + # 2 - change title + if params[0] in '02': + winterm.set_title(params[1]) + return text diff --git a/venv/Lib/site-packages/colorama/initialise.py b/venv/Lib/site-packages/colorama/initialise.py new file mode 100644 index 0000000..430d066 --- /dev/null +++ b/venv/Lib/site-packages/colorama/initialise.py @@ -0,0 +1,80 @@ +# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file. +import atexit +import contextlib +import sys + +from .ansitowin32 import AnsiToWin32 + + +orig_stdout = None +orig_stderr = None + +wrapped_stdout = None +wrapped_stderr = None + +atexit_done = False + + +def reset_all(): + if AnsiToWin32 is not None: # Issue #74: objects might become None at exit + AnsiToWin32(orig_stdout).reset_all() + + +def init(autoreset=False, convert=None, strip=None, wrap=True): + + if not wrap and any([autoreset, convert, strip]): + raise ValueError('wrap=False conflicts with any other arg=True') + + global wrapped_stdout, wrapped_stderr + global orig_stdout, orig_stderr + + orig_stdout = sys.stdout + orig_stderr = sys.stderr + + if sys.stdout is None: + wrapped_stdout = None + else: + sys.stdout = wrapped_stdout = \ + wrap_stream(orig_stdout, convert, strip, autoreset, wrap) + if sys.stderr is None: + wrapped_stderr = None + else: + sys.stderr = wrapped_stderr = \ + wrap_stream(orig_stderr, convert, strip, autoreset, wrap) + + global atexit_done + if not atexit_done: + atexit.register(reset_all) + atexit_done = True + + +def deinit(): + if orig_stdout is not None: + sys.stdout = orig_stdout + if orig_stderr is not None: + sys.stderr = orig_stderr + + +@contextlib.contextmanager +def colorama_text(*args, **kwargs): + init(*args, **kwargs) + try: + yield + finally: + deinit() + + +def reinit(): + if wrapped_stdout is not None: + sys.stdout = wrapped_stdout + if wrapped_stderr is not None: + sys.stderr = wrapped_stderr + + +def wrap_stream(stream, convert, strip, autoreset, wrap): + if wrap: + wrapper = AnsiToWin32(stream, + convert=convert, strip=strip, autoreset=autoreset) + if wrapper.should_wrap(): + stream = wrapper.stream + return stream diff --git a/venv/Lib/site-packages/colorama/win32.py b/venv/Lib/site-packages/colorama/win32.py new file mode 100644 index 0000000..c2d8360 --- /dev/null +++ b/venv/Lib/site-packages/colorama/win32.py @@ -0,0 +1,152 @@ +# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file. + +# from winbase.h +STDOUT = -11 +STDERR = -12 + +try: + import ctypes + from ctypes import LibraryLoader + windll = LibraryLoader(ctypes.WinDLL) + from ctypes import wintypes +except (AttributeError, ImportError): + windll = None + SetConsoleTextAttribute = lambda *_: None + winapi_test = lambda *_: None +else: + from ctypes import byref, Structure, c_char, POINTER + + COORD = wintypes._COORD + + class CONSOLE_SCREEN_BUFFER_INFO(Structure): + """struct in wincon.h.""" + _fields_ = [ + ("dwSize", COORD), + ("dwCursorPosition", COORD), + ("wAttributes", wintypes.WORD), + ("srWindow", wintypes.SMALL_RECT), + ("dwMaximumWindowSize", COORD), + ] + def __str__(self): + return '(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d)' % ( + self.dwSize.Y, self.dwSize.X + , self.dwCursorPosition.Y, self.dwCursorPosition.X + , self.wAttributes + , self.srWindow.Top, self.srWindow.Left, self.srWindow.Bottom, self.srWindow.Right + , self.dwMaximumWindowSize.Y, self.dwMaximumWindowSize.X + ) + + _GetStdHandle = windll.kernel32.GetStdHandle + _GetStdHandle.argtypes = [ + wintypes.DWORD, + ] + _GetStdHandle.restype = wintypes.HANDLE + + _GetConsoleScreenBufferInfo = windll.kernel32.GetConsoleScreenBufferInfo + _GetConsoleScreenBufferInfo.argtypes = [ + wintypes.HANDLE, + POINTER(CONSOLE_SCREEN_BUFFER_INFO), + ] + _GetConsoleScreenBufferInfo.restype = wintypes.BOOL + + _SetConsoleTextAttribute = windll.kernel32.SetConsoleTextAttribute + _SetConsoleTextAttribute.argtypes = [ + wintypes.HANDLE, + wintypes.WORD, + ] + _SetConsoleTextAttribute.restype = wintypes.BOOL + + _SetConsoleCursorPosition = windll.kernel32.SetConsoleCursorPosition + _SetConsoleCursorPosition.argtypes = [ + wintypes.HANDLE, + COORD, + ] + _SetConsoleCursorPosition.restype = wintypes.BOOL + + _FillConsoleOutputCharacterA = windll.kernel32.FillConsoleOutputCharacterA + _FillConsoleOutputCharacterA.argtypes = [ + wintypes.HANDLE, + c_char, + wintypes.DWORD, + COORD, + POINTER(wintypes.DWORD), + ] + _FillConsoleOutputCharacterA.restype = wintypes.BOOL + + _FillConsoleOutputAttribute = windll.kernel32.FillConsoleOutputAttribute + _FillConsoleOutputAttribute.argtypes = [ + wintypes.HANDLE, + wintypes.WORD, + wintypes.DWORD, + COORD, + POINTER(wintypes.DWORD), + ] + _FillConsoleOutputAttribute.restype = wintypes.BOOL + + _SetConsoleTitleW = windll.kernel32.SetConsoleTitleW + _SetConsoleTitleW.argtypes = [ + wintypes.LPCWSTR + ] + _SetConsoleTitleW.restype = wintypes.BOOL + + def _winapi_test(handle): + csbi = CONSOLE_SCREEN_BUFFER_INFO() + success = _GetConsoleScreenBufferInfo( + handle, byref(csbi)) + return bool(success) + + def winapi_test(): + return any(_winapi_test(h) for h in + (_GetStdHandle(STDOUT), _GetStdHandle(STDERR))) + + def GetConsoleScreenBufferInfo(stream_id=STDOUT): + handle = _GetStdHandle(stream_id) + csbi = CONSOLE_SCREEN_BUFFER_INFO() + success = _GetConsoleScreenBufferInfo( + handle, byref(csbi)) + return csbi + + def SetConsoleTextAttribute(stream_id, attrs): + handle = _GetStdHandle(stream_id) + return _SetConsoleTextAttribute(handle, attrs) + + def SetConsoleCursorPosition(stream_id, position, adjust=True): + position = COORD(*position) + # If the position is out of range, do nothing. + if position.Y <= 0 or position.X <= 0: + return + # Adjust for Windows' SetConsoleCursorPosition: + # 1. being 0-based, while ANSI is 1-based. + # 2. expecting (x,y), while ANSI uses (y,x). + adjusted_position = COORD(position.Y - 1, position.X - 1) + if adjust: + # Adjust for viewport's scroll position + sr = GetConsoleScreenBufferInfo(STDOUT).srWindow + adjusted_position.Y += sr.Top + adjusted_position.X += sr.Left + # Resume normal processing + handle = _GetStdHandle(stream_id) + return _SetConsoleCursorPosition(handle, adjusted_position) + + def FillConsoleOutputCharacter(stream_id, char, length, start): + handle = _GetStdHandle(stream_id) + char = c_char(char.encode()) + length = wintypes.DWORD(length) + num_written = wintypes.DWORD(0) + # Note that this is hard-coded for ANSI (vs wide) bytes. + success = _FillConsoleOutputCharacterA( + handle, char, length, start, byref(num_written)) + return num_written.value + + def FillConsoleOutputAttribute(stream_id, attr, length, start): + ''' FillConsoleOutputAttribute( hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten )''' + handle = _GetStdHandle(stream_id) + attribute = wintypes.WORD(attr) + length = wintypes.DWORD(length) + num_written = wintypes.DWORD(0) + # Note that this is hard-coded for ANSI (vs wide) bytes. + return _FillConsoleOutputAttribute( + handle, attribute, length, start, byref(num_written)) + + def SetConsoleTitle(title): + return _SetConsoleTitleW(title) diff --git a/venv/Lib/site-packages/colorama/winterm.py b/venv/Lib/site-packages/colorama/winterm.py new file mode 100644 index 0000000..0fdb4ec --- /dev/null +++ b/venv/Lib/site-packages/colorama/winterm.py @@ -0,0 +1,169 @@ +# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file. +from . import win32 + + +# from wincon.h +class WinColor(object): + BLACK = 0 + BLUE = 1 + GREEN = 2 + CYAN = 3 + RED = 4 + MAGENTA = 5 + YELLOW = 6 + GREY = 7 + +# from wincon.h +class WinStyle(object): + NORMAL = 0x00 # dim text, dim background + BRIGHT = 0x08 # bright text, dim background + BRIGHT_BACKGROUND = 0x80 # dim text, bright background + +class WinTerm(object): + + def __init__(self): + self._default = win32.GetConsoleScreenBufferInfo(win32.STDOUT).wAttributes + self.set_attrs(self._default) + self._default_fore = self._fore + self._default_back = self._back + self._default_style = self._style + # In order to emulate LIGHT_EX in windows, we borrow the BRIGHT style. + # So that LIGHT_EX colors and BRIGHT style do not clobber each other, + # we track them separately, since LIGHT_EX is overwritten by Fore/Back + # and BRIGHT is overwritten by Style codes. + self._light = 0 + + def get_attrs(self): + return self._fore + self._back * 16 + (self._style | self._light) + + def set_attrs(self, value): + self._fore = value & 7 + self._back = (value >> 4) & 7 + self._style = value & (WinStyle.BRIGHT | WinStyle.BRIGHT_BACKGROUND) + + def reset_all(self, on_stderr=None): + self.set_attrs(self._default) + self.set_console(attrs=self._default) + self._light = 0 + + def fore(self, fore=None, light=False, on_stderr=False): + if fore is None: + fore = self._default_fore + self._fore = fore + # Emulate LIGHT_EX with BRIGHT Style + if light: + self._light |= WinStyle.BRIGHT + else: + self._light &= ~WinStyle.BRIGHT + self.set_console(on_stderr=on_stderr) + + def back(self, back=None, light=False, on_stderr=False): + if back is None: + back = self._default_back + self._back = back + # Emulate LIGHT_EX with BRIGHT_BACKGROUND Style + if light: + self._light |= WinStyle.BRIGHT_BACKGROUND + else: + self._light &= ~WinStyle.BRIGHT_BACKGROUND + self.set_console(on_stderr=on_stderr) + + def style(self, style=None, on_stderr=False): + if style is None: + style = self._default_style + self._style = style + self.set_console(on_stderr=on_stderr) + + def set_console(self, attrs=None, on_stderr=False): + if attrs is None: + attrs = self.get_attrs() + handle = win32.STDOUT + if on_stderr: + handle = win32.STDERR + win32.SetConsoleTextAttribute(handle, attrs) + + def get_position(self, handle): + position = win32.GetConsoleScreenBufferInfo(handle).dwCursorPosition + # Because Windows coordinates are 0-based, + # and win32.SetConsoleCursorPosition expects 1-based. + position.X += 1 + position.Y += 1 + return position + + def set_cursor_position(self, position=None, on_stderr=False): + if position is None: + # I'm not currently tracking the position, so there is no default. + # position = self.get_position() + return + handle = win32.STDOUT + if on_stderr: + handle = win32.STDERR + win32.SetConsoleCursorPosition(handle, position) + + def cursor_adjust(self, x, y, on_stderr=False): + handle = win32.STDOUT + if on_stderr: + handle = win32.STDERR + position = self.get_position(handle) + adjusted_position = (position.Y + y, position.X + x) + win32.SetConsoleCursorPosition(handle, adjusted_position, adjust=False) + + def erase_screen(self, mode=0, on_stderr=False): + # 0 should clear from the cursor to the end of the screen. + # 1 should clear from the cursor to the beginning of the screen. + # 2 should clear the entire screen, and move cursor to (1,1) + handle = win32.STDOUT + if on_stderr: + handle = win32.STDERR + csbi = win32.GetConsoleScreenBufferInfo(handle) + # get the number of character cells in the current buffer + cells_in_screen = csbi.dwSize.X * csbi.dwSize.Y + # get number of character cells before current cursor position + cells_before_cursor = csbi.dwSize.X * csbi.dwCursorPosition.Y + csbi.dwCursorPosition.X + if mode == 0: + from_coord = csbi.dwCursorPosition + cells_to_erase = cells_in_screen - cells_before_cursor + elif mode == 1: + from_coord = win32.COORD(0, 0) + cells_to_erase = cells_before_cursor + elif mode == 2: + from_coord = win32.COORD(0, 0) + cells_to_erase = cells_in_screen + else: + # invalid mode + return + # fill the entire screen with blanks + win32.FillConsoleOutputCharacter(handle, ' ', cells_to_erase, from_coord) + # now set the buffer's attributes accordingly + win32.FillConsoleOutputAttribute(handle, self.get_attrs(), cells_to_erase, from_coord) + if mode == 2: + # put the cursor where needed + win32.SetConsoleCursorPosition(handle, (1, 1)) + + def erase_line(self, mode=0, on_stderr=False): + # 0 should clear from the cursor to the end of the line. + # 1 should clear from the cursor to the beginning of the line. + # 2 should clear the entire line. + handle = win32.STDOUT + if on_stderr: + handle = win32.STDERR + csbi = win32.GetConsoleScreenBufferInfo(handle) + if mode == 0: + from_coord = csbi.dwCursorPosition + cells_to_erase = csbi.dwSize.X - csbi.dwCursorPosition.X + elif mode == 1: + from_coord = win32.COORD(0, csbi.dwCursorPosition.Y) + cells_to_erase = csbi.dwCursorPosition.X + elif mode == 2: + from_coord = win32.COORD(0, csbi.dwCursorPosition.Y) + cells_to_erase = csbi.dwSize.X + else: + # invalid mode + return + # fill the entire screen with blanks + win32.FillConsoleOutputCharacter(handle, ' ', cells_to_erase, from_coord) + # now set the buffer's attributes accordingly + win32.FillConsoleOutputAttribute(handle, self.get_attrs(), cells_to_erase, from_coord) + + def set_title(self, title): + win32.SetConsoleTitle(title) diff --git a/venv/Lib/site-packages/isort-4.3.21.dist-info/INSTALLER b/venv/Lib/site-packages/isort-4.3.21.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/venv/Lib/site-packages/isort-4.3.21.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/venv/Lib/site-packages/isort-4.3.21.dist-info/LICENSE b/venv/Lib/site-packages/isort-4.3.21.dist-info/LICENSE new file mode 100644 index 0000000..b5083a5 --- /dev/null +++ b/venv/Lib/site-packages/isort-4.3.21.dist-info/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2013 Timothy Edmund Crosley + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/venv/Lib/site-packages/isort-4.3.21.dist-info/METADATA b/venv/Lib/site-packages/isort-4.3.21.dist-info/METADATA new file mode 100644 index 0000000..fbc7f6c --- /dev/null +++ b/venv/Lib/site-packages/isort-4.3.21.dist-info/METADATA @@ -0,0 +1,697 @@ +Metadata-Version: 2.1 +Name: isort +Version: 4.3.21 +Summary: A Python utility / library to sort Python imports. +Home-page: https://github.com/timothycrosley/isort +Author: Timothy Crosley +Author-email: timothy.crosley@gmail.com +License: MIT +Keywords: Refactor,Python,Python2,Python3,Refactoring,Imports,Sort,Clean +Platform: UNKNOWN +Classifier: Development Status :: 6 - Mature +Classifier: Intended Audience :: Developers +Classifier: Natural Language :: English +Classifier: Environment :: Console +Classifier: License :: OSI Approved :: MIT License +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.4 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Classifier: Topic :: Software Development :: Libraries +Classifier: Topic :: Utilities +Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.* +Requires-Dist: futures ; python_version < "3.2" +Requires-Dist: backports.functools-lru-cache ; python_version < "3.2" +Provides-Extra: pipfile +Requires-Dist: pipreqs ; extra == 'pipfile' +Requires-Dist: requirementslib ; extra == 'pipfile' +Provides-Extra: pyproject +Requires-Dist: toml ; extra == 'pyproject' +Provides-Extra: requirements +Requires-Dist: pipreqs ; extra == 'requirements' +Requires-Dist: pip-api ; extra == 'requirements' +Provides-Extra: xdg_home +Requires-Dist: appdirs (>=1.4.0) ; extra == 'xdg_home' + +.. image:: https://raw.github.com/timothycrosley/isort/master/logo.png + :alt: isort + +######## + +.. image:: https://badge.fury.io/py/isort.svg + :target: https://badge.fury.io/py/isort + :alt: PyPI version + +.. image:: https://travis-ci.org/timothycrosley/isort.svg?branch=master + :target: https://travis-ci.org/timothycrosley/isort + :alt: Build Status + + +.. image:: https://coveralls.io/repos/timothycrosley/isort/badge.svg?branch=release%2F2.6.0&service=github + :target: https://coveralls.io/github/timothycrosley/isort?branch=release%2F2.6.0 + :alt: Coverage + +.. image:: https://img.shields.io/github/license/mashape/apistatus.svg + :target: https://pypi.org/project/hug/ + :alt: License + +.. image:: https://badges.gitter.im/Join%20Chat.svg + :alt: Join the chat at https://gitter.im/timothycrosley/isort + :target: https://gitter.im/timothycrosley/isort?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge + +.. image:: https://pepy.tech/badge/isort + :alt: Downloads + :target: https://pepy.tech/project/isort + +isort your python imports for you so you don't have to. + +isort is a Python utility / library to sort imports alphabetically, and automatically separated into sections. +It provides a command line utility, Python library and `plugins for various editors `_ to quickly sort all your imports. +It currently cleanly supports Python 2.7 and 3.4+ without any dependencies. + +.. image:: https://raw.github.com/timothycrosley/isort/develop/example.gif + :alt: Example Usage + +Before isort: + +.. code-block:: python + + from my_lib import Object + + print("Hey") + + import os + + from my_lib import Object3 + + from my_lib import Object2 + + import sys + + from third_party import lib15, lib1, lib2, lib3, lib4, lib5, lib6, lib7, lib8, lib9, lib10, lib11, lib12, lib13, lib14 + + import sys + + from __future__ import absolute_import + + from third_party import lib3 + + print("yo") + +After isort: + +.. code-block:: python + + from __future__ import absolute_import + + import os + import sys + + from third_party import (lib1, lib2, lib3, lib4, lib5, lib6, lib7, lib8, + lib9, lib10, lib11, lib12, lib13, lib14, lib15) + + from my_lib import Object, Object2, Object3 + + print("Hey") + print("yo") + +Installing isort +================ + +Installing isort is as simple as: + +.. code-block:: bash + + pip install isort + +Install isort with requirements.txt support: + +.. code-block:: bash + + pip install isort[requirements] + +Install isort with Pipfile support: + +.. code-block:: bash + + pip install isort[pipfile] + +Install isort with both formats support: + +.. code-block:: bash + + pip install isort[requirements,pipfile] + +Using isort +=========== + +**From the command line**: + +.. code-block:: bash + + isort mypythonfile.py mypythonfile2.py + +or recursively: + +.. code-block:: bash + + isort -rc . + +*which is equivalent to:* + +.. code-block:: bash + + isort **/*.py + +or to see the proposed changes without applying them: + +.. code-block:: bash + + isort mypythonfile.py --diff + +Finally, to atomically run isort against a project, only applying changes if they don't introduce syntax errors do: + +.. code-block:: bash + + isort -rc --atomic . + +(Note: this is disabled by default as it keeps isort from being able to run against code written using a different version of Python) + +**From within Python**: + +.. code-block:: bash + + from isort import SortImports + + SortImports("pythonfile.py") + +or: + +.. code-block:: bash + + from isort import SortImports + + new_contents = SortImports(file_contents=old_contents).output + +**From within Kate:** + +.. code-block:: bash + + ctrl+[ + +or: + +.. code-block:: bash + + menu > Python > Sort Imports + +Installing isort's Kate plugin +============================== + +For KDE 4.13+ / Pate 2.0+: + +.. code-block:: bash + + wget https://raw.github.com/timothycrosley/isort/master/kate_plugin/isort_plugin.py --output-document ~/.kde/share/apps/kate/pate/isort_plugin.py + wget https://raw.github.com/timothycrosley/isort/master/kate_plugin/isort_plugin_ui.rc --output-document ~/.kde/share/apps/kate/pate/isort_plugin_ui.rc + wget https://raw.github.com/timothycrosley/isort/master/kate_plugin/katepart_isort.desktop --output-document ~/.kde/share/kde4/services/katepart_isort.desktop + +For all older versions: + +.. code-block:: bash + + wget https://raw.github.com/timothycrosley/isort/master/kate_plugin/isort_plugin_old.py --output-document ~/.kde/share/apps/kate/pate/isort_plugin.py + +You will then need to restart kate and enable Python Plugins as well as the isort plugin itself. + +Installing isort's for your preferred text editor +================================================= + +Several plugins have been written that enable to use isort from within a variety of text-editors. +You can find a full list of them `on the isort wiki `_. +Additionally, I will enthusiastically accept pull requests that include plugins for other text editors +and add documentation for them as I am notified. + +How does isort work? +==================== + +isort parses specified files for global level import lines (imports outside of try / except blocks, functions, etc..) +and puts them all at the top of the file grouped together by the type of import: + +- Future +- Python Standard Library +- Third Party +- Current Python Project +- Explicitly Local (. before import, as in: ``from . import x``) +- Custom Separate Sections (Defined by forced_separate list in configuration file) +- Custom Sections (Defined by sections list in configuration file) + +Inside of each section the imports are sorted alphabetically. isort automatically removes duplicate python imports, +and wraps long from imports to the specified line length (defaults to 79). + +When will isort not work? +========================= + +If you ever have the situation where you need to have a try / except block in the middle of top-level imports or if +your import order is directly linked to precedence. + +For example: a common practice in Django settings files is importing * from various settings files to form +a new settings file. In this case if any of the imports change order you are changing the settings definition itself. + +However, you can configure isort to skip over just these files - or even to force certain imports to the top. + +Configuring isort +================= + +If you find the default isort settings do not work well for your project, isort provides several ways to adjust +the behavior. + +To configure isort for a single user create a ``~/.isort.cfg`` or ``$XDG_CONFIG_HOME/isort.cfg`` file: + +.. code-block:: ini + + [settings] + line_length=120 + force_to_top=file1.py,file2.py + skip=file3.py,file4.py + known_future_library=future,pies + known_standard_library=std,std2 + known_third_party=randomthirdparty + known_first_party=mylib1,mylib2 + indent=' ' + multi_line_output=3 + length_sort=1 + forced_separate=django.contrib,django.utils + default_section=FIRSTPARTY + no_lines_before=LOCALFOLDER + +Additionally, you can specify project level configuration simply by placing a ``.isort.cfg`` file at the root of your +project. isort will look up to 25 directories up, from the file it is ran against, to find a project specific configuration. + +Or, if you prefer, you can add an ``isort`` or ``tool:isort`` section to your project's ``setup.cfg`` or ``tox.ini`` file with any desired settings. + +You can also add your desired settings under a ``[tool.isort]`` section in your ``pyproject.toml`` file. + +You can then override any of these settings by using command line arguments, or by passing in override values to the +SortImports class. + +Finally, as of version 3.0 isort supports editorconfig files using the standard syntax defined here: +https://editorconfig.org/ + +Meaning you place any standard isort configuration parameters within a .editorconfig file under the ``*.py`` section +and they will be honored. + +For a full list of isort settings and their meanings `take a look at the isort wiki `_. + +Multi line output modes +======================= + +You will notice above the "multi_line_output" setting. This setting defines how from imports wrap when they extend +past the line_length limit and has 6 possible settings: + +**0 - Grid** + +.. code-block:: python + + from third_party import (lib1, lib2, lib3, + lib4, lib5, ...) + +**1 - Vertical** + +.. code-block:: python + + from third_party import (lib1, + lib2, + lib3 + lib4, + lib5, + ...) + +**2 - Hanging Indent** + +.. code-block:: python + + from third_party import \ + lib1, lib2, lib3, \ + lib4, lib5, lib6 + +**3 - Vertical Hanging Indent** + +.. code-block:: python + + from third_party import ( + lib1, + lib2, + lib3, + lib4, + ) + +**4 - Hanging Grid** + +.. code-block:: python + + from third_party import ( + lib1, lib2, lib3, lib4, + lib5, ...) + +**5 - Hanging Grid Grouped** + +.. code-block:: python + + from third_party import ( + lib1, lib2, lib3, lib4, + lib5, ... + ) + +**6 - Hanging Grid Grouped, No Trailing Comma** + +In Mode 5 isort leaves a single extra space to maintain consistency of output when a comma is added at the end. +Mode 6 is the same - except that no extra space is maintained leading to the possibility of lines one character longer. +You can enforce a trailing comma by using this in conjunction with `-tc` or `trailing_comma: True`. + +.. code-block:: python + + from third_party import ( + lib1, lib2, lib3, lib4, + lib5 + ) + +**7 - NOQA** + +.. code-block:: python + + from third_party import lib1, lib2, lib3, ... # NOQA + +Alternatively, you can set ``force_single_line`` to ``True`` (``-sl`` on the command line) and every import will appear on its +own line: + +.. code-block:: python + + from third_party import lib1 + from third_party import lib2 + from third_party import lib3 + ... + +Note: to change the how constant indents appear - simply change the indent property with the following accepted formats: + +* Number of spaces you would like. For example: 4 would cause standard 4 space indentation. +* Tab +* A verbatim string with quotes around it. + +For example: + +.. code-block:: python + + " " + +is equivalent to 4. + +For the import styles that use parentheses, you can control whether or not to +include a trailing comma after the last import with the ``include_trailing_comma`` +option (defaults to ``False``). + +Intelligently Balanced Multi-line Imports +========================================= + +As of isort 3.1.0 support for balanced multi-line imports has been added. +With this enabled isort will dynamically change the import length to the one that produces the most balanced grid, +while staying below the maximum import length defined. + +Example: + +.. code-block:: python + + from __future__ import (absolute_import, division, + print_function, unicode_literals) + +Will be produced instead of: + +.. code-block:: python + + from __future__ import (absolute_import, division, print_function, + unicode_literals) + +To enable this set ``balanced_wrapping`` to ``True`` in your config or pass the ``-e`` option into the command line utility. + +Custom Sections and Ordering +============================ + +You can change the section order with ``sections`` option from the default of: + +.. code-block:: ini + + FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,LOCALFOLDER + +to your preference: + +.. code-block:: ini + + sections=FUTURE,STDLIB,FIRSTPARTY,THIRDPARTY,LOCALFOLDER + +You also can define your own sections and their order. + +Example: + +.. code-block:: ini + + known_django=django + known_pandas=pandas,numpy + sections=FUTURE,STDLIB,DJANGO,THIRDPARTY,PANDAS,FIRSTPARTY,LOCALFOLDER + +would create two new sections with the specified known modules. + +The ``no_lines_before`` option will prevent the listed sections from being split from the previous section by an empty line. + +Example: + +.. code-block:: ini + + sections=FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,LOCALFOLDER + no_lines_before=LOCALFOLDER + +would produce a section with both FIRSTPARTY and LOCALFOLDER modules combined. + +Auto-comment import sections +============================ + +Some projects prefer to have import sections uniquely titled to aid in identifying the sections quickly +when visually scanning. isort can automate this as well. To do this simply set the ``import_heading_{section_name}`` +setting for each section you wish to have auto commented - to the desired comment. + +For Example: + +.. code-block:: ini + + import_heading_stdlib=Standard Library + import_heading_firstparty=My Stuff + +Would lead to output looking like the following: + +.. code-block:: python + + # Standard Library + import os + import sys + + import django.settings + + # My Stuff + import myproject.test + +Ordering by import length +========================= + +isort also makes it easy to sort your imports by length, simply by setting the ``length_sort`` option to ``True``. +This will result in the following output style: + +.. code-block:: python + + from evn.util import ( + Pool, + Dict, + Options, + Constant, + DecayDict, + UnexpectedCodePath, + ) + +It is also possible to opt-in to sorting imports by length for only specific +sections by using ``length_sort_`` followed by the section name as a +configuration item, e.g.:: + + length_sort_stdlib=1 + +Skip processing of imports (outside of configuration) +===================================================== + +To make isort ignore a single import simply add a comment at the end of the import line containing the text ``isort:skip``: + +.. code-block:: python + + import module # isort:skip + +or: + +.. code-block:: python + + from xyz import (abc, # isort:skip + yo, + hey) + +To make isort skip an entire file simply add ``isort:skip_file`` to the module's doc string: + +.. code-block:: python + + """ my_module.py + Best module ever + + isort:skip_file + """ + + import b + import a + +Adding an import to multiple files +================================== + +isort makes it easy to add an import statement across multiple files, while being assured it's correctly placed. + +From the command line: + +.. code-block:: bash + + isort -a "from __future__ import print_function" *.py + +from within Kate: + +.. code-block:: + + ctrl+] + +or: + +.. code-block:: + + menu > Python > Add Import + +Removing an import from multiple files +====================================== + +isort also makes it easy to remove an import from multiple files, without having to be concerned with how it was originally +formatted. + +From the command line: + +.. code-block:: bash + + isort -rm "os.system" *.py + +from within Kate: + +.. code-block:: + + ctrl+shift+] + +or: + +.. code-block:: + + menu > Python > Remove Import + +Using isort to verify code +========================== + +The ``--check-only`` option +--------------------------- + +isort can also be used to used to verify that code is correctly formatted by running it with ``-c``. +Any files that contain incorrectly sorted and/or formatted imports will be outputted to ``stderr``. + +.. code-block:: bash + + isort **/*.py -c -vb + + SUCCESS: /home/timothy/Projects/Open_Source/isort/isort_kate_plugin.py Everything Looks Good! + ERROR: /home/timothy/Projects/Open_Source/isort/isort/isort.py Imports are incorrectly sorted. + +One great place this can be used is with a pre-commit git hook, such as this one by @acdha: + +https://gist.github.com/acdha/8717683 + +This can help to ensure a certain level of code quality throughout a project. + + +Git hook +-------- + +isort provides a hook function that can be integrated into your Git pre-commit script to check +Python code before committing. + +To cause the commit to fail if there are isort errors (strict mode), include the following in +``.git/hooks/pre-commit``: + +.. code-block:: python + + #!/usr/bin/env python + import sys + from isort.hooks import git_hook + + sys.exit(git_hook(strict=True, modify=True)) + +If you just want to display warnings, but allow the commit to happen anyway, call ``git_hook`` without +the `strict` parameter. If you want to display warnings, but not also fix the code, call ``git_hook`` without +the `modify` parameter. + +Setuptools integration +---------------------- + +Upon installation, isort enables a ``setuptools`` command that checks Python files +declared by your project. + +Running ``python setup.py isort`` on the command line will check the files +listed in your ``py_modules`` and ``packages``. If any warning is found, +the command will exit with an error code: + +.. code-block:: bash + + $ python setup.py isort + +Also, to allow users to be able to use the command without having to install +isort themselves, add isort to the setup_requires of your ``setup()`` like so: + +.. code-block:: python + + setup( + name="project", + packages=["project"], + + setup_requires=[ + "isort" + ] + ) + + +Why isort? +========== + +isort simply stands for import sort. It was originally called "sortImports" however I got tired of typing the extra +characters and came to the realization camelCase is not pythonic. + +I wrote isort because in an organization I used to work in the manager came in one day and decided all code must +have alphabetically sorted imports. The code base was huge - and he meant for us to do it by hand. However, being a +programmer - I'm too lazy to spend 8 hours mindlessly performing a function, but not too lazy to spend 16 +hours automating it. I was given permission to open source sortImports and here we are :) + +-------------------------------------------- + +Thanks and I hope you find isort useful! + +~Timothy Crosley + + diff --git a/venv/Lib/site-packages/isort-4.3.21.dist-info/RECORD b/venv/Lib/site-packages/isort-4.3.21.dist-info/RECORD new file mode 100644 index 0000000..fbe22ff --- /dev/null +++ b/venv/Lib/site-packages/isort-4.3.21.dist-info/RECORD @@ -0,0 +1,30 @@ +../../Scripts/isort.exe,sha256=LehBbE3s782QB5Pj-GAeCX3qPl-km1TABLOXedSMAcE,102790 +isort-4.3.21.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +isort-4.3.21.dist-info/LICENSE,sha256=BjKUABw9Uj26y6ud1UrCKZgnVsyvWSylMkCysM3YIGU,1089 +isort-4.3.21.dist-info/METADATA,sha256=8fY1DuLOn_UnCH58A8AcsCUZpYWeLCsQF-n-GIXlxOM,19749 +isort-4.3.21.dist-info/RECORD,, +isort-4.3.21.dist-info/WHEEL,sha256=h_aVn5OB2IERUjMbi2pucmR_zzWJtk303YXvhh60NJ8,110 +isort-4.3.21.dist-info/entry_points.txt,sha256=2M99eSFpnteDm3ekW8jya2a3A0-vFntKdT1fP93Tyks,148 +isort-4.3.21.dist-info/top_level.txt,sha256=mrBLoVpJnQWBbnMOSdzkjN1E9Z-e3Zd-MRlo88bstUk,6 +isort/__init__.py,sha256=_DTTMASePJCqsKnRJPf_YgFv5ZJOHg1uPLkrQHcqA2c,1380 +isort/__main__.py,sha256=9tThPqyOnY86bHaxJ0WciTd-rfKN3O-PQoNGBO2xhio,205 +isort/__pycache__/__init__.cpython-37.pyc,, +isort/__pycache__/__main__.cpython-37.pyc,, +isort/__pycache__/finders.cpython-37.pyc,, +isort/__pycache__/hooks.cpython-37.pyc,, +isort/__pycache__/isort.cpython-37.pyc,, +isort/__pycache__/main.cpython-37.pyc,, +isort/__pycache__/natural.cpython-37.pyc,, +isort/__pycache__/pie_slice.cpython-37.pyc,, +isort/__pycache__/pylama_isort.cpython-37.pyc,, +isort/__pycache__/settings.cpython-37.pyc,, +isort/__pycache__/utils.cpython-37.pyc,, +isort/finders.py,sha256=0w39ygCFuOv40OHixflrOv_Xna8K78usa5ySwS9GkWE,13185 +isort/hooks.py,sha256=GcyPMF7raq3B1z4ubbzIWoMiY5DePDni0Nct5U87uMQ,3230 +isort/isort.py,sha256=krLW0QgwnVjUD3hYTpQmWkMa5TDEZxx6AbX80vlVNoA,53910 +isort/main.py,sha256=rS7dAu_0T-8Jxi3sDWu00IOjt4j0r3vJi6bXZn6RnQg,21974 +isort/natural.py,sha256=hlcWsGKfIUC4Atjp5IIqDCmg1madY6ave9oNiTGjJ0Q,1794 +isort/pie_slice.py,sha256=hO6l1XocvGAd8XTR8526r-G7XIncUQB53_DHQ4AZEYI,5612 +isort/pylama_isort.py,sha256=wF6NOEVuibme0l-5pH9pCW1j4vGaFamuwll494TnzDI,785 +isort/settings.py,sha256=4_Jf-9GaBy9fi6UJctLqesIAMAegWekRIJdJmH5TBNE,17452 +isort/utils.py,sha256=KtazEoeX9XmtcrUGP6xl5lBX7Ye2N08ACGaWxiGcIaE,1344 diff --git a/venv/Lib/site-packages/isort-4.3.21.dist-info/WHEEL b/venv/Lib/site-packages/isort-4.3.21.dist-info/WHEEL new file mode 100644 index 0000000..78e6f69 --- /dev/null +++ b/venv/Lib/site-packages/isort-4.3.21.dist-info/WHEEL @@ -0,0 +1,6 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.33.4) +Root-Is-Purelib: true +Tag: py2-none-any +Tag: py3-none-any + diff --git a/venv/Lib/site-packages/isort-4.3.21.dist-info/entry_points.txt b/venv/Lib/site-packages/isort-4.3.21.dist-info/entry_points.txt new file mode 100644 index 0000000..3a77a18 --- /dev/null +++ b/venv/Lib/site-packages/isort-4.3.21.dist-info/entry_points.txt @@ -0,0 +1,9 @@ +[console_scripts] +isort = isort.main:main + +[distutils.commands] +isort = isort.main:ISortCommand + +[pylama.linter] +isort = isort.pylama_isort:Linter + diff --git a/venv/Lib/site-packages/isort-4.3.21.dist-info/top_level.txt b/venv/Lib/site-packages/isort-4.3.21.dist-info/top_level.txt new file mode 100644 index 0000000..2a79243 --- /dev/null +++ b/venv/Lib/site-packages/isort-4.3.21.dist-info/top_level.txt @@ -0,0 +1 @@ +isort diff --git a/venv/Lib/site-packages/isort/__init__.py b/venv/Lib/site-packages/isort/__init__.py new file mode 100644 index 0000000..9a0a073 --- /dev/null +++ b/venv/Lib/site-packages/isort/__init__.py @@ -0,0 +1,28 @@ +"""__init__.py. + +Defines the isort module to include the SortImports utility class as well as any defined settings. + +Copyright (C) 2013 Timothy Edmund Crosley + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and +to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or +substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF +CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +""" + +from __future__ import absolute_import, division, print_function, unicode_literals + +from . import settings # noqa: F401 +from .isort import SortImports # noqa: F401 + +__version__ = "4.3.21" diff --git a/venv/Lib/site-packages/isort/__main__.py b/venv/Lib/site-packages/isort/__main__.py new file mode 100644 index 0000000..91cc154 --- /dev/null +++ b/venv/Lib/site-packages/isort/__main__.py @@ -0,0 +1,9 @@ +from __future__ import absolute_import + +from isort.pie_slice import apply_changes_to_python_environment + +apply_changes_to_python_environment() + +from isort.main import main # noqa: E402 isort:skip + +main() diff --git a/venv/Lib/site-packages/isort/__pycache__/__init__.cpython-37.pyc 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files /dev/null and b/venv/Lib/site-packages/isort/__pycache__/utils.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/isort/finders.py b/venv/Lib/site-packages/isort/finders.py new file mode 100644 index 0000000..225bd12 --- /dev/null +++ b/venv/Lib/site-packages/isort/finders.py @@ -0,0 +1,382 @@ +"""Finders try to find right section for passed module name +""" +from __future__ import absolute_import, division, print_function, unicode_literals + +import inspect +import os +import os.path +import re +import sys +import sysconfig +from fnmatch import fnmatch +from glob import glob + +from .pie_slice import PY2 +from .utils import chdir, exists_case_sensitive + +try: + from pipreqs import pipreqs +except ImportError: + pipreqs = None + +try: + from pip_api import parse_requirements +except ImportError: + parse_requirements = None + +try: + from requirementslib import Pipfile +except ImportError: + Pipfile = None + +try: + from functools import lru_cache +except ImportError: + from backports.functools_lru_cache import lru_cache + + +KNOWN_SECTION_MAPPING = { + 'STDLIB': 'STANDARD_LIBRARY', + 'FUTURE': 'FUTURE_LIBRARY', + 'FIRSTPARTY': 'FIRST_PARTY', + 'THIRDPARTY': 'THIRD_PARTY', +} + + +class BaseFinder(object): + def __init__(self, config, sections): + self.config = config + self.sections = sections + + +class ForcedSeparateFinder(BaseFinder): + def find(self, module_name): + for forced_separate in self.config['forced_separate']: + # Ensure all forced_separate patterns will match to end of string + path_glob = forced_separate + if not forced_separate.endswith('*'): + path_glob = '%s*' % forced_separate + + if fnmatch(module_name, path_glob) or fnmatch(module_name, '.' + path_glob): + return forced_separate + + +class LocalFinder(BaseFinder): + def find(self, module_name): + if module_name.startswith("."): + return self.sections.LOCALFOLDER + + +class KnownPatternFinder(BaseFinder): + def __init__(self, config, sections): + super(KnownPatternFinder, self).__init__(config, sections) + + self.known_patterns = [] + for placement in reversed(self.sections): + known_placement = KNOWN_SECTION_MAPPING.get(placement, placement) + config_key = 'known_{0}'.format(known_placement.lower()) + known_patterns = self.config.get(config_key, []) + known_patterns = [ + pattern + for known_pattern in known_patterns + for pattern in self._parse_known_pattern(known_pattern) + ] + for known_pattern in known_patterns: + regexp = '^' + known_pattern.replace('*', '.*').replace('?', '.?') + '$' + self.known_patterns.append((re.compile(regexp), placement)) + + @staticmethod + def _is_package(path): + """ + Evaluates if path is a python package + """ + if PY2: + return os.path.exists(os.path.join(path, '__init__.py')) + else: + return os.path.isdir(path) + + def _parse_known_pattern(self, pattern): + """ + Expand pattern if identified as a directory and return found sub packages + """ + if pattern.endswith(os.path.sep): + patterns = [ + filename + for filename in os.listdir(pattern) + if self._is_package(os.path.join(pattern, filename)) + ] + else: + patterns = [pattern] + + return patterns + + def find(self, module_name): + # Try to find most specific placement instruction match (if any) + parts = module_name.split('.') + module_names_to_check = ('.'.join(parts[:first_k]) for first_k in range(len(parts), 0, -1)) + for module_name_to_check in module_names_to_check: + for pattern, placement in self.known_patterns: + if pattern.match(module_name_to_check): + return placement + + +class PathFinder(BaseFinder): + def __init__(self, config, sections): + super(PathFinder, self).__init__(config, sections) + + # restore the original import path (i.e. not the path to bin/isort) + self.paths = [os.getcwd()] + + # virtual env + self.virtual_env = self.config.get('virtual_env') or os.environ.get('VIRTUAL_ENV') + if self.virtual_env: + self.virtual_env = os.path.realpath(self.virtual_env) + self.virtual_env_src = False + if self.virtual_env: + self.virtual_env_src = '{0}/src/'.format(self.virtual_env) + for path in glob('{0}/lib/python*/site-packages'.format(self.virtual_env)): + if path not in self.paths: + self.paths.append(path) + for path in glob('{0}/lib/python*/*/site-packages'.format(self.virtual_env)): + if path not in self.paths: + self.paths.append(path) + for path in glob('{0}/src/*'.format(self.virtual_env)): + if os.path.isdir(path): + self.paths.append(path) + + # conda + self.conda_env = self.config.get('conda_env') or os.environ.get('CONDA_PREFIX') + if self.conda_env: + self.conda_env = os.path.realpath(self.conda_env) + for path in glob('{0}/lib/python*/site-packages'.format(self.conda_env)): + if path not in self.paths: + self.paths.append(path) + for path in glob('{0}/lib/python*/*/site-packages'.format(self.conda_env)): + if path not in self.paths: + self.paths.append(path) + + # handle case-insensitive paths on windows + self.stdlib_lib_prefix = os.path.normcase(sysconfig.get_paths()['stdlib']) + if self.stdlib_lib_prefix not in self.paths: + self.paths.append(self.stdlib_lib_prefix) + + # handle compiled libraries + self.ext_suffix = sysconfig.get_config_var("EXT_SUFFIX") or ".so" + + # add system paths + for path in sys.path[1:]: + if path not in self.paths: + self.paths.append(path) + + def find(self, module_name): + for prefix in self.paths: + package_path = "/".join((prefix, module_name.split(".")[0])) + is_module = (exists_case_sensitive(package_path + ".py") or + exists_case_sensitive(package_path + ".so") or + exists_case_sensitive(package_path + self.ext_suffix) or + exists_case_sensitive(package_path + "/__init__.py")) + is_package = exists_case_sensitive(package_path) and os.path.isdir(package_path) + if is_module or is_package: + if 'site-packages' in prefix: + return self.sections.THIRDPARTY + if 'dist-packages' in prefix: + return self.sections.THIRDPARTY + if self.virtual_env and self.virtual_env_src in prefix: + return self.sections.THIRDPARTY + if self.conda_env and self.conda_env in prefix: + return self.sections.THIRDPARTY + if os.path.normcase(prefix).startswith(self.stdlib_lib_prefix): + return self.sections.STDLIB + return self.config['default_section'] + + +class ReqsBaseFinder(BaseFinder): + def __init__(self, config, sections, path='.'): + super(ReqsBaseFinder, self).__init__(config, sections) + self.path = path + if self.enabled: + self.mapping = self._load_mapping() + self.names = self._load_names() + + @staticmethod + def _load_mapping(): + """Return list of mappings `package_name -> module_name` + + Example: + django-haystack -> haystack + """ + if not pipreqs: + return + path = os.path.dirname(inspect.getfile(pipreqs)) + path = os.path.join(path, 'mapping') + with open(path) as f: + # pypi_name: import_name + return dict(line.strip().split(":")[::-1] for line in f) + + def _load_names(self): + """Return list of thirdparty modules from requirements + """ + names = [] + for path in self._get_files(): + for name in self._get_names(path): + names.append(self._normalize_name(name)) + return names + + @staticmethod + def _get_parents(path): + prev = '' + while path != prev: + prev = path + yield path + path = os.path.dirname(path) + + def _get_files(self): + """Return paths to all requirements files + """ + path = os.path.abspath(self.path) + if os.path.isfile(path): + path = os.path.dirname(path) + + for path in self._get_parents(path): + for file_path in self._get_files_from_dir(path): + yield file_path + + def _normalize_name(self, name): + """Convert package name to module name + + Examples: + Django -> django + django-haystack -> haystack + Flask-RESTFul -> flask_restful + """ + if self.mapping: + name = self.mapping.get(name, name) + return name.lower().replace('-', '_') + + def find(self, module_name): + # required lib not installed yet + if not self.enabled: + return + + module_name, _sep, _submodules = module_name.partition('.') + module_name = module_name.lower() + if not module_name: + return + + for name in self.names: + if module_name == name: + return self.sections.THIRDPARTY + + +class RequirementsFinder(ReqsBaseFinder): + exts = ('.txt', '.in') + enabled = bool(parse_requirements) + + def _get_files_from_dir(self, path): + """Return paths to requirements files from passed dir. + """ + return RequirementsFinder._get_files_from_dir_cached(path) + + @classmethod + @lru_cache(maxsize=16) + def _get_files_from_dir_cached(cls, path): + result = [] + + for fname in os.listdir(path): + if 'requirements' not in fname: + continue + full_path = os.path.join(path, fname) + + # *requirements*/*.{txt,in} + if os.path.isdir(full_path): + for subfile_name in os.listdir(path): + for ext in cls.exts: + if subfile_name.endswith(ext): + result.append(os.path.join(path, subfile_name)) + continue + + # *requirements*.{txt,in} + if os.path.isfile(full_path): + for ext in cls.exts: + if fname.endswith(ext): + result.append(full_path) + break + + return result + + def _get_names(self, path): + """Load required packages from path to requirements file + """ + return RequirementsFinder._get_names_cached(path) + + @classmethod + @lru_cache(maxsize=16) + def _get_names_cached(cls, path): + results = [] + + with chdir(os.path.dirname(path)): + requirements = parse_requirements(path) + for req in requirements.values(): + if req.name: + results.append(req.name) + + return results + + +class PipfileFinder(ReqsBaseFinder): + enabled = bool(Pipfile) + + def _get_names(self, path): + with chdir(path): + project = Pipfile.load(path) + for req in project.packages: + yield req.name + + def _get_files_from_dir(self, path): + if 'Pipfile' in os.listdir(path): + yield path + + +class DefaultFinder(BaseFinder): + def find(self, module_name): + return self.config['default_section'] + + +class FindersManager(object): + finders = ( + ForcedSeparateFinder, + LocalFinder, + KnownPatternFinder, + PathFinder, + PipfileFinder, + RequirementsFinder, + DefaultFinder, + ) + + def __init__(self, config, sections, finders=None): + self.verbose = config.get('verbose', False) + + finders = self.finders if finders is None else finders + self.finders = [] + for finder in finders: + try: + self.finders.append(finder(config, sections)) + except Exception as exception: + # if one finder fails to instantiate isort can continue using the rest + if self.verbose: + print('{} encountered an error ({}) during instantiation and cannot be used'.format(finder.__name__, + str(exception))) + self.finders = tuple(self.finders) + + def find(self, module_name): + for finder in self.finders: + try: + section = finder.find(module_name) + except Exception as exception: + # isort has to be able to keep trying to identify the correct import section even if one approach fails + if self.verbose: + print('{} encountered an error ({}) while trying to identify the {} module'.format(finder.__name__, + str(exception), + module_name)) + if section is not None: + return section diff --git a/venv/Lib/site-packages/isort/hooks.py b/venv/Lib/site-packages/isort/hooks.py new file mode 100644 index 0000000..16a16e1 --- /dev/null +++ b/venv/Lib/site-packages/isort/hooks.py @@ -0,0 +1,91 @@ +"""isort.py. + +Defines a git hook to allow pre-commit warnings and errors about import order. + +usage: + exit_code = git_hook(strict=True|False, modify=True|False) + +Copyright (C) 2015 Helen Sherwood-Taylor + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and +to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or +substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF +CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +""" +import subprocess + +from isort import SortImports + + +def get_output(command): + """ + Run a command and return raw output + + :param str command: the command to run + :returns: the stdout output of the command + """ + return subprocess.check_output(command.split()) + + +def get_lines(command): + """ + Run a command and return lines of output + + :param str command: the command to run + :returns: list of whitespace-stripped lines output by command + """ + stdout = get_output(command) + return [line.strip().decode('utf-8') for line in stdout.splitlines()] + + +def git_hook(strict=False, modify=False): + """ + Git pre-commit hook to check staged files for isort errors + + :param bool strict - if True, return number of errors on exit, + causing the hook to fail. If False, return zero so it will + just act as a warning. + :param bool modify - if True, fix the sources if they are not + sorted properly. If False, only report result without + modifying anything. + + :return number of errors if in strict mode, 0 otherwise. + """ + + # Get list of files modified and staged + diff_cmd = "git diff-index --cached --name-only --diff-filter=ACMRTUXB HEAD" + files_modified = get_lines(diff_cmd) + + errors = 0 + for filename in files_modified: + if filename.endswith('.py'): + # Get the staged contents of the file + staged_cmd = "git show :%s" % filename + staged_contents = get_output(staged_cmd) + + sort = SortImports( + file_path=filename, + file_contents=staged_contents.decode(), + check=True + ) + + if sort.incorrectly_sorted: + errors += 1 + if modify: + SortImports( + file_path=filename, + file_contents=staged_contents.decode(), + check=False, + ) + + return errors if strict else 0 diff --git a/venv/Lib/site-packages/isort/isort.py b/venv/Lib/site-packages/isort/isort.py new file mode 100644 index 0000000..245e53f --- /dev/null +++ b/venv/Lib/site-packages/isort/isort.py @@ -0,0 +1,1060 @@ +"""isort.py. + +Exposes a simple library to sort through imports within Python code + +usage: + SortImports(file_name) +or: + sorted = SortImports(file_contents=file_contents).output + +Copyright (C) 2013 Timothy Edmund Crosley + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and +to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or +substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF +CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +""" +from __future__ import absolute_import, division, print_function, unicode_literals + +import codecs +import copy +import io +import itertools +import os +import re +import sys +from collections import OrderedDict, namedtuple +from datetime import datetime +from difflib import unified_diff + +from . import settings +from .finders import FindersManager +from .natural import nsorted +from .pie_slice import input + + +class SortImports(object): + incorrectly_sorted = False + skipped = False + + def __init__(self, file_path=None, file_contents=None, file_=None, write_to_stdout=False, check=False, + show_diff=False, settings_path=None, ask_to_apply=False, run_path='', check_skip=True, + extension=None, **setting_overrides): + if not settings_path and file_path: + settings_path = os.path.dirname(os.path.abspath(file_path)) + settings_path = settings_path or os.getcwd() + + self.config = settings.from_path(settings_path).copy() + for key, value in setting_overrides.items(): + access_key = key.replace('not_', '').lower() + # The sections config needs to retain order and can't be converted to a set. + if access_key != 'sections' and type(self.config.get(access_key)) in (list, tuple): + if key.startswith('not_'): + self.config[access_key] = list(set(self.config[access_key]).difference(value)) + else: + self.config[access_key] = list(set(self.config[access_key]).union(value)) + else: + self.config[key] = value + + if self.config['force_alphabetical_sort']: + self.config.update({'force_alphabetical_sort_within_sections': True, + 'no_sections': True, + 'lines_between_types': 1, + 'from_first': True}) + + indent = str(self.config['indent']) + if indent.isdigit(): + indent = " " * int(indent) + else: + indent = indent.strip("'").strip('"') + if indent.lower() == "tab": + indent = "\t" + self.config['indent'] = indent + + self.config['comment_prefix'] = self.config['comment_prefix'].strip("'").strip('"') + + self.place_imports = {} + self.import_placements = {} + self.remove_imports = [self._format_simplified(removal) for removal in self.config['remove_imports']] + self.add_imports = [self._format_natural(addition) for addition in self.config['add_imports']] + self._section_comments = ["# " + value for key, value in self.config.items() if + key.startswith('import_heading') and value] + + self.file_encoding = 'utf-8' + file_name = file_path + self.file_path = file_path or "" + if file_path: + file_path = os.path.abspath(file_path) + if check_skip: + if run_path and file_path.startswith(run_path): + file_name = file_path.replace(run_path, '', 1) + else: + file_name = file_path + run_path = '' + + if settings.should_skip(file_name, self.config, run_path): + self.skipped = True + if self.config['verbose']: + print("WARNING: {0} was skipped as it's listed in 'skip' setting" + " or matches a glob in 'skip_glob' setting".format(file_path)) + file_contents = None + if not self.skipped and not file_contents: + with io.open(file_path, 'rb') as f: + file_encoding = coding_check(f) + with io.open(file_path, encoding=file_encoding, newline='') as file_to_import_sort: + try: + file_contents = file_to_import_sort.read() + self.file_path = file_path + self.file_encoding = file_encoding + encoding_success = True + except UnicodeDecodeError: + encoding_success = False + + if not encoding_success: + with io.open(file_path, newline='') as file_to_import_sort: + try: + file_contents = file_to_import_sort.read() + self.file_path = file_path + self.file_encoding = file_to_import_sort.encoding + except UnicodeDecodeError: + encoding_success = False + file_contents = None + self.skipped = True + if self.config['verbose']: + print("WARNING: {} was skipped as it couldn't be opened with the given " + "{} encoding or {} fallback encoding".format(file_path, + self.file_encoding, + file_to_import_sort.encoding)) + elif file_: + try: + file_.seek(0) + self.file_encoding = coding_check(file_) + file_.seek(0) + except (io.UnsupportedOperation, IOError): + pass + reader = codecs.getreader(self.file_encoding) + file_contents = reader(file_).read() + + # try to decode file_contents + if file_contents: + try: + basestring + # python 2 + need_decode = (str, bytes) + except NameError: + # python 3 + need_decode = bytes + + if isinstance(file_contents, need_decode): + file_contents = file_contents.decode(coding_check(file_contents.splitlines())) + + if file_contents is None or ("isort:" + "skip_file") in file_contents: + self.skipped = True + self.output = None + if write_to_stdout and file_contents: + sys.stdout.write(file_contents) + return + + if self.config['line_ending']: + self.line_separator = self.config['line_ending'] + else: + if '\r\n' in file_contents: + self.line_separator = '\r\n' + elif '\r' in file_contents: + self.line_separator = '\r' + else: + self.line_separator = '\n' + self.in_lines = file_contents.split(self.line_separator) + self.original_length = len(self.in_lines) + if (self.original_length > 1 or self.in_lines[:1] not in ([], [""])) or self.config['force_adds']: + for add_import in self.add_imports: + self.in_lines.append(add_import) + self.number_of_lines = len(self.in_lines) + + if not extension: + self.extension = file_name.split('.')[-1] if file_name else "py" + else: + self.extension = extension + + self.out_lines = [] + self.comments = {'from': {}, 'straight': {}, 'nested': {}, 'above': {'straight': {}, 'from': {}}} + self.imports = OrderedDict() + self.as_map = {} + + section_names = self.config['sections'] + self.sections = namedtuple('Sections', section_names)(*[name for name in section_names]) + for section in itertools.chain(self.sections, self.config['forced_separate']): + self.imports[section] = {'straight': OrderedDict(), 'from': OrderedDict()} + + self.finder = FindersManager(config=self.config, sections=self.sections) + + self.index = 0 + self.import_index = -1 + self._first_comment_index_start = -1 + self._first_comment_index_end = -1 + self._parse() + if self.import_index != -1: + self._add_formatted_imports() + self.length_change = len(self.out_lines) - self.original_length + while self.out_lines and self.out_lines[-1].strip() == "": + self.out_lines.pop(-1) + self.out_lines.append("") + self.output = self.line_separator.join(self.out_lines) + if self.config['atomic']: + try: + compile(self._strip_top_comments(self.out_lines, self.line_separator), self.file_path, 'exec', 0, 1) + except SyntaxError: + self.output = file_contents + self.incorrectly_sorted = True + try: + compile(self._strip_top_comments(self.in_lines, self.line_separator), self.file_path, 'exec', 0, 1) + print("ERROR: {0} isort would have introduced syntax errors, please report to the project!". + format(self.file_path)) + except SyntaxError: + print("ERROR: {0} File contains syntax errors.".format(self.file_path)) + + return + if check: + check_output = self.output + check_against = file_contents + if self.config['ignore_whitespace']: + check_output = check_output.replace(self.line_separator, "").replace(" ", "").replace("\x0c", "") + check_against = check_against.replace(self.line_separator, "").replace(" ", "").replace("\x0c", "") + + if check_output.strip() == check_against.strip(): + if self.config['verbose']: + print("SUCCESS: {0} Everything Looks Good!".format(self.file_path)) + return + + print("ERROR: {0} Imports are incorrectly sorted.".format(self.file_path)) + self.incorrectly_sorted = True + if show_diff or self.config['show_diff']: + self._show_diff(file_contents) + elif write_to_stdout: + if sys.version_info[0] < 3: + self.output = self.output.encode(self.file_encoding) + sys.stdout.write(self.output) + elif file_name and not check: + if self.output == file_contents: + return + + if ask_to_apply: + self._show_diff(file_contents) + answer = None + while answer not in ('yes', 'y', 'no', 'n', 'quit', 'q'): + answer = input("Apply suggested changes to '{0}' [y/n/q]? ".format(self.file_path)).lower() + if answer in ('no', 'n'): + return + if answer in ('quit', 'q'): + sys.exit(1) + with io.open(self.file_path, encoding=self.file_encoding, mode='w', newline='') as output_file: + if not self.config['quiet']: + print("Fixing {0}".format(self.file_path)) + output_file.write(self.output) + + @property + def correctly_sorted(self): + return not self.incorrectly_sorted + + def _show_diff(self, file_contents): + for line in unified_diff( + file_contents.splitlines(1), + self.output.splitlines(1), + fromfile=self.file_path + ':before', + tofile=self.file_path + ':after', + fromfiledate=str(datetime.fromtimestamp(os.path.getmtime(self.file_path)) + if self.file_path else datetime.now()), + tofiledate=str(datetime.now()) + ): + sys.stdout.write(line) + + @staticmethod + def _strip_top_comments(lines, line_separator): + """Strips # comments that exist at the top of the given lines""" + lines = copy.copy(lines) + while lines and lines[0].startswith("#"): + lines = lines[1:] + return line_separator.join(lines) + + def place_module(self, module_name): + """Tries to determine if a module is a python std import, third party import, or project code: + + if it can't determine - it assumes it is project code + + """ + return self.finder.find(module_name) + + def _get_line(self): + """Returns the current line from the file while incrementing the index.""" + line = self.in_lines[self.index] + self.index += 1 + return line + + @staticmethod + def _import_type(line): + """If the current line is an import line it will return its type (from or straight)""" + if "isort:skip" in line: + return + elif line.startswith('import '): + return "straight" + elif line.startswith('from '): + return "from" + + def _at_end(self): + """returns True if we are at the end of the file.""" + return self.index == self.number_of_lines + + @staticmethod + def _module_key(module_name, config, sub_imports=False, ignore_case=False, section_name=None): + match = re.match(r'^(\.+)\s*(.*)', module_name) + if match: + sep = ' ' if config['reverse_relative'] else '_' + module_name = sep.join(match.groups()) + + prefix = "" + if ignore_case: + module_name = str(module_name).lower() + else: + module_name = str(module_name) + + if sub_imports and config['order_by_type']: + if module_name.isupper() and len(module_name) > 1: + prefix = "A" + elif module_name[0:1].isupper(): + prefix = "B" + else: + prefix = "C" + if not config['case_sensitive']: + module_name = module_name.lower() + if section_name is None or 'length_sort_' + str(section_name).lower() not in config: + length_sort = config['length_sort'] + else: + length_sort = config['length_sort_' + str(section_name).lower()] + return "{0}{1}{2}".format(module_name in config['force_to_top'] and "A" or "B", prefix, + length_sort and (str(len(module_name)) + ":" + module_name) or module_name) + + def _add_comments(self, comments, original_string=""): + """ + Returns a string with comments added if ignore_comments is not set. + """ + + if not self.config['ignore_comments']: + return comments and "{0}{1} {2}".format(self._strip_comments(original_string)[0], + self.config['comment_prefix'], + "; ".join(comments)) or original_string + + return comments and self._strip_comments(original_string)[0] + + def _wrap(self, line): + """ + Returns an import wrapped to the specified line-length, if possible. + """ + wrap_mode = self.config['multi_line_output'] + if len(line) > self.config['line_length'] and wrap_mode != settings.WrapModes.NOQA: + line_without_comment = line + comment = None + if '#' in line: + line_without_comment, comment = line.split('#', 1) + for splitter in ("import ", ".", "as "): + exp = r"\b" + re.escape(splitter) + r"\b" + if re.search(exp, line_without_comment) and not line_without_comment.strip().startswith(splitter): + line_parts = re.split(exp, line_without_comment) + if comment: + line_parts[-1] = '{0}#{1}'.format(line_parts[-1], comment) + next_line = [] + while (len(line) + 2) > (self.config['wrap_length'] or self.config['line_length']) and line_parts: + next_line.append(line_parts.pop()) + line = splitter.join(line_parts) + if not line: + line = next_line.pop() + + cont_line = self._wrap(self.config['indent'] + splitter.join(next_line).lstrip()) + if self.config['use_parentheses']: + if splitter == "as ": + output = "{0}{1}{2}".format(line, splitter, cont_line.lstrip()) + else: + output = "{0}{1}({2}{3}{4}{5})".format( + line, splitter, self.line_separator, cont_line, + "," if self.config['include_trailing_comma'] else "", + self.line_separator if wrap_mode in (settings.WrapModes.VERTICAL_HANGING_INDENT, + settings.WrapModes.VERTICAL_GRID_GROUPED) + else "") + lines = output.split(self.line_separator) + if self.config['comment_prefix'] in lines[-1] and lines[-1].endswith(')'): + line, comment = lines[-1].split(self.config['comment_prefix'], 1) + lines[-1] = line + ')' + self.config['comment_prefix'] + comment[:-1] + return self.line_separator.join(lines) + return "{0}{1}\\{2}{3}".format(line, splitter, self.line_separator, cont_line) + elif len(line) > self.config['line_length'] and wrap_mode == settings.WrapModes.NOQA: + if "# NOQA" not in line: + return "{0}{1} NOQA".format(line, self.config['comment_prefix']) + + return line + + def _add_straight_imports(self, straight_modules, section, section_output): + for module in straight_modules: + if module in self.remove_imports: + continue + + if module in self.as_map: + import_definition = '' + if self.config['keep_direct_and_as_imports']: + import_definition = "import {0}\n".format(module) + import_definition += "import {0} as {1}".format(module, self.as_map[module]) + else: + import_definition = "import {0}".format(module) + + comments_above = self.comments['above']['straight'].pop(module, None) + if comments_above: + section_output.extend(comments_above) + section_output.append(self._add_comments(self.comments['straight'].get(module), import_definition)) + + def _add_from_imports(self, from_modules, section, section_output, ignore_case): + for module in from_modules: + if module in self.remove_imports: + continue + + import_start = "from {0} import ".format(module) + from_imports = list(self.imports[section]['from'][module]) + if not self.config['no_inline_sort'] or self.config['force_single_line']: + from_imports = nsorted(from_imports, key=lambda key: self._module_key(key, self.config, True, ignore_case, section_name=section)) + if self.remove_imports: + from_imports = [line for line in from_imports if not "{0}.{1}".format(module, line) in + self.remove_imports] + + sub_modules = ['{0}.{1}'.format(module, from_import) for from_import in from_imports] + as_imports = { + from_import: "{0} as {1}".format(from_import, self.as_map[sub_module]) + for from_import, sub_module in zip(from_imports, sub_modules) + if sub_module in self.as_map + } + if self.config['combine_as_imports'] and not ("*" in from_imports and self.config['combine_star']): + for from_import in copy.copy(from_imports): + if from_import in as_imports: + from_imports[from_imports.index(from_import)] = as_imports.pop(from_import) + + while from_imports: + comments = self.comments['from'].pop(module, ()) + if "*" in from_imports and self.config['combine_star']: + import_statement = self._wrap(self._add_comments(comments, "{0}*".format(import_start))) + from_imports = None + elif self.config['force_single_line']: + import_statements = [] + while from_imports: + from_import = from_imports.pop(0) + if from_import in as_imports: + from_comments = self.comments['straight'].get('{}.{}'.format(module, from_import)) + import_statements.append(self._add_comments(from_comments, + self._wrap(import_start + as_imports[from_import]))) + continue + single_import_line = self._add_comments(comments, import_start + from_import) + comment = self.comments['nested'].get(module, {}).pop(from_import, None) + if comment: + single_import_line += "{0} {1}".format(comments and ";" or self.config['comment_prefix'], + comment) + import_statements.append(self._wrap(single_import_line)) + comments = None + import_statement = self.line_separator.join(import_statements) + else: + while from_imports and from_imports[0] in as_imports: + from_import = from_imports.pop(0) + from_comments = self.comments['straight'].get('{}.{}'.format(module, from_import)) + above_comments = self.comments['above']['from'].pop(module, None) + if above_comments: + section_output.extend(above_comments) + + section_output.append(self._add_comments(from_comments, + self._wrap(import_start + as_imports[from_import]))) + + star_import = False + if "*" in from_imports: + section_output.append(self._add_comments(comments, "{0}*".format(import_start))) + from_imports.remove('*') + star_import = True + comments = None + + for from_import in copy.copy(from_imports): + if from_import in as_imports: + continue + comment = self.comments['nested'].get(module, {}).pop(from_import, None) + if comment: + single_import_line = self._add_comments(comments, import_start + from_import) + single_import_line += "{0} {1}".format(comments and ";" or self.config['comment_prefix'], + comment) + above_comments = self.comments['above']['from'].pop(module, None) + if above_comments: + section_output.extend(above_comments) + section_output.append(self._wrap(single_import_line)) + from_imports.remove(from_import) + comments = None + + from_import_section = [] + while from_imports and from_imports[0] not in as_imports: + from_import_section.append(from_imports.pop(0)) + if star_import: + import_statement = import_start + (", ").join(from_import_section) + else: + import_statement = self._add_comments(comments, import_start + (", ").join(from_import_section)) + if not from_import_section: + import_statement = "" + + do_multiline_reformat = False + + force_grid_wrap = self.config['force_grid_wrap'] + if force_grid_wrap and len(from_import_section) >= force_grid_wrap: + do_multiline_reformat = True + + if len(import_statement) > self.config['line_length'] and len(from_import_section) > 1: + do_multiline_reformat = True + + # If line too long AND have imports AND we are NOT using GRID or VERTICAL wrap modes + if (len(import_statement) > self.config['line_length'] and len(from_import_section) > 0 and + self.config['multi_line_output'] not in (1, 0)): + do_multiline_reformat = True + + if do_multiline_reformat: + import_statement = self._multi_line_reformat(import_start, from_import_section, comments) + if self.config['multi_line_output'] == 0: + self.config['multi_line_output'] = 4 + try: + other_import_statement = self._multi_line_reformat(import_start, from_import_section, comments) + if (max(len(x) + for x in import_statement.split('\n')) > self.config['line_length']): + import_statement = other_import_statement + finally: + self.config['multi_line_output'] = 0 + if not do_multiline_reformat and len(import_statement) > self.config['line_length']: + import_statement = self._wrap(import_statement) + + if import_statement: + above_comments = self.comments['above']['from'].pop(module, None) + if above_comments: + section_output.extend(above_comments) + section_output.append(import_statement) + + def _multi_line_reformat(self, import_start, from_imports, comments): + output_mode = settings.WrapModes._fields[self.config['multi_line_output']].lower() + formatter = getattr(self, "_output_" + output_mode, self._output_grid) + dynamic_indent = " " * (len(import_start) + 1) + indent = self.config['indent'] + line_length = self.config['wrap_length'] or self.config['line_length'] + import_statement = formatter(import_start, copy.copy(from_imports), + dynamic_indent, indent, line_length, comments) + if self.config['balanced_wrapping']: + lines = import_statement.split(self.line_separator) + line_count = len(lines) + if len(lines) > 1: + minimum_length = min(len(line) for line in lines[:-1]) + else: + minimum_length = 0 + new_import_statement = import_statement + while (len(lines[-1]) < minimum_length and + len(lines) == line_count and line_length > 10): + import_statement = new_import_statement + line_length -= 1 + new_import_statement = formatter(import_start, copy.copy(from_imports), + dynamic_indent, indent, line_length, comments) + lines = new_import_statement.split(self.line_separator) + if import_statement.count(self.line_separator) == 0: + return self._wrap(import_statement) + return import_statement + + def _add_formatted_imports(self): + """Adds the imports back to the file. + + (at the index of the first import) sorted alphabetically and split between groups + + """ + sort_ignore_case = self.config['force_alphabetical_sort_within_sections'] + sections = itertools.chain(self.sections, self.config['forced_separate']) + + if self.config['no_sections']: + self.imports['no_sections'] = {'straight': [], 'from': {}} + for section in sections: + self.imports['no_sections']['straight'].extend(self.imports[section].get('straight', [])) + self.imports['no_sections']['from'].update(self.imports[section].get('from', {})) + sections = ('no_sections', ) + + output = [] + pending_lines_before = False + for section in sections: + straight_modules = self.imports[section]['straight'] + straight_modules = nsorted(straight_modules, key=lambda key: self._module_key(key, self.config, section_name=section)) + from_modules = self.imports[section]['from'] + from_modules = nsorted(from_modules, key=lambda key: self._module_key(key, self.config, section_name=section)) + + section_output = [] + if self.config['from_first']: + self._add_from_imports(from_modules, section, section_output, sort_ignore_case) + if self.config['lines_between_types'] and from_modules and straight_modules: + section_output.extend([''] * self.config['lines_between_types']) + self._add_straight_imports(straight_modules, section, section_output) + else: + self._add_straight_imports(straight_modules, section, section_output) + if self.config['lines_between_types'] and from_modules and straight_modules: + section_output.extend([''] * self.config['lines_between_types']) + self._add_from_imports(from_modules, section, section_output, sort_ignore_case) + + if self.config['force_sort_within_sections']: + def by_module(line): + section = 'B' + if line.startswith('#'): + return 'AA' + + line = re.sub('^from ', '', line) + line = re.sub('^import ', '', line) + if line.split(' ')[0] in self.config['force_to_top']: + section = 'A' + if not self.config['order_by_type']: + line = line.lower() + return '{0}{1}'.format(section, line) + section_output = nsorted(section_output, key=by_module) + + section_name = section + no_lines_before = section_name in self.config['no_lines_before'] + + if section_output: + if section_name in self.place_imports: + self.place_imports[section_name] = section_output + continue + + section_title = self.config.get('import_heading_' + str(section_name).lower(), '') + if section_title: + section_comment = "# {0}".format(section_title) + if section_comment not in self.out_lines[0:1] and section_comment not in self.in_lines[0:1]: + section_output.insert(0, section_comment) + + if pending_lines_before or not no_lines_before: + output += ([''] * self.config['lines_between_sections']) + + output += section_output + + pending_lines_before = False + else: + pending_lines_before = pending_lines_before or not no_lines_before + + while output and output[-1].strip() == '': + output.pop() + while output and output[0].strip() == '': + output.pop(0) + + output_at = 0 + if self.import_index < self.original_length: + output_at = self.import_index + elif self._first_comment_index_end != -1 and self._first_comment_index_start <= 2: + output_at = self._first_comment_index_end + self.out_lines[output_at:0] = output + + imports_tail = output_at + len(output) + while [character.strip() for character in self.out_lines[imports_tail: imports_tail + 1]] == [""]: + self.out_lines.pop(imports_tail) + + if len(self.out_lines) > imports_tail: + next_construct = "" + self._in_quote = False + tail = self.out_lines[imports_tail:] + + for index, line in enumerate(tail): + in_quote = self._in_quote + if not self._skip_line(line) and line.strip(): + if line.strip().startswith("#") and len(tail) > (index + 1) and tail[index + 1].strip(): + continue + next_construct = line + break + elif not in_quote: + parts = line.split() + if len(parts) >= 3 and parts[1] == '=' and "'" not in parts[0] and '"' not in parts[0]: + next_construct = line + break + + if self.config['lines_after_imports'] != -1: + self.out_lines[imports_tail:0] = ["" for line in range(self.config['lines_after_imports'])] + elif self.extension != "pyi" and (next_construct.startswith("def ") or + next_construct.startswith("class ") or + next_construct.startswith("@") or + next_construct.startswith("async def")): + self.out_lines[imports_tail:0] = ["", ""] + else: + self.out_lines[imports_tail:0] = [""] + + if self.place_imports: + new_out_lines = [] + for index, line in enumerate(self.out_lines): + new_out_lines.append(line) + if line in self.import_placements: + new_out_lines.extend(self.place_imports[self.import_placements[line]]) + if len(self.out_lines) <= index or self.out_lines[index + 1].strip() != "": + new_out_lines.append("") + self.out_lines = new_out_lines + + def _output_grid(self, statement, imports, white_space, indent, line_length, comments): + statement += "(" + imports.pop(0) + while imports: + next_import = imports.pop(0) + next_statement = self._add_comments(comments, statement + ", " + next_import) + if len(next_statement.split(self.line_separator)[-1]) + 1 > line_length: + lines = ['{0}{1}'.format(white_space, next_import.split(" ")[0])] + for part in next_import.split(" ")[1:]: + new_line = '{0} {1}'.format(lines[-1], part) + if len(new_line) + 1 > line_length: + lines.append('{0}{1}'.format(white_space, part)) + else: + lines[-1] = new_line + next_import = self.line_separator.join(lines) + statement = (self._add_comments(comments, "{0},".format(statement)) + + "{0}{1}".format(self.line_separator, next_import)) + comments = None + else: + statement += ", " + next_import + return statement + ("," if self.config['include_trailing_comma'] else "") + ")" + + def _output_vertical(self, statement, imports, white_space, indent, line_length, comments): + first_import = self._add_comments(comments, imports.pop(0) + ",") + self.line_separator + white_space + return "{0}({1}{2}{3})".format( + statement, + first_import, + ("," + self.line_separator + white_space).join(imports), + "," if self.config['include_trailing_comma'] else "", + ) + + def _output_hanging_indent(self, statement, imports, white_space, indent, line_length, comments): + statement += imports.pop(0) + while imports: + next_import = imports.pop(0) + next_statement = self._add_comments(comments, statement + ", " + next_import) + if len(next_statement.split(self.line_separator)[-1]) + 3 > line_length: + next_statement = (self._add_comments(comments, "{0}, \\".format(statement)) + + "{0}{1}{2}".format(self.line_separator, indent, next_import)) + comments = None + statement = next_statement + return statement + + def _output_vertical_hanging_indent(self, statement, imports, white_space, indent, line_length, comments): + return "{0}({1}{2}{3}{4}{5}{2})".format( + statement, + self._add_comments(comments), + self.line_separator, + indent, + ("," + self.line_separator + indent).join(imports), + "," if self.config['include_trailing_comma'] else "", + ) + + def _output_vertical_grid_common(self, statement, imports, white_space, indent, line_length, comments, + need_trailing_char): + statement += self._add_comments(comments, "(") + self.line_separator + indent + imports.pop(0) + while imports: + next_import = imports.pop(0) + next_statement = "{0}, {1}".format(statement, next_import) + current_line_length = len(next_statement.split(self.line_separator)[-1]) + if imports or need_trailing_char: + # If we have more imports we need to account for a comma after this import + # We might also need to account for a closing ) we're going to add. + current_line_length += 1 + if current_line_length > line_length: + next_statement = "{0},{1}{2}{3}".format(statement, self.line_separator, indent, next_import) + statement = next_statement + if self.config['include_trailing_comma']: + statement += ',' + return statement + + def _output_vertical_grid(self, statement, imports, white_space, indent, line_length, comments): + return self._output_vertical_grid_common(statement, imports, white_space, indent, line_length, comments, + True) + ")" + + def _output_vertical_grid_grouped(self, statement, imports, white_space, indent, line_length, comments): + return self._output_vertical_grid_common(statement, imports, white_space, indent, line_length, comments, + True) + self.line_separator + ")" + + def _output_vertical_grid_grouped_no_comma(self, statement, imports, white_space, indent, line_length, comments): + return self._output_vertical_grid_common(statement, imports, white_space, indent, line_length, comments, + False) + self.line_separator + ")" + + def _output_noqa(self, statement, imports, white_space, indent, line_length, comments): + retval = '{0}{1}'.format(statement, ', '.join(imports)) + comment_str = ' '.join(comments) + if comments: + if len(retval) + len(self.config['comment_prefix']) + 1 + len(comment_str) <= line_length: + return '{0}{1} {2}'.format(retval, self.config['comment_prefix'], comment_str) + else: + if len(retval) <= line_length: + return retval + if comments: + if "NOQA" in comments: + return '{0}{1} {2}'.format(retval, self.config['comment_prefix'], comment_str) + else: + return '{0}{1} NOQA {2}'.format(retval, self.config['comment_prefix'], comment_str) + else: + return '{0}{1} NOQA'.format(retval, self.config['comment_prefix']) + + @staticmethod + def _strip_comments(line, comments=None): + """Removes comments from import line.""" + if comments is None: + comments = [] + + new_comments = False + comment_start = line.find("#") + if comment_start != -1: + comments.append(line[comment_start + 1:].strip()) + new_comments = True + line = line[:comment_start] + + return line, comments, new_comments + + @staticmethod + def _format_simplified(import_line): + import_line = import_line.strip() + if import_line.startswith("from "): + import_line = import_line.replace("from ", "") + import_line = import_line.replace(" import ", ".") + elif import_line.startswith("import "): + import_line = import_line.replace("import ", "") + + return import_line + + @staticmethod + def _format_natural(import_line): + import_line = import_line.strip() + if not import_line.startswith("from ") and not import_line.startswith("import "): + if "." not in import_line: + return "import {0}".format(import_line) + parts = import_line.split(".") + end = parts.pop(-1) + return "from {0} import {1}".format(".".join(parts), end) + + return import_line + + def _skip_line(self, line): + skip_line = self._in_quote + if self.index == 1 and line.startswith("#"): + self._in_top_comment = True + return True + elif self._in_top_comment: + if not line.startswith("#") or line in self._section_comments: + self._in_top_comment = False + self._first_comment_index_end = self.index - 1 + + if '"' in line or "'" in line: + index = 0 + if self._first_comment_index_start == -1 and (line.startswith('"') or line.startswith("'")): + self._first_comment_index_start = self.index + while index < len(line): + if line[index] == "\\": + index += 1 + elif self._in_quote: + if line[index:index + len(self._in_quote)] == self._in_quote: + self._in_quote = False + if self._first_comment_index_end < self._first_comment_index_start: + self._first_comment_index_end = self.index + elif line[index] in ("'", '"'): + long_quote = line[index:index + 3] + if long_quote in ('"""', "'''"): + self._in_quote = long_quote + index += 2 + else: + self._in_quote = line[index] + elif line[index] == "#": + break + index += 1 + + return skip_line or self._in_quote or self._in_top_comment + + def _strip_syntax(self, import_string): + import_string = import_string.replace("_import", "[[i]]") + for remove_syntax in ['\\', '(', ')', ',']: + import_string = import_string.replace(remove_syntax, " ") + import_list = import_string.split() + for key in ('from', 'import'): + if key in import_list: + import_list.remove(key) + import_string = ' '.join(import_list) + import_string = import_string.replace("[[i]]", "_import") + return import_string.replace("{ ", "{|").replace(" }", "|}") + + def _parse(self): + """Parses a python file taking out and categorizing imports.""" + self._in_quote = False + self._in_top_comment = False + while not self._at_end(): + raw_line = line = self._get_line() + line = line.replace("from.import ", "from . import ") + line = line.replace("\t", " ").replace('import*', 'import *') + line = line.replace(" .import ", " . import ") + statement_index = self.index + skip_line = self._skip_line(line) + + if line in self._section_comments and not skip_line: + if self.import_index == -1: + self.import_index = self.index - 1 + continue + + if "isort:imports-" in line and line.startswith("#"): + section = line.split("isort:imports-")[-1].split()[0].upper() + self.place_imports[section] = [] + self.import_placements[line] = section + + if ";" in line: + for part in (part.strip() for part in line.split(";")): + if part and not part.startswith("from ") and not part.startswith("import "): + skip_line = True + + import_type = self._import_type(line) + if not import_type or skip_line: + self.out_lines.append(raw_line) + continue + + for line in (line.strip() for line in line.split(";")): + import_type = self._import_type(line) + if not import_type: + self.out_lines.append(line) + continue + + if self.import_index == -1: + self.import_index = self.index - 1 + nested_comments = {} + import_string, comments, new_comments = self._strip_comments(line) + stripped_line = [part for part in self._strip_syntax(import_string).strip().split(" ") if part] + if import_type == "from" and len(stripped_line) == 2 and stripped_line[1] != "*" and new_comments: + nested_comments[stripped_line[-1]] = comments[0] + + if "(" in line.split("#")[0] and not self._at_end(): + while not line.strip().endswith(")") and not self._at_end(): + line, comments, new_comments = self._strip_comments(self._get_line(), comments) + stripped_line = self._strip_syntax(line).strip() + if import_type == "from" and stripped_line and " " not in stripped_line and new_comments: + nested_comments[stripped_line] = comments[-1] + import_string += self.line_separator + line + else: + while line.strip().endswith("\\"): + line, comments, new_comments = self._strip_comments(self._get_line(), comments) + + # Still need to check for parentheses after an escaped line + if "(" in line.split("#")[0] and ")" not in line.split("#")[0] and not self._at_end(): + stripped_line = self._strip_syntax(line).strip() + if import_type == "from" and stripped_line and " " not in stripped_line and new_comments: + nested_comments[stripped_line] = comments[-1] + import_string += self.line_separator + line + + while not line.strip().endswith(")") and not self._at_end(): + line, comments, new_comments = self._strip_comments(self._get_line(), comments) + stripped_line = self._strip_syntax(line).strip() + if import_type == "from" and stripped_line and " " not in stripped_line and new_comments: + nested_comments[stripped_line] = comments[-1] + import_string += self.line_separator + line + + stripped_line = self._strip_syntax(line).strip() + if import_type == "from" and stripped_line and " " not in stripped_line and new_comments: + nested_comments[stripped_line] = comments[-1] + if import_string.strip().endswith(" import") or line.strip().startswith("import "): + import_string += self.line_separator + line + else: + import_string = import_string.rstrip().rstrip("\\") + " " + line.lstrip() + + if import_type == "from": + import_string = import_string.replace("import(", "import (") + parts = import_string.split(" import ") + from_import = parts[0].split(" ") + import_string = " import ".join([from_import[0] + " " + "".join(from_import[1:])] + parts[1:]) + + imports = [item.replace("{|", "{ ").replace("|}", " }") for item in + self._strip_syntax(import_string).split()] + if "as" in imports and (imports.index('as') + 1) < len(imports): + while "as" in imports: + index = imports.index('as') + if import_type == "from": + module = imports[0] + "." + imports[index - 1] + self.as_map[module] = imports[index + 1] + else: + module = imports[index - 1] + self.as_map[module] = imports[index + 1] + if not self.config['combine_as_imports']: + self.comments['straight'][module] = comments + comments = [] + del imports[index:index + 2] + if import_type == "from": + import_from = imports.pop(0) + placed_module = self.place_module(import_from) + if self.config['verbose']: + print("from-type place_module for %s returned %s" % (import_from, placed_module)) + if placed_module == '': + print( + "WARNING: could not place module {0} of line {1} --" + " Do you need to define a default section?".format(import_from, line) + ) + root = self.imports[placed_module][import_type] + for import_name in imports: + associated_comment = nested_comments.get(import_name) + if associated_comment: + self.comments['nested'].setdefault(import_from, {})[import_name] = associated_comment + comments.pop(comments.index(associated_comment)) + if comments: + self.comments['from'].setdefault(import_from, []).extend(comments) + + if len(self.out_lines) > max(self.import_index, self._first_comment_index_end + 1, 1) - 1: + last = self.out_lines and self.out_lines[-1].rstrip() or "" + while (last.startswith("#") and not last.endswith('"""') and not last.endswith("'''") and + 'isort:imports-' not in last): + self.comments['above']['from'].setdefault(import_from, []).insert(0, self.out_lines.pop(-1)) + if len(self.out_lines) > max(self.import_index - 1, self._first_comment_index_end + 1, 1) - 1: + last = self.out_lines[-1].rstrip() + else: + last = "" + if statement_index - 1 == self.import_index: + self.import_index -= len(self.comments['above']['from'].get(import_from, [])) + + if import_from not in root: + root[import_from] = OrderedDict() + root[import_from].update((module, None) for module in imports) + else: + for module in imports: + if comments: + self.comments['straight'][module] = comments + comments = None + + if len(self.out_lines) > max(self.import_index, self._first_comment_index_end + 1, 1) - 1: + + last = self.out_lines and self.out_lines[-1].rstrip() or "" + while (last.startswith("#") and not last.endswith('"""') and not last.endswith("'''") and + 'isort:imports-' not in last): + self.comments['above']['straight'].setdefault(module, []).insert(0, + self.out_lines.pop(-1)) + if len(self.out_lines) > 0 and len(self.out_lines) != self._first_comment_index_end: + last = self.out_lines[-1].rstrip() + else: + last = "" + if self.index - 1 == self.import_index: + self.import_index -= len(self.comments['above']['straight'].get(module, [])) + placed_module = self.place_module(module) + if self.config['verbose']: + print("else-type place_module for %s returned %s" % (module, placed_module)) + if placed_module == '': + print( + "WARNING: could not place module {0} of line {1} --" + " Do you need to define a default section?".format(import_from, line) + ) + self.imports[placed_module][import_type][module] = None + + +def coding_check(lines, default='utf-8'): + + # see https://www.python.org/dev/peps/pep-0263/ + pattern = re.compile(br'coding[:=]\s*([-\w.]+)') + + for line_number, line in enumerate(lines, 1): + groups = re.findall(pattern, line) + if groups: + return groups[0].decode('ascii') + if line_number > 2: + break + + return default diff --git a/venv/Lib/site-packages/isort/main.py b/venv/Lib/site-packages/isort/main.py new file mode 100644 index 0000000..fe36d11 --- /dev/null +++ b/venv/Lib/site-packages/isort/main.py @@ -0,0 +1,401 @@ +''' Tool for sorting imports alphabetically, and automatically separated into sections. + +Copyright (C) 2013 Timothy Edmund Crosley + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and +to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or +substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF +CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +''' +from __future__ import absolute_import, division, print_function, unicode_literals + +import argparse +import functools +import glob +import os +import re +import sys + +import setuptools + +from isort import SortImports, __version__ +from isort.settings import DEFAULT_SECTIONS, WrapModes, default, from_path, should_skip + +INTRO = r""" +/#######################################################################\ + + `sMMy` + .yyyy- ` + ##soos## ./o. + ` ``..-..` ``...`.`` ` ```` ``-ssso``` + .s:-y- .+osssssso/. ./ossss+:so+:` :+o-`/osso:+sssssssso/ + .s::y- osss+.``.`` -ssss+-.`-ossso` ssssso/::..::+ssss:::. + .s::y- /ssss+//:-.` `ssss+ `ssss+ sssso` :ssss` + .s::y- `-/+oossssso/ `ssss/ sssso ssss/ :ssss` + .y-/y- ````:ssss` ossso. :ssss: ssss/ :ssss. + `/so:` `-//::/osss+ `+ssss+-/ossso: /sso- `osssso/. + \/ `-/oooo++/- .:/++:/++/-` .. `://++/. + + + isort your Python imports for you so you don't have to + + VERSION {0} + +\########################################################################/ +""".format(__version__) + +shebang_re = re.compile(br'^#!.*\bpython[23w]?\b') + + +def is_python_file(path): + _root, ext = os.path.splitext(path) + if ext in ('.py', '.pyi'): + return True + if ext in ('.pex', ): + return False + + # Skip editor backup files. + if path.endswith('~'): + return False + + try: + with open(path, 'rb') as fp: + line = fp.readline(100) + except IOError: + return False + else: + return bool(shebang_re.match(line)) + + +class SortAttempt(object): + def __init__(self, incorrectly_sorted, skipped): + self.incorrectly_sorted = incorrectly_sorted + self.skipped = skipped + + +def sort_imports(file_name, **arguments): + try: + result = SortImports(file_name, **arguments) + return SortAttempt(result.incorrectly_sorted, result.skipped) + except IOError as e: + print("WARNING: Unable to parse file {0} due to {1}".format(file_name, e)) + return None + + +def iter_source_code(paths, config, skipped): + """Iterate over all Python source files defined in paths.""" + if 'not_skip' in config: + config['skip'] = list(set(config['skip']).difference(config['not_skip'])) + + for path in paths: + if os.path.isdir(path): + for dirpath, dirnames, filenames in os.walk(path, topdown=True, followlinks=True): + for dirname in list(dirnames): + if should_skip(dirname, config, dirpath): + skipped.append(dirname) + dirnames.remove(dirname) + for filename in filenames: + filepath = os.path.join(dirpath, filename) + if is_python_file(filepath): + relative_file = os.path.relpath(filepath, path) + if should_skip(relative_file, config, path): + skipped.append(filename) + else: + yield filepath + else: + yield path + + +class ISortCommand(setuptools.Command): + """The :class:`ISortCommand` class is used by setuptools to perform + imports checks on registered modules. + """ + + description = "Run isort on modules registered in setuptools" + user_options = [] + + def initialize_options(self): + default_settings = default.copy() + for key, value in default_settings.items(): + setattr(self, key, value) + + def finalize_options(self): + "Get options from config files." + self.arguments = {} + computed_settings = from_path(os.getcwd()) + for key, value in computed_settings.items(): + self.arguments[key] = value + + def distribution_files(self): + """Find distribution packages.""" + # This is verbatim from flake8 + if self.distribution.packages: + package_dirs = self.distribution.package_dir or {} + for package in self.distribution.packages: + pkg_dir = package + if package in package_dirs: + pkg_dir = package_dirs[package] + elif '' in package_dirs: + pkg_dir = package_dirs[''] + os.path.sep + pkg_dir + yield pkg_dir.replace('.', os.path.sep) + + if self.distribution.py_modules: + for filename in self.distribution.py_modules: + yield "%s.py" % filename + # Don't miss the setup.py file itself + yield "setup.py" + + def run(self): + arguments = self.arguments + wrong_sorted_files = False + arguments['check'] = True + for path in self.distribution_files(): + for python_file in glob.iglob(os.path.join(path, '*.py')): + try: + incorrectly_sorted = SortImports(python_file, **arguments).incorrectly_sorted + if incorrectly_sorted: + wrong_sorted_files = True + except IOError as e: + print("WARNING: Unable to parse file {0} due to {1}".format(python_file, e)) + if wrong_sorted_files: + sys.exit(1) + + +def parse_args(argv=None): + parser = argparse.ArgumentParser(description='Sort Python import definitions alphabetically ' + 'within logical sections. Run with no arguments to run ' + 'interactively. Run with `-` as the first argument to read from ' + 'stdin. Otherwise provide a list of files to sort.') + inline_args_group = parser.add_mutually_exclusive_group() + parser.add_argument('-a', '--add-import', dest='add_imports', action='append', + help='Adds the specified import line to all files, ' + 'automatically determining correct placement.') + parser.add_argument('-ac', '--atomic', dest='atomic', action='store_true', + help="Ensures the output doesn't save if the resulting file contains syntax errors.") + parser.add_argument('-af', '--force-adds', dest='force_adds', action='store_true', + help='Forces import adds even if the original file is empty.') + parser.add_argument('-b', '--builtin', dest='known_standard_library', action='append', + help='Force sortImports to recognize a module as part of the python standard library.') + parser.add_argument('-c', '--check-only', action='store_true', dest="check", + help='Checks the file for unsorted / unformatted imports and prints them to the ' + 'command line without modifying the file.') + parser.add_argument('-ca', '--combine-as', dest='combine_as_imports', action='store_true', + help="Combines as imports on the same line.") + parser.add_argument('-cs', '--combine-star', dest='combine_star', action='store_true', + help="Ensures that if a star import is present, nothing else is imported from that namespace.") + parser.add_argument('-d', '--stdout', help='Force resulting output to stdout, instead of in-place.', + dest='write_to_stdout', action='store_true') + parser.add_argument('-df', '--diff', dest='show_diff', action='store_true', + help="Prints a diff of all the changes isort would make to a file, instead of " + "changing it in place") + parser.add_argument('-ds', '--no-sections', help='Put all imports into the same section bucket', dest='no_sections', + action='store_true') + parser.add_argument('-dt', '--dont-order-by-type', dest='dont_order_by_type', + action='store_true', help='Only order imports alphabetically, do not attempt type ordering') + parser.add_argument('-e', '--balanced', dest='balanced_wrapping', action='store_true', + help='Balances wrapping to produce the most consistent line length possible') + parser.add_argument('-f', '--future', dest='known_future_library', action='append', + help='Force sortImports to recognize a module as part of the future compatibility libraries.') + parser.add_argument('-fas', '--force-alphabetical-sort', action='store_true', dest="force_alphabetical_sort", + help='Force all imports to be sorted as a single section') + parser.add_argument('-fass', '--force-alphabetical-sort-within-sections', action='store_true', + dest="force_alphabetical_sort", help='Force all imports to be sorted alphabetically within a ' + 'section') + parser.add_argument('-ff', '--from-first', dest='from_first', + help="Switches the typical ordering preference, showing from imports first then straight ones.") + parser.add_argument('-fgw', '--force-grid-wrap', nargs='?', const=2, type=int, dest="force_grid_wrap", + help='Force number of from imports (defaults to 2) to be grid wrapped regardless of line ' + 'length') + parser.add_argument('-fss', '--force-sort-within-sections', action='store_true', dest="force_sort_within_sections", + help='Force imports to be sorted by module, independent of import_type') + parser.add_argument('-i', '--indent', help='String to place for indents defaults to " " (4 spaces).', + dest='indent', type=str) + parser.add_argument('-j', '--jobs', help='Number of files to process in parallel.', + dest='jobs', type=int) + parser.add_argument('-k', '--keep-direct-and-as', dest='keep_direct_and_as_imports', action='store_true', + help="Turns off default behavior that removes direct imports when as imports exist.") + parser.add_argument('-l', '--lines', help='[Deprecated] The max length of an import line (used for wrapping ' + 'long imports).', + dest='line_length', type=int) + parser.add_argument('-lai', '--lines-after-imports', dest='lines_after_imports', type=int) + parser.add_argument('-lbt', '--lines-between-types', dest='lines_between_types', type=int) + parser.add_argument('-le', '--line-ending', dest='line_ending', + help="Forces line endings to the specified value. If not set, values will be guessed per-file.") + parser.add_argument('-ls', '--length-sort', help='Sort imports by their string length.', + dest='length_sort', action='store_true') + parser.add_argument('-m', '--multi-line', dest='multi_line_output', type=int, choices=range(len(WrapModes)), + help='Multi line output (0-grid, 1-vertical, 2-hanging, 3-vert-hanging, 4-vert-grid, ' + '5-vert-grid-grouped, 6-vert-grid-grouped-no-comma).') + inline_args_group.add_argument('-nis', '--no-inline-sort', dest='no_inline_sort', action='store_true', + help='Leaves `from` imports with multiple imports \'as-is\' (e.g. `from foo import a, c ,b`).') + parser.add_argument('-nlb', '--no-lines-before', help='Sections which should not be split with previous by empty lines', + dest='no_lines_before', action='append') + parser.add_argument('-ns', '--dont-skip', help='Files that sort imports should never skip over.', + dest='not_skip', action='append') + parser.add_argument('-o', '--thirdparty', dest='known_third_party', action='append', + help='Force sortImports to recognize a module as being part of a third party library.') + parser.add_argument('-ot', '--order-by-type', dest='order_by_type', + action='store_true', help='Order imports by type in addition to alphabetically') + parser.add_argument('-p', '--project', dest='known_first_party', action='append', + help='Force sortImports to recognize a module as being part of the current python project.') + parser.add_argument('-q', '--quiet', action='store_true', dest="quiet", + help='Shows extra quiet output, only errors are outputted.') + parser.add_argument('-r', dest='ambiguous_r_flag', action='store_true') + parser.add_argument('-rm', '--remove-import', dest='remove_imports', action='append', + help='Removes the specified import from all files.') + parser.add_argument('-rr', '--reverse-relative', dest='reverse_relative', action='store_true', + help='Reverse order of relative imports.') + parser.add_argument('-rc', '--recursive', dest='recursive', action='store_true', + help='Recursively look for Python files of which to sort imports') + parser.add_argument('-s', '--skip', help='Files that sort imports should skip over. If you want to skip multiple ' + 'files you should specify twice: --skip file1 --skip file2.', dest='skip', action='append') + parser.add_argument('-sd', '--section-default', dest='default_section', + help='Sets the default section for imports (by default FIRSTPARTY) options: ' + + str(DEFAULT_SECTIONS)) + parser.add_argument('-sg', '--skip-glob', help='Files that sort imports should skip over.', dest='skip_glob', + action='append') + inline_args_group.add_argument('-sl', '--force-single-line-imports', dest='force_single_line', action='store_true', + help='Forces all from imports to appear on their own line') + parser.add_argument('-sp', '--settings-path', dest="settings_path", + help='Explicitly set the settings path instead of auto determining based on file location.') + parser.add_argument('-t', '--top', help='Force specific imports to the top of their appropriate section.', + dest='force_to_top', action='append') + parser.add_argument('-tc', '--trailing-comma', dest='include_trailing_comma', action='store_true', + help='Includes a trailing comma on multi line imports that include parentheses.') + parser.add_argument('-up', '--use-parentheses', dest='use_parentheses', action='store_true', + help='Use parenthesis for line continuation on length limit instead of slashes.') + parser.add_argument('-v', '--version', action='store_true', dest='show_version') + parser.add_argument('-vb', '--verbose', action='store_true', dest="verbose", + help='Shows verbose output, such as when files are skipped or when a check is successful.') + parser.add_argument('--virtual-env', dest='virtual_env', + help='Virtual environment to use for determining whether a package is third-party') + parser.add_argument('--conda-env', dest='conda_env', + help='Conda environment to use for determining whether a package is third-party') + parser.add_argument('-vn', '--version-number', action='version', version=__version__, + help='Returns just the current version number without the logo') + parser.add_argument('-w', '--line-width', help='The max length of an import line (used for wrapping long imports).', + dest='line_length', type=int) + parser.add_argument('-wl', '--wrap-length', dest='wrap_length', + help="Specifies how long lines that are wrapped should be, if not set line_length is used.") + parser.add_argument('-ws', '--ignore-whitespace', action='store_true', dest="ignore_whitespace", + help='Tells isort to ignore whitespace differences when --check-only is being used.') + parser.add_argument('-y', '--apply', dest='apply', action='store_true', + help='Tells isort to apply changes recursively without asking') + parser.add_argument('--unsafe', dest='unsafe', action='store_true', + help='Tells isort to look for files in standard library directories, etc. ' + 'where it may not be safe to operate in') + parser.add_argument('--case-sensitive', dest='case_sensitive', action='store_true', + help='Tells isort to include casing when sorting module names') + parser.add_argument('--filter-files', dest='filter_files', action='store_true', + help='Tells isort to filter files even when they are explicitly passed in as part of the command') + parser.add_argument('files', nargs='*', help='One or more Python source files that need their imports sorted.') + + arguments = {key: value for key, value in vars(parser.parse_args(argv)).items() if value} + if 'dont_order_by_type' in arguments: + arguments['order_by_type'] = False + if arguments.pop('unsafe', False): + arguments['safety_excludes'] = False + return arguments + + +def main(argv=None): + arguments = parse_args(argv) + if arguments.get('show_version'): + print(INTRO) + return + + if arguments.get('ambiguous_r_flag'): + print('ERROR: Deprecated -r flag set. This flag has been replaced with -rm to remove ambiguity between it and ' + '-rc for recursive') + sys.exit(1) + + arguments['check_skip'] = False + if 'settings_path' in arguments: + sp = arguments['settings_path'] + arguments['settings_path'] = os.path.abspath(sp) if os.path.isdir(sp) else os.path.dirname(os.path.abspath(sp)) + if not os.path.isdir(arguments['settings_path']): + print("WARNING: settings_path dir does not exist: {0}".format(arguments['settings_path'])) + + if 'virtual_env' in arguments: + venv = arguments['virtual_env'] + arguments['virtual_env'] = os.path.abspath(venv) + if not os.path.isdir(arguments['virtual_env']): + print("WARNING: virtual_env dir does not exist: {0}".format(arguments['virtual_env'])) + + file_names = arguments.pop('files', []) + if file_names == ['-']: + try: + # python 3 + file_ = sys.stdin.buffer + except AttributeError: + # python 2 + file_ = sys.stdin + SortImports(file_=file_, write_to_stdout=True, **arguments) + else: + if not file_names: + file_names = ['.'] + arguments['recursive'] = True + if not arguments.get('apply', False): + arguments['ask_to_apply'] = True + + config = from_path(arguments.get('settings_path', '') or os.path.abspath(file_names[0]) or os.getcwd()).copy() + config.update(arguments) + wrong_sorted_files = False + skipped = [] + + if config.get('filter_files'): + filtered_files = [] + for file_name in file_names: + if should_skip(file_name, config): + skipped.append(file_name) + else: + filtered_files.append(file_name) + file_names = filtered_files + + if arguments.get('recursive', False): + file_names = iter_source_code(file_names, config, skipped) + num_skipped = 0 + if config['verbose'] or config.get('show_logo', False): + print(INTRO) + + jobs = arguments.get('jobs') + if jobs: + import multiprocessing + executor = multiprocessing.Pool(jobs) + attempt_iterator = executor.imap(functools.partial(sort_imports, **arguments), file_names) + else: + attempt_iterator = (sort_imports(file_name, **arguments) for file_name in file_names) + + for sort_attempt in attempt_iterator: + if not sort_attempt: + continue + incorrectly_sorted = sort_attempt.incorrectly_sorted + if arguments.get('check', False) and incorrectly_sorted: + wrong_sorted_files = True + if sort_attempt.skipped: + num_skipped += 1 + + if wrong_sorted_files: + sys.exit(1) + + num_skipped += len(skipped) + if num_skipped and not arguments.get('quiet', False): + if config['verbose']: + for was_skipped in skipped: + print("WARNING: {0} was skipped as it's listed in 'skip' setting" + " or matches a glob in 'skip_glob' setting".format(was_skipped)) + print("Skipped {0} files".format(num_skipped)) + + +if __name__ == "__main__": + main() diff --git a/venv/Lib/site-packages/isort/natural.py b/venv/Lib/site-packages/isort/natural.py new file mode 100644 index 0000000..c02b42c --- /dev/null +++ b/venv/Lib/site-packages/isort/natural.py @@ -0,0 +1,47 @@ +"""isort/natural.py. + +Enables sorting strings that contain numbers naturally + +usage: + natural.nsorted(list) + +Copyright (C) 2013 Timothy Edmund Crosley + +Implementation originally from @HappyLeapSecond stack overflow user in response to: + https://stackoverflow.com/questions/5967500/how-to-correctly-sort-a-string-with-a-number-inside + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and +to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or +substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF +CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +""" +import re + + +def _atoi(text): + return int(text) if text.isdigit() else text + + +def _natural_keys(text): + return [_atoi(c) for c in re.split(r'(\d+)', text)] + + +def nsorted(to_sort, key=None): + """Returns a naturally sorted list""" + if key is None: + key_callback = _natural_keys + else: + def key_callback(item): + return _natural_keys(key(item)) + + return sorted(to_sort, key=key_callback) diff --git a/venv/Lib/site-packages/isort/pie_slice.py b/venv/Lib/site-packages/isort/pie_slice.py new file mode 100644 index 0000000..569ea76 --- /dev/null +++ b/venv/Lib/site-packages/isort/pie_slice.py @@ -0,0 +1,154 @@ +"""pie_slice/overrides.py. + +Overrides Python syntax to conform to the Python3 version as much as possible using a '*' import + +Copyright (C) 2013 Timothy Edmund Crosley + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and +to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or +substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF +CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +""" +from __future__ import absolute_import + +import collections +import sys + +__version__ = "1.1.0" + +PY2 = sys.version_info[0] == 2 +PY3 = sys.version_info[0] == 3 +VERSION = sys.version_info + +__all__ = ['PY2', 'PY3', 'lru_cache', 'apply_changes_to_python_environment'] + + +if PY3: + input = input + + def apply_changes_to_python_environment(): + pass +else: + input = raw_input # noqa: F821 + + python_environment_changes_applied = False + + import sys + stdout = sys.stdout + stderr = sys.stderr + + def apply_changes_to_python_environment(): + global python_environment_changes_applied + if python_environment_changes_applied or sys.getdefaultencoding() == 'utf-8': + python_environment_changes_applied = True + return + + try: + reload(sys) + sys.stdout = stdout + sys.stderr = stderr + sys.setdefaultencoding('utf-8') + except NameError: # Python 3 + sys.exit('This should not happen!') + + python_environment_changes_applied = True + + +if sys.version_info < (3, 2): + try: + from threading import Lock + except ImportError: + from dummy_threading import Lock + + from functools import wraps + + _CacheInfo = collections.namedtuple("CacheInfo", "hits misses maxsize currsize") + + def lru_cache(maxsize=100): + """Least-recently-used cache decorator. + Taking from: https://github.com/MiCHiLU/python-functools32/blob/master/functools32/functools32.py + with slight modifications. + If *maxsize* is set to None, the LRU features are disabled and the cache + can grow without bound. + Arguments to the cached function must be hashable. + View the cache statistics named tuple (hits, misses, maxsize, currsize) with + f.cache_info(). Clear the cache and statistics with f.cache_clear(). + Access the underlying function with f.__wrapped__. + See: https://en.wikipedia.org/wiki/Cache_algorithms#Least_Recently_Used + + """ + def decorating_function(user_function, tuple=tuple, sorted=sorted, len=len, KeyError=KeyError): + hits, misses = [0], [0] + kwd_mark = (object(),) # separates positional and keyword args + lock = Lock() + + if maxsize is None: + CACHE = {} + + @wraps(user_function) + def wrapper(*args, **kwds): + key = args + if kwds: + key += kwd_mark + tuple(sorted(kwds.items())) + try: + result = CACHE[key] + hits[0] += 1 + return result + except KeyError: + pass + result = user_function(*args, **kwds) + CACHE[key] = result + misses[0] += 1 + return result + else: + CACHE = collections.OrderedDict() + + @wraps(user_function) + def wrapper(*args, **kwds): + key = args + if kwds: + key += kwd_mark + tuple(sorted(kwds.items())) + with lock: + cached = CACHE.get(key, None) + if cached: + del CACHE[key] + CACHE[key] = cached + hits[0] += 1 + return cached + result = user_function(*args, **kwds) + with lock: + CACHE[key] = result # record recent use of this key + misses[0] += 1 + while len(CACHE) > maxsize: + CACHE.popitem(last=False) + return result + + def cache_info(): + """Report CACHE statistics.""" + with lock: + return _CacheInfo(hits[0], misses[0], maxsize, len(CACHE)) + + def cache_clear(): + """Clear the CACHE and CACHE statistics.""" + with lock: + CACHE.clear() + hits[0] = misses[0] = 0 + + wrapper.cache_info = cache_info + wrapper.cache_clear = cache_clear + return wrapper + + return decorating_function + +else: + from functools import lru_cache diff --git a/venv/Lib/site-packages/isort/pylama_isort.py b/venv/Lib/site-packages/isort/pylama_isort.py new file mode 100644 index 0000000..6fa235f --- /dev/null +++ b/venv/Lib/site-packages/isort/pylama_isort.py @@ -0,0 +1,29 @@ +import os +import sys + +from pylama.lint import Linter as BaseLinter + +from .isort import SortImports + + +class Linter(BaseLinter): + + def allow(self, path): + """Determine if this path should be linted.""" + return path.endswith('.py') + + def run(self, path, **meta): + """Lint the file. Return an array of error dicts if appropriate.""" + with open(os.devnull, 'w') as devnull: + # Suppress isort messages + sys.stdout = devnull + + if SortImports(path, check=True).incorrectly_sorted: + return [{ + 'lnum': 0, + 'col': 0, + 'text': 'Incorrectly sorted imports.', + 'type': 'ISORT' + }] + else: + return [] diff --git a/venv/Lib/site-packages/isort/settings.py b/venv/Lib/site-packages/isort/settings.py new file mode 100644 index 0000000..a69471e --- /dev/null +++ b/venv/Lib/site-packages/isort/settings.py @@ -0,0 +1,356 @@ +"""isort/settings.py. + +Defines how the default settings for isort should be loaded + +(First from the default setting dictionary at the top of the file, then overridden by any settings + in ~/.isort.cfg or $XDG_CONFIG_HOME/isort.cfg if there are any) + +Copyright (C) 2013 Timothy Edmund Crosley + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and +to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or +substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF +CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +""" +from __future__ import absolute_import, division, print_function, unicode_literals + +import fnmatch +import io +import os +import posixpath +import re +import sys +import warnings +from collections import namedtuple +from distutils.util import strtobool + +from .pie_slice import lru_cache +from .utils import difference, union + +try: + import configparser +except ImportError: + import ConfigParser as configparser + +try: + import toml +except ImportError: + toml = False + +try: + import appdirs + if appdirs.system == 'darwin': + appdirs.system = 'linux2' +except ImportError: + appdirs = None + +MAX_CONFIG_SEARCH_DEPTH = 25 # The number of parent directories isort will look for a config file within +DEFAULT_SECTIONS = ('FUTURE', 'STDLIB', 'THIRDPARTY', 'FIRSTPARTY', 'LOCALFOLDER') + +safety_exclude_re = re.compile( + r"/(\.eggs|\.git|\.hg|\.mypy_cache|\.nox|\.tox|\.venv|_build|buck-out|build|dist|\.pants\.d" + r"|lib/python[0-9].[0-9]+)/" +) + +WrapModes = ('GRID', 'VERTICAL', 'HANGING_INDENT', 'VERTICAL_HANGING_INDENT', 'VERTICAL_GRID', 'VERTICAL_GRID_GROUPED', + 'VERTICAL_GRID_GROUPED_NO_COMMA', 'NOQA') +WrapModes = namedtuple('WrapModes', WrapModes)(*range(len(WrapModes))) + +# Note that none of these lists must be complete as they are simply fallbacks for when included auto-detection fails. +default = {'force_to_top': [], + 'skip': [], + 'skip_glob': [], + 'line_length': 79, + 'wrap_length': 0, + 'line_ending': None, + 'sections': DEFAULT_SECTIONS, + 'no_sections': False, + 'known_future_library': ['__future__'], + 'known_standard_library': ['AL', 'BaseHTTPServer', 'Bastion', 'CGIHTTPServer', 'Carbon', 'ColorPicker', + 'ConfigParser', 'Cookie', 'DEVICE', 'DocXMLRPCServer', 'EasyDialogs', 'FL', + 'FrameWork', 'GL', 'HTMLParser', 'MacOS', 'MimeWriter', 'MiniAEFrame', 'Nav', + 'PixMapWrapper', 'Queue', 'SUNAUDIODEV', 'ScrolledText', 'SimpleHTTPServer', + 'SimpleXMLRPCServer', 'SocketServer', 'StringIO', 'Tix', 'Tkinter', 'UserDict', + 'UserList', 'UserString', 'W', '__builtin__', 'abc', 'aepack', 'aetools', + 'aetypes', 'aifc', 'al', 'anydbm', 'applesingle', 'argparse', 'array', 'ast', + 'asynchat', 'asyncio', 'asyncore', 'atexit', 'audioop', 'autoGIL', 'base64', + 'bdb', 'binascii', 'binhex', 'bisect', 'bsddb', 'buildtools', 'builtins', + 'bz2', 'cPickle', 'cProfile', 'cStringIO', 'calendar', 'cd', 'cfmfile', 'cgi', + 'cgitb', 'chunk', 'cmath', 'cmd', 'code', 'codecs', 'codeop', 'collections', + 'colorsys', 'commands', 'compileall', 'compiler', 'concurrent', 'configparser', + 'contextlib', 'contextvars', 'cookielib', 'copy', 'copy_reg', 'copyreg', 'crypt', 'csv', + 'ctypes', 'curses', 'dataclasses', 'datetime', 'dbhash', 'dbm', 'decimal', 'difflib', + 'dircache', 'dis', 'distutils', 'dl', 'doctest', 'dumbdbm', 'dummy_thread', + 'dummy_threading', 'email', 'encodings', 'ensurepip', 'enum', 'errno', + 'exceptions', 'faulthandler', 'fcntl', 'filecmp', 'fileinput', 'findertools', + 'fl', 'flp', 'fm', 'fnmatch', 'formatter', 'fpectl', 'fpformat', 'fractions', + 'ftplib', 'functools', 'future_builtins', 'gc', 'gdbm', 'gensuitemodule', + 'getopt', 'getpass', 'gettext', 'gl', 'glob', 'grp', 'gzip', 'hashlib', + 'heapq', 'hmac', 'hotshot', 'html', 'htmlentitydefs', 'htmllib', 'http', + 'httplib', 'ic', 'icopen', 'imageop', 'imaplib', 'imgfile', 'imghdr', 'imp', + 'importlib', 'imputil', 'inspect', 'io', 'ipaddress', 'itertools', 'jpeg', + 'json', 'keyword', 'lib2to3', 'linecache', 'locale', 'logging', 'lzma', + 'macerrors', 'macostools', 'macpath', 'macresource', 'mailbox', 'mailcap', + 'marshal', 'math', 'md5', 'mhlib', 'mimetools', 'mimetypes', 'mimify', 'mmap', + 'modulefinder', 'msilib', 'msvcrt', 'multifile', 'multiprocessing', 'mutex', + 'netrc', 'new', 'nis', 'nntplib', 'numbers', 'operator', 'optparse', 'os', + 'ossaudiodev', 'parser', 'pathlib', 'pdb', 'pickle', 'pickletools', 'pipes', + 'pkgutil', 'platform', 'plistlib', 'popen2', 'poplib', 'posix', 'posixfile', + 'pprint', 'profile', 'pstats', 'pty', 'pwd', 'py_compile', 'pyclbr', 'pydoc', + 'queue', 'quopri', 'random', 're', 'readline', 'reprlib', 'resource', 'rexec', + 'rfc822', 'rlcompleter', 'robotparser', 'runpy', 'sched', 'secrets', 'select', + 'selectors', 'sets', 'sgmllib', 'sha', 'shelve', 'shlex', 'shutil', 'signal', + 'site', 'sitecustomize', 'smtpd', 'smtplib', 'sndhdr', 'socket', 'socketserver', + 'spwd', 'sqlite3', 'ssl', 'stat', 'statistics', 'statvfs', 'string', 'stringprep', + 'struct', 'subprocess', 'sunau', 'sunaudiodev', 'symbol', 'symtable', 'sys', + 'sysconfig', 'syslog', 'tabnanny', 'tarfile', 'telnetlib', 'tempfile', 'termios', + 'test', 'textwrap', 'this', 'thread', 'threading', 'time', 'timeit', 'tkinter', + 'token', 'tokenize', 'trace', 'traceback', 'tracemalloc', 'ttk', 'tty', 'turtle', + 'turtledemo', 'types', 'typing', 'unicodedata', 'unittest', 'urllib', 'urllib2', + 'urlparse', 'usercustomize', 'uu', 'uuid', 'venv', 'videoreader', + 'warnings', 'wave', 'weakref', 'webbrowser', 'whichdb', 'winreg', 'winsound', + 'wsgiref', 'xdrlib', 'xml', 'xmlrpc', 'xmlrpclib', 'zipapp', 'zipfile', + 'zipimport', 'zlib'], + 'known_third_party': ['google.appengine.api'], + 'known_first_party': [], + 'multi_line_output': WrapModes.GRID, + 'forced_separate': [], + 'indent': ' ' * 4, + 'comment_prefix': ' #', + 'length_sort': False, + 'add_imports': [], + 'remove_imports': [], + 'reverse_relative': False, + 'force_single_line': False, + 'default_section': 'FIRSTPARTY', + 'import_heading_future': '', + 'import_heading_stdlib': '', + 'import_heading_thirdparty': '', + 'import_heading_firstparty': '', + 'import_heading_localfolder': '', + 'balanced_wrapping': False, + 'use_parentheses': False, + 'order_by_type': True, + 'atomic': False, + 'lines_after_imports': -1, + 'lines_between_sections': 1, + 'lines_between_types': 0, + 'combine_as_imports': False, + 'combine_star': False, + 'keep_direct_and_as_imports': False, + 'include_trailing_comma': False, + 'from_first': False, + 'verbose': False, + 'quiet': False, + 'force_adds': False, + 'force_alphabetical_sort_within_sections': False, + 'force_alphabetical_sort': False, + 'force_grid_wrap': 0, + 'force_sort_within_sections': False, + 'show_diff': False, + 'ignore_whitespace': False, + 'no_lines_before': [], + 'no_inline_sort': False, + 'ignore_comments': False, + 'safety_excludes': True, + 'case_sensitive': False} + + +@lru_cache() +def from_path(path): + computed_settings = default.copy() + isort_defaults = ['~/.isort.cfg'] + if appdirs: + isort_defaults = [appdirs.user_config_dir('isort.cfg')] + isort_defaults + + _update_settings_with_config(path, '.editorconfig', ['~/.editorconfig'], ('*', '*.py', '**.py'), computed_settings) + _update_settings_with_config(path, 'pyproject.toml', [], ('tool.isort', ), computed_settings) + _update_settings_with_config(path, '.isort.cfg', isort_defaults, ('settings', 'isort'), computed_settings) + _update_settings_with_config(path, 'setup.cfg', [], ('isort', 'tool:isort'), computed_settings) + _update_settings_with_config(path, 'tox.ini', [], ('isort', 'tool:isort'), computed_settings) + return computed_settings + + +def _update_settings_with_config(path, name, default, sections, computed_settings): + editor_config_file = None + for potential_settings_path in default: + expanded = os.path.expanduser(potential_settings_path) + if os.path.exists(expanded): + editor_config_file = expanded + break + + tries = 0 + current_directory = path + while current_directory and tries < MAX_CONFIG_SEARCH_DEPTH: + potential_path = os.path.join(current_directory, str(name)) + if os.path.exists(potential_path): + editor_config_file = potential_path + break + + new_directory = os.path.split(current_directory)[0] + if current_directory == new_directory: + break + current_directory = new_directory + tries += 1 + + if editor_config_file and os.path.exists(editor_config_file): + _update_with_config_file(editor_config_file, sections, computed_settings) + + +def _update_with_config_file(file_path, sections, computed_settings): + cwd = os.path.dirname(file_path) + settings = _get_config_data(file_path, sections).copy() + if not settings: + return + + if file_path.endswith('.editorconfig'): + indent_style = settings.pop('indent_style', '').strip() + indent_size = settings.pop('indent_size', '').strip() + if indent_size == "tab": + indent_size = settings.pop('tab_width', '').strip() + + if indent_style == 'space': + computed_settings['indent'] = ' ' * (indent_size and int(indent_size) or 4) + elif indent_style == 'tab': + computed_settings['indent'] = '\t' * (indent_size and int(indent_size) or 1) + + max_line_length = settings.pop('max_line_length', '').strip() + if max_line_length: + computed_settings['line_length'] = float('inf') if max_line_length == 'off' else int(max_line_length) + + for key, value in settings.items(): + access_key = key.replace('not_', '').lower() + existing_value_type = type(default.get(access_key, '')) + if existing_value_type in (list, tuple): + # sections has fixed order values; no adding or substraction from any set + if access_key == 'sections': + computed_settings[access_key] = tuple(_as_list(value)) + else: + existing_data = set(computed_settings.get(access_key, default.get(access_key))) + if key.startswith('not_'): + computed_settings[access_key] = difference(existing_data, _as_list(value)) + elif key.startswith('known_'): + computed_settings[access_key] = union(existing_data, _abspaths(cwd, _as_list(value))) + else: + computed_settings[access_key] = union(existing_data, _as_list(value)) + elif existing_value_type == bool: + # Only some configuration formats support native boolean values. + if not isinstance(value, bool): + value = bool(strtobool(value)) + computed_settings[access_key] = value + elif key.startswith('known_'): + computed_settings[access_key] = list(_abspaths(cwd, _as_list(value))) + elif key == 'force_grid_wrap': + try: + result = existing_value_type(value) + except ValueError: + # backwards compat + result = default.get(access_key) if value.lower().strip() == 'false' else 2 + computed_settings[access_key] = result + else: + computed_settings[access_key] = existing_value_type(value) + + +def _as_list(value): + if not isinstance(value, list): + value = value.replace('\n', ',').split(',') + + return filter(bool, [item.strip() for item in value]) + + +def _abspaths(cwd, values): + paths = [ + os.path.join(cwd, value) + if not value.startswith(os.path.sep) and value.endswith(os.path.sep) + else value + for value in values + ] + return paths + + +@lru_cache() +def _get_config_data(file_path, sections): + settings = {} + + with io.open(file_path) as config_file: + if file_path.endswith('.toml'): + if toml: + config = toml.load(config_file) + for section in sections: + config_section = config + for key in section.split('.'): + config_section = config_section.get(key, {}) + settings.update(config_section) + else: + if '[tool.isort]' in config_file.read(): + warnings.warn("Found {} with [tool.isort] section, but toml package is not installed. " + "To configure isort with {}, install with 'isort[pyproject]'.".format(file_path, + file_path)) + else: + if file_path.endswith('.editorconfig'): + line = '\n' + last_position = config_file.tell() + while line: + line = config_file.readline() + if '[' in line: + config_file.seek(last_position) + break + last_position = config_file.tell() + + if sys.version_info >= (3, 2): + config = configparser.ConfigParser(strict=False) + config.read_file(config_file) + else: + config = configparser.SafeConfigParser() + config.readfp(config_file) + + for section in sections: + if config.has_section(section): + settings.update(config.items(section)) + + return settings + + +def should_skip(filename, config, path=''): + """Returns True if the file and/or folder should be skipped based on the passed in settings.""" + os_path = os.path.join(path, filename) + + normalized_path = os_path.replace('\\', '/') + if normalized_path[1:2] == ':': + normalized_path = normalized_path[2:] + + if path and config['safety_excludes']: + check_exclude = '/' + filename.replace('\\', '/') + '/' + if path and os.path.basename(path) in ('lib', ): + check_exclude = '/' + os.path.basename(path) + check_exclude + if safety_exclude_re.search(check_exclude): + return True + + for skip_path in config['skip']: + if posixpath.abspath(normalized_path) == posixpath.abspath(skip_path.replace('\\', '/')): + return True + + position = os.path.split(filename) + while position[1]: + if position[1] in config['skip']: + return True + position = os.path.split(position[0]) + + for glob in config['skip_glob']: + if fnmatch.fnmatch(filename, glob) or fnmatch.fnmatch('/' + filename, glob): + return True + + if not (os.path.isfile(os_path) or os.path.isdir(os_path) or os.path.islink(os_path)): + return True + + return False diff --git a/venv/Lib/site-packages/isort/utils.py b/venv/Lib/site-packages/isort/utils.py new file mode 100644 index 0000000..ce4e588 --- /dev/null +++ b/venv/Lib/site-packages/isort/utils.py @@ -0,0 +1,53 @@ +import os +import sys +from contextlib import contextmanager + + +def exists_case_sensitive(path): + """ + Returns if the given path exists and also matches the case on Windows. + + When finding files that can be imported, it is important for the cases to match because while + file os.path.exists("module.py") and os.path.exists("MODULE.py") both return True on Windows, Python + can only import using the case of the real file. + """ + result = os.path.exists(path) + if (sys.platform.startswith('win') or sys.platform == 'darwin') and result: + directory, basename = os.path.split(path) + result = basename in os.listdir(directory) + return result + + +@contextmanager +def chdir(path): + """Context manager for changing dir and restoring previous workdir after exit. + """ + curdir = os.getcwd() + os.chdir(path) + try: + yield + finally: + os.chdir(curdir) + + +def union(a, b): + """ Return a list of items that are in `a` or `b` + """ + u = [] + for item in a: + if item not in u: + u.append(item) + for item in b: + if item not in u: + u.append(item) + return u + + +def difference(a, b): + """ Return a list of items from `a` that are not in `b`. + """ + d = [] + for item in a: + if item not in b: + d.append(item) + return d diff --git a/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/AUTHORS.rst b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/AUTHORS.rst new file mode 100644 index 0000000..dbc0324 --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/AUTHORS.rst @@ -0,0 +1,10 @@ + +Authors +======= + +* Ionel Cristian Mărieș - https://blog.ionelmc.ro +* Alvin Chow - https://github.com/alvinchow86 +* Astrum Kuo - https://github.com/xowenx +* Erik M. Bray - http://iguananaut.net +* Ran Benita - https://github.com/bluetech +* "hugovk" - https://github.com/hugovk diff --git a/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/INSTALLER b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/LICENSE b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/LICENSE new file mode 100644 index 0000000..de39b84 --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/LICENSE @@ -0,0 +1,21 @@ +BSD 2-Clause License + +Copyright (c) 2014-2019, Ionel Cristian Mărieș +All rights reserved. + +Redistribution and use in source and binary forms, with or without modification, are permitted provided that the +following conditions are met: + +1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following +disclaimer. + +2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following +disclaimer in the documentation and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, +INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, +WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/METADATA b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/METADATA new file mode 100644 index 0000000..6b4b830 --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/METADATA @@ -0,0 +1,166 @@ +Metadata-Version: 2.1 +Name: lazy-object-proxy +Version: 1.4.3 +Summary: A fast and thorough lazy object proxy. +Home-page: https://github.com/ionelmc/python-lazy-object-proxy +Author: Ionel Cristian Mărieș +Author-email: contact@ionelmc.ro +License: BSD-2-Clause +Project-URL: Documentation, https://python-lazy-object-proxy.readthedocs.io/ +Project-URL: Changelog, https://python-lazy-object-proxy.readthedocs.io/en/latest/changelog.html +Project-URL: Issue Tracker, https://github.com/ionelmc/python-lazy-object-proxy/issues +Platform: UNKNOWN +Classifier: Development Status :: 5 - Production/Stable +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: BSD License +Classifier: Operating System :: Unix +Classifier: Operating System :: POSIX +Classifier: Operating System :: Microsoft :: Windows +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.4 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: 3.8 +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Classifier: Topic :: Utilities +Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.* + +======== +Overview +======== + + + +A fast and thorough lazy object proxy. + +* Free software: BSD 2-Clause License + +Note that this is based on `wrapt`_'s ObjectProxy with one big change: it calls a function the first time the proxy object is +used, while `wrapt.ObjectProxy` just forwards the method calls to the target object. + +In other words, you use `lazy-object-proxy` when you only have the object way later and you use `wrapt.ObjectProxy` when you +want to override few methods (by subclassing) and forward everything else to the target object. + +Example:: + + import lazy_object_proxy + + def expensive_func(): + from time import sleep + print('starting calculation') + # just as example for a very slow computation + sleep(2) + print('finished calculation') + # return the result of the calculation + return 10 + + obj = lazy_object_proxy.Proxy(expensive_func) + # function is called only when object is actually used + print(obj) # now expensive_func is called + + print(obj) # the result without calling the expensive_func + +Installation +============ + +:: + + pip install lazy-object-proxy + +Documentation +============= + +https://python-lazy-object-proxy.readthedocs.io/ + +Development +=========== + +To run the all tests run:: + + tox + +Acknowledgements +================ + +This project is based on some code from `wrapt`_ as you can see in the git history. + +.. _wrapt: https://github.com/GrahamDumpleton/wrapt + + +Changelog +========= + +1.4.3 (2019-10-26) +------------------ + +* Added binary wheels for Python 3.8. +* Fixed license metadata. + +1.4.2 (2019-08-22) +------------------ + +* Included a ``pyproject.toml`` to allow users install the sdist with old python/setuptools, as the + setuptools-scm dep will be fetched by pip instead of setuptools. + Fixes `#30 `_. + +1.4.1 (2019-05-10) +------------------ + +* Fixed wheels being built with ``-coverage`` cflags. No more issues about bogus ``cext.gcda`` files. +* Removed useless C file from wheels. +* Changed ``setup.py`` to use setuptools-scm. + +1.4.0 (2019-05-05) +------------------ + +* Fixed ``__mod__`` for the slots backend. Contributed by Ran Benita in + `#28 `_. +* Dropped support for Python 2.6 and 3.3. Contributed by "hugovk" in + `#24 `_. + +1.3.1 (2017-05-05) +------------------ + +* Fix broken release (``sdist`` had a broken ``MANIFEST.in``). + +1.3.0 (2017-05-02) +------------------ + +* Speed up arithmetic operations involving ``cext.Proxy`` subclasses. + +1.2.2 (2016-04-14) +------------------ + +* Added `manylinux `_ wheels. +* Minor cleanup in readme. + +1.2.1 (2015-08-18) +------------------ + +* Fix a memory leak (the wrapped object would get bogus references). Contributed by Astrum Kuo in + `#10 `_. + +1.2.0 (2015-07-06) +------------------ + +* Don't instantiate the object when __repr__ is called. This aids with debugging (allows one to see exactly in + what state the proxy is). + +1.1.0 (2015-07-05) +------------------ + +* Added support for pickling. The pickled value is going to be the wrapped object *without* any Proxy container. +* Fixed a memory management issue in the C extension (reference cycles weren't garbage collected due to improper + handling in the C extension). Contributed by Alvin Chow in + `#8 `_. + +1.0.2 (2015-04-11) +----------------------------------------- + +* First release on PyPI. + + diff --git a/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/RECORD b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/RECORD new file mode 100644 index 0000000..e07e94d --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/RECORD @@ -0,0 +1,20 @@ +lazy_object_proxy-1.4.3.dist-info/AUTHORS.rst,sha256=8CeCjODba0S8UczLyZBPhpO_J6NMZ9Hz_fE1A1uNe9Y,278 +lazy_object_proxy-1.4.3.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +lazy_object_proxy-1.4.3.dist-info/LICENSE,sha256=W-1KNkH2bsSNuN7SNqKV8z2H0CkxXzYXZVhUzw1wxUA,1329 +lazy_object_proxy-1.4.3.dist-info/METADATA,sha256=Y2X63wcFbQT4yI3zKpRFwfpA_TCpB6U79MPmRGCMJT0,5088 +lazy_object_proxy-1.4.3.dist-info/RECORD,, +lazy_object_proxy-1.4.3.dist-info/WHEEL,sha256=uaZe_9gV-4T_d4AskuIQkCgcY8wMc0UXsVFnf0_mBGs,106 +lazy_object_proxy-1.4.3.dist-info/top_level.txt,sha256=UNH-FQB-j_8bYqPz3gD90kHvaC42TQqY0thHSnbaa0k,18 +lazy_object_proxy/__init__.py,sha256=pMqxzToF24DuzOltm-Q8nZ3jNDXOaSQcJmiNArdUrlU,410 +lazy_object_proxy/__pycache__/__init__.cpython-37.pyc,, +lazy_object_proxy/__pycache__/_version.cpython-37.pyc,, +lazy_object_proxy/__pycache__/compat.cpython-37.pyc,, +lazy_object_proxy/__pycache__/simple.cpython-37.pyc,, +lazy_object_proxy/__pycache__/slots.cpython-37.pyc,, +lazy_object_proxy/__pycache__/utils.cpython-37.pyc,, +lazy_object_proxy/_version.py,sha256=KsdHOInxnNuaG_C69nBloPsRbSiniucSfNG8eBgw8yc,120 +lazy_object_proxy/cext.cp37-win_amd64.pyd,sha256=W0Ps706HlNLprmldUashETxgGaQoq6_A5J4w0PPuoJw,31744 +lazy_object_proxy/compat.py,sha256=DY3HbKwbrbeKY6tkXRNRLJ1go6HJb8HUwWqyw3T5g_g,196 +lazy_object_proxy/simple.py,sha256=guacy8_QbJeBs7vXpPPVoDVkDNXOZ86xyS1dtAeKvOs,8216 +lazy_object_proxy/slots.py,sha256=9DilWUINScpZN26NwmRtscTtaqaEwtCfIoriLq5Nz24,11359 +lazy_object_proxy/utils.py,sha256=x4XTrtlp_mDTWO_EOq_ILIOv2Qol8RLMnRm5M8l3OfU,291 diff --git a/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/WHEEL b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/WHEEL new file mode 100644 index 0000000..c4dd0f9 --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/WHEEL @@ -0,0 +1,5 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.33.6) +Root-Is-Purelib: false +Tag: cp37-cp37m-win_amd64 + diff --git a/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/top_level.txt b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/top_level.txt new file mode 100644 index 0000000..bdf032e --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy-1.4.3.dist-info/top_level.txt @@ -0,0 +1 @@ +lazy_object_proxy diff --git a/venv/Lib/site-packages/lazy_object_proxy/__init__.py b/venv/Lib/site-packages/lazy_object_proxy/__init__.py new file mode 100644 index 0000000..e9a9a76 --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy/__init__.py @@ -0,0 +1,23 @@ +try: + import copy_reg as copyreg +except ImportError: + import copyreg + +from .utils import identity + +copyreg.constructor(identity) + +try: + from .cext import Proxy + from .cext import identity +except ImportError: + from .slots import Proxy +else: + copyreg.constructor(identity) + +try: + from ._version import version as __version__ +except ImportError: + __version__ = '1.4.3' + +__all__ = "Proxy", diff --git a/venv/Lib/site-packages/lazy_object_proxy/__pycache__/__init__.cpython-37.pyc b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/__init__.cpython-37.pyc new file mode 100644 index 0000000..0e3505d Binary files /dev/null and b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/__init__.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/lazy_object_proxy/__pycache__/_version.cpython-37.pyc b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/_version.cpython-37.pyc new file mode 100644 index 0000000..5774aa3 Binary files /dev/null and b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/_version.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/lazy_object_proxy/__pycache__/compat.cpython-37.pyc b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/compat.cpython-37.pyc new file mode 100644 index 0000000..efb5ab0 Binary files /dev/null and b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/compat.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/lazy_object_proxy/__pycache__/simple.cpython-37.pyc b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/simple.cpython-37.pyc new file mode 100644 index 0000000..261981a Binary files /dev/null and b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/simple.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/lazy_object_proxy/__pycache__/slots.cpython-37.pyc b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/slots.cpython-37.pyc new file mode 100644 index 0000000..9b76e90 Binary files /dev/null and b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/slots.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/lazy_object_proxy/__pycache__/utils.cpython-37.pyc b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/utils.cpython-37.pyc new file mode 100644 index 0000000..6958b01 Binary files /dev/null and b/venv/Lib/site-packages/lazy_object_proxy/__pycache__/utils.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/lazy_object_proxy/_version.py b/venv/Lib/site-packages/lazy_object_proxy/_version.py new file mode 100644 index 0000000..3136771 --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy/_version.py @@ -0,0 +1,4 @@ +# coding: utf-8 +# file generated by setuptools_scm +# don't change, don't track in version control +version = '1.4.3' diff --git a/venv/Lib/site-packages/lazy_object_proxy/cext.cp37-win_amd64.pyd b/venv/Lib/site-packages/lazy_object_proxy/cext.cp37-win_amd64.pyd new file mode 100644 index 0000000..516e3f8 Binary files /dev/null and b/venv/Lib/site-packages/lazy_object_proxy/cext.cp37-win_amd64.pyd differ diff --git a/venv/Lib/site-packages/lazy_object_proxy/compat.py b/venv/Lib/site-packages/lazy_object_proxy/compat.py new file mode 100644 index 0000000..dc6edfa --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy/compat.py @@ -0,0 +1,9 @@ +import sys + +PY2 = sys.version_info[0] == 2 +PY3 = sys.version_info[0] == 3 + + +def with_metaclass(meta, *bases): + """Create a base class with a metaclass.""" + return meta("NewBase", bases, {}) diff --git a/venv/Lib/site-packages/lazy_object_proxy/simple.py b/venv/Lib/site-packages/lazy_object_proxy/simple.py new file mode 100644 index 0000000..24b1339 --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy/simple.py @@ -0,0 +1,246 @@ +import operator + +from .compat import PY2 +from .compat import PY3 +from .compat import with_metaclass +from .utils import cached_property +from .utils import identity + + +def make_proxy_method(code): + def proxy_wrapper(self, *args): + return code(self.__wrapped__, *args) + + return proxy_wrapper + + +class _ProxyMethods(object): + # We use properties to override the values of __module__ and + # __doc__. If we add these in ObjectProxy, the derived class + # __dict__ will still be setup to have string variants of these + # attributes and the rules of descriptors means that they appear to + # take precedence over the properties in the base class. To avoid + # that, we copy the properties into the derived class type itself + # via a meta class. In that way the properties will always take + # precedence. + + @property + def __module__(self): + return self.__wrapped__.__module__ + + @__module__.setter + def __module__(self, value): + self.__wrapped__.__module__ = value + + @property + def __doc__(self): + return self.__wrapped__.__doc__ + + @__doc__.setter + def __doc__(self, value): + self.__wrapped__.__doc__ = value + + # Need to also propagate the special __weakref__ attribute for case + # where decorating classes which will define this. If do not define + # it and use a function like inspect.getmembers() on a decorator + # class it will fail. This can't be in the derived classes. + + @property + def __weakref__(self): + return self.__wrapped__.__weakref__ + + +class _ProxyMetaType(type): + def __new__(cls, name, bases, dictionary): + # Copy our special properties into the class so that they + # always take precedence over attributes of the same name added + # during construction of a derived class. This is to save + # duplicating the implementation for them in all derived classes. + + dictionary.update(vars(_ProxyMethods)) + dictionary.pop('__dict__') + + return type.__new__(cls, name, bases, dictionary) + + +class Proxy(with_metaclass(_ProxyMetaType)): + __factory__ = None + + def __init__(self, factory): + self.__dict__['__factory__'] = factory + + @cached_property + def __wrapped__(self): + self = self.__dict__ + if '__factory__' in self: + factory = self['__factory__'] + return factory() + else: + raise ValueError("Proxy hasn't been initiated: __factory__ is missing.") + + __name__ = property(make_proxy_method(operator.attrgetter('__name__'))) + __class__ = property(make_proxy_method(operator.attrgetter('__class__'))) + __annotations__ = property(make_proxy_method(operator.attrgetter('__anotations__'))) + __dir__ = make_proxy_method(dir) + __str__ = make_proxy_method(str) + + if PY3: + __bytes__ = make_proxy_method(bytes) + + def __repr__(self, __getattr__=object.__getattribute__): + if '__wrapped__' in self.__dict__: + return '<{} at 0x{:x} wrapping {!r} at 0x{:x} with factory {!r}>'.format( + type(self).__name__, id(self), + self.__wrapped__, id(self.__wrapped__), + self.__factory__ + ) + else: + return '<{} at 0x{:x} with factory {!r}>'.format( + type(self).__name__, id(self), + self.__factory__ + ) + + __reversed__ = make_proxy_method(reversed) + + if PY3: + __round__ = make_proxy_method(round) + + __lt__ = make_proxy_method(operator.lt) + __le__ = make_proxy_method(operator.le) + __eq__ = make_proxy_method(operator.eq) + __ne__ = make_proxy_method(operator.ne) + __gt__ = make_proxy_method(operator.gt) + __ge__ = make_proxy_method(operator.ge) + __hash__ = make_proxy_method(hash) + __nonzero__ = make_proxy_method(bool) + __bool__ = make_proxy_method(bool) + + def __setattr__(self, name, value): + if hasattr(type(self), name): + self.__dict__[name] = value + else: + setattr(self.__wrapped__, name, value) + + def __getattr__(self, name): + if name in ('__wrapped__', '__factory__'): + raise AttributeError(name) + else: + return getattr(self.__wrapped__, name) + + def __delattr__(self, name): + if hasattr(type(self), name): + del self.__dict__[name] + else: + delattr(self.__wrapped__, name) + + __add__ = make_proxy_method(operator.add) + __sub__ = make_proxy_method(operator.sub) + __mul__ = make_proxy_method(operator.mul) + __div__ = make_proxy_method(operator.div if PY2 else operator.truediv) + __truediv__ = make_proxy_method(operator.truediv) + __floordiv__ = make_proxy_method(operator.floordiv) + __mod__ = make_proxy_method(operator.mod) + __divmod__ = make_proxy_method(divmod) + __pow__ = make_proxy_method(pow) + __lshift__ = make_proxy_method(operator.lshift) + __rshift__ = make_proxy_method(operator.rshift) + __and__ = make_proxy_method(operator.and_) + __xor__ = make_proxy_method(operator.xor) + __or__ = make_proxy_method(operator.or_) + + def __radd__(self, other): + return other + self.__wrapped__ + + def __rsub__(self, other): + return other - self.__wrapped__ + + def __rmul__(self, other): + return other * self.__wrapped__ + + def __rdiv__(self, other): + return operator.div(other, self.__wrapped__) + + def __rtruediv__(self, other): + return operator.truediv(other, self.__wrapped__) + + def __rfloordiv__(self, other): + return other // self.__wrapped__ + + def __rmod__(self, other): + return other % self.__wrapped__ + + def __rdivmod__(self, other): + return divmod(other, self.__wrapped__) + + def __rpow__(self, other, *args): + return pow(other, self.__wrapped__, *args) + + def __rlshift__(self, other): + return other << self.__wrapped__ + + def __rrshift__(self, other): + return other >> self.__wrapped__ + + def __rand__(self, other): + return other & self.__wrapped__ + + def __rxor__(self, other): + return other ^ self.__wrapped__ + + def __ror__(self, other): + return other | self.__wrapped__ + + __iadd__ = make_proxy_method(operator.iadd) + __isub__ = make_proxy_method(operator.isub) + __imul__ = make_proxy_method(operator.imul) + __idiv__ = make_proxy_method(operator.idiv if PY2 else operator.itruediv) + __itruediv__ = make_proxy_method(operator.itruediv) + __ifloordiv__ = make_proxy_method(operator.ifloordiv) + __imod__ = make_proxy_method(operator.imod) + __ipow__ = make_proxy_method(operator.ipow) + __ilshift__ = make_proxy_method(operator.ilshift) + __irshift__ = make_proxy_method(operator.irshift) + __iand__ = make_proxy_method(operator.iand) + __ixor__ = make_proxy_method(operator.ixor) + __ior__ = make_proxy_method(operator.ior) + __neg__ = make_proxy_method(operator.neg) + __pos__ = make_proxy_method(operator.pos) + __abs__ = make_proxy_method(operator.abs) + __invert__ = make_proxy_method(operator.invert) + + __int__ = make_proxy_method(int) + + if PY2: + __long__ = make_proxy_method(long) # noqa + + __float__ = make_proxy_method(float) + __oct__ = make_proxy_method(oct) + __hex__ = make_proxy_method(hex) + __index__ = make_proxy_method(operator.index) + __len__ = make_proxy_method(len) + __contains__ = make_proxy_method(operator.contains) + __getitem__ = make_proxy_method(operator.getitem) + __setitem__ = make_proxy_method(operator.setitem) + __delitem__ = make_proxy_method(operator.delitem) + + if PY2: + __getslice__ = make_proxy_method(operator.getslice) + __setslice__ = make_proxy_method(operator.setslice) + __delslice__ = make_proxy_method(operator.delslice) + + def __enter__(self): + return self.__wrapped__.__enter__() + + def __exit__(self, *args, **kwargs): + return self.__wrapped__.__exit__(*args, **kwargs) + + __iter__ = make_proxy_method(iter) + + def __call__(self, *args, **kwargs): + return self.__wrapped__(*args, **kwargs) + + def __reduce__(self): + return identity, (self.__wrapped__,) + + def __reduce_ex__(self, protocol): + return identity, (self.__wrapped__,) diff --git a/venv/Lib/site-packages/lazy_object_proxy/slots.py b/venv/Lib/site-packages/lazy_object_proxy/slots.py new file mode 100644 index 0000000..efb08db --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy/slots.py @@ -0,0 +1,414 @@ +import operator + +from .compat import PY2 +from .compat import PY3 +from .compat import with_metaclass +from .utils import identity + + +class _ProxyMethods(object): + # We use properties to override the values of __module__ and + # __doc__. If we add these in ObjectProxy, the derived class + # __dict__ will still be setup to have string variants of these + # attributes and the rules of descriptors means that they appear to + # take precedence over the properties in the base class. To avoid + # that, we copy the properties into the derived class type itself + # via a meta class. In that way the properties will always take + # precedence. + + @property + def __module__(self): + return self.__wrapped__.__module__ + + @__module__.setter + def __module__(self, value): + self.__wrapped__.__module__ = value + + @property + def __doc__(self): + return self.__wrapped__.__doc__ + + @__doc__.setter + def __doc__(self, value): + self.__wrapped__.__doc__ = value + + # We similar use a property for __dict__. We need __dict__ to be + # explicit to ensure that vars() works as expected. + + @property + def __dict__(self): + return self.__wrapped__.__dict__ + + # Need to also propagate the special __weakref__ attribute for case + # where decorating classes which will define this. If do not define + # it and use a function like inspect.getmembers() on a decorator + # class it will fail. This can't be in the derived classes. + + @property + def __weakref__(self): + return self.__wrapped__.__weakref__ + + +class _ProxyMetaType(type): + def __new__(cls, name, bases, dictionary): + # Copy our special properties into the class so that they + # always take precedence over attributes of the same name added + # during construction of a derived class. This is to save + # duplicating the implementation for them in all derived classes. + + dictionary.update(vars(_ProxyMethods)) + + return type.__new__(cls, name, bases, dictionary) + + +class Proxy(with_metaclass(_ProxyMetaType)): + """ + A proxy implementation in pure Python, using slots. You can subclass this to add + local methods or attributes, or enable __dict__. + + The most important internals: + + * ``__factory__`` is the callback that "materializes" the object we proxy to. + * ``__target__`` will contain the object we proxy to, once it's "materialized". + * ``__wrapped__`` is a property that does either: + + * return ``__target__`` if it's set. + * calls ``__factory__``, saves result to ``__target__`` and returns said result. + """ + + __slots__ = '__target__', '__factory__' + + def __init__(self, factory): + object.__setattr__(self, '__factory__', factory) + + @property + def __wrapped__(self, __getattr__=object.__getattribute__, __setattr__=object.__setattr__, + __delattr__=object.__delattr__): + try: + return __getattr__(self, '__target__') + except AttributeError: + try: + factory = __getattr__(self, '__factory__') + except AttributeError: + raise ValueError("Proxy hasn't been initiated: __factory__ is missing.") + target = factory() + __setattr__(self, '__target__', target) + return target + + @__wrapped__.deleter + def __wrapped__(self, __delattr__=object.__delattr__): + __delattr__(self, '__target__') + + @__wrapped__.setter + def __wrapped__(self, target, __setattr__=object.__setattr__): + __setattr__(self, '__target__', target) + + @property + def __name__(self): + return self.__wrapped__.__name__ + + @__name__.setter + def __name__(self, value): + self.__wrapped__.__name__ = value + + @property + def __class__(self): + return self.__wrapped__.__class__ + + @__class__.setter # noqa + def __class__(self, value): + self.__wrapped__.__class__ = value + + @property + def __annotations__(self): + return self.__wrapped__.__anotations__ + + @__annotations__.setter + def __annotations__(self, value): + self.__wrapped__.__annotations__ = value + + def __dir__(self): + return dir(self.__wrapped__) + + def __str__(self): + return str(self.__wrapped__) + + if PY3: + def __bytes__(self): + return bytes(self.__wrapped__) + + def __repr__(self, __getattr__=object.__getattribute__): + try: + target = __getattr__(self, '__target__') + except AttributeError: + return '<{} at 0x{:x} with factory {!r}>'.format( + type(self).__name__, id(self), + self.__factory__ + ) + else: + return '<{} at 0x{:x} wrapping {!r} at 0x{:x} with factory {!r}>'.format( + type(self).__name__, id(self), + target, id(target), + self.__factory__ + ) + + def __reversed__(self): + return reversed(self.__wrapped__) + + if PY3: + def __round__(self): + return round(self.__wrapped__) + + def __lt__(self, other): + return self.__wrapped__ < other + + def __le__(self, other): + return self.__wrapped__ <= other + + def __eq__(self, other): + return self.__wrapped__ == other + + def __ne__(self, other): + return self.__wrapped__ != other + + def __gt__(self, other): + return self.__wrapped__ > other + + def __ge__(self, other): + return self.__wrapped__ >= other + + def __hash__(self): + return hash(self.__wrapped__) + + def __nonzero__(self): + return bool(self.__wrapped__) + + def __bool__(self): + return bool(self.__wrapped__) + + def __setattr__(self, name, value, __setattr__=object.__setattr__): + if hasattr(type(self), name): + __setattr__(self, name, value) + else: + setattr(self.__wrapped__, name, value) + + def __getattr__(self, name): + if name in ('__wrapped__', '__factory__'): + raise AttributeError(name) + else: + return getattr(self.__wrapped__, name) + + def __delattr__(self, name, __delattr__=object.__delattr__): + if hasattr(type(self), name): + __delattr__(self, name) + else: + delattr(self.__wrapped__, name) + + def __add__(self, other): + return self.__wrapped__ + other + + def __sub__(self, other): + return self.__wrapped__ - other + + def __mul__(self, other): + return self.__wrapped__ * other + + def __div__(self, other): + return operator.div(self.__wrapped__, other) + + def __truediv__(self, other): + return operator.truediv(self.__wrapped__, other) + + def __floordiv__(self, other): + return self.__wrapped__ // other + + def __mod__(self, other): + return self.__wrapped__ % other + + def __divmod__(self, other): + return divmod(self.__wrapped__, other) + + def __pow__(self, other, *args): + return pow(self.__wrapped__, other, *args) + + def __lshift__(self, other): + return self.__wrapped__ << other + + def __rshift__(self, other): + return self.__wrapped__ >> other + + def __and__(self, other): + return self.__wrapped__ & other + + def __xor__(self, other): + return self.__wrapped__ ^ other + + def __or__(self, other): + return self.__wrapped__ | other + + def __radd__(self, other): + return other + self.__wrapped__ + + def __rsub__(self, other): + return other - self.__wrapped__ + + def __rmul__(self, other): + return other * self.__wrapped__ + + def __rdiv__(self, other): + return operator.div(other, self.__wrapped__) + + def __rtruediv__(self, other): + return operator.truediv(other, self.__wrapped__) + + def __rfloordiv__(self, other): + return other // self.__wrapped__ + + def __rmod__(self, other): + return other % self.__wrapped__ + + def __rdivmod__(self, other): + return divmod(other, self.__wrapped__) + + def __rpow__(self, other, *args): + return pow(other, self.__wrapped__, *args) + + def __rlshift__(self, other): + return other << self.__wrapped__ + + def __rrshift__(self, other): + return other >> self.__wrapped__ + + def __rand__(self, other): + return other & self.__wrapped__ + + def __rxor__(self, other): + return other ^ self.__wrapped__ + + def __ror__(self, other): + return other | self.__wrapped__ + + def __iadd__(self, other): + self.__wrapped__ += other + return self + + def __isub__(self, other): + self.__wrapped__ -= other + return self + + def __imul__(self, other): + self.__wrapped__ *= other + return self + + def __idiv__(self, other): + self.__wrapped__ = operator.idiv(self.__wrapped__, other) + return self + + def __itruediv__(self, other): + self.__wrapped__ = operator.itruediv(self.__wrapped__, other) + return self + + def __ifloordiv__(self, other): + self.__wrapped__ //= other + return self + + def __imod__(self, other): + self.__wrapped__ %= other + return self + + def __ipow__(self, other): + self.__wrapped__ **= other + return self + + def __ilshift__(self, other): + self.__wrapped__ <<= other + return self + + def __irshift__(self, other): + self.__wrapped__ >>= other + return self + + def __iand__(self, other): + self.__wrapped__ &= other + return self + + def __ixor__(self, other): + self.__wrapped__ ^= other + return self + + def __ior__(self, other): + self.__wrapped__ |= other + return self + + def __neg__(self): + return -self.__wrapped__ + + def __pos__(self): + return +self.__wrapped__ + + def __abs__(self): + return abs(self.__wrapped__) + + def __invert__(self): + return ~self.__wrapped__ + + def __int__(self): + return int(self.__wrapped__) + + if PY2: + def __long__(self): + return long(self.__wrapped__) # noqa + + def __float__(self): + return float(self.__wrapped__) + + def __oct__(self): + return oct(self.__wrapped__) + + def __hex__(self): + return hex(self.__wrapped__) + + def __index__(self): + return operator.index(self.__wrapped__) + + def __len__(self): + return len(self.__wrapped__) + + def __contains__(self, value): + return value in self.__wrapped__ + + def __getitem__(self, key): + return self.__wrapped__[key] + + def __setitem__(self, key, value): + self.__wrapped__[key] = value + + def __delitem__(self, key): + del self.__wrapped__[key] + + def __getslice__(self, i, j): + return self.__wrapped__[i:j] + + def __setslice__(self, i, j, value): + self.__wrapped__[i:j] = value + + def __delslice__(self, i, j): + del self.__wrapped__[i:j] + + def __enter__(self): + return self.__wrapped__.__enter__() + + def __exit__(self, *args, **kwargs): + return self.__wrapped__.__exit__(*args, **kwargs) + + def __iter__(self): + return iter(self.__wrapped__) + + def __call__(self, *args, **kwargs): + return self.__wrapped__(*args, **kwargs) + + def __reduce__(self): + return identity, (self.__wrapped__,) + + def __reduce_ex__(self, protocol): + return identity, (self.__wrapped__,) diff --git a/venv/Lib/site-packages/lazy_object_proxy/utils.py b/venv/Lib/site-packages/lazy_object_proxy/utils.py new file mode 100644 index 0000000..ceb3050 --- /dev/null +++ b/venv/Lib/site-packages/lazy_object_proxy/utils.py @@ -0,0 +1,13 @@ +def identity(obj): + return obj + + +class cached_property(object): + def __init__(self, func): + self.func = func + + def __get__(self, obj, cls): + if obj is None: + return self + value = obj.__dict__[self.func.__name__] = self.func(obj) + return value diff --git a/venv/Lib/site-packages/mccabe-0.6.1.dist-info/DESCRIPTION.rst b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/DESCRIPTION.rst new file mode 100644 index 0000000..de61068 --- /dev/null +++ b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/DESCRIPTION.rst @@ -0,0 +1,152 @@ +McCabe complexity checker +========================= + +Ned's script to check McCabe complexity. + +This module provides a plugin for ``flake8``, the Python code checker. + + +Installation +------------ + +You can install, upgrade, uninstall ``mccabe`` with these commands:: + + $ pip install mccabe + $ pip install --upgrade mccabe + $ pip uninstall mccabe + + +Standalone script +----------------- + +The complexity checker can be used directly:: + + $ python -m mccabe --min 5 mccabe.py + ("185:1: 'PathGraphingAstVisitor.visitIf'", 5) + ("71:1: 'PathGraph.to_dot'", 5) + ("245:1: 'McCabeChecker.run'", 5) + ("283:1: 'main'", 7) + ("203:1: 'PathGraphingAstVisitor.visitTryExcept'", 5) + ("257:1: 'get_code_complexity'", 5) + + +Plugin for Flake8 +----------------- + +When both ``flake8 2.0`` and ``mccabe`` are installed, the plugin is +available in ``flake8``:: + + $ flake8 --version + 2.0 (pep8: 1.4.2, pyflakes: 0.6.1, mccabe: 0.2) + +By default the plugin is disabled. Use the ``--max-complexity`` switch to +enable it. It will emit a warning if the McCabe complexity of a function is +higher that the value:: + + $ flake8 --max-complexity 10 coolproject + ... + coolproject/mod.py:1204:1: C901 'CoolFactory.prepare' is too complex (14) + +This feature is quite useful to detect over-complex code. According to McCabe, +anything that goes beyond 10 is too complex. + + +Links +----- + +* Feedback and ideas: http://mail.python.org/mailman/listinfo/code-quality + +* Cyclomatic complexity: http://en.wikipedia.org/wiki/Cyclomatic_complexity. + +* Ned Batchelder's script: + http://nedbatchelder.com/blog/200803/python_code_complexity_microtool.html + + +Changes +------- + +0.6.1 - 2017-01-26 +`````````````````` + +* Fix signature for ``PathGraphingAstVisitor.default`` to match the signature + for ``ASTVisitor`` + +0.6.0 - 2017-01-23 +`````````````````` + +* Add support for Python 3.6 + +* Fix handling for missing statement types + +0.5.3 - 2016-12-14 +`````````````````` + +* Report actual column number of violation instead of the start of the line + +0.5.2 - 2016-07-31 +`````````````````` + +* When opening files ourselves, make sure we always name the file variable + +0.5.1 - 2016-07-28 +`````````````````` + +* Set default maximum complexity to -1 on the class itself + +0.5.0 - 2016-05-30 +`````````````````` + +* PyCon 2016 PDX release + +* Add support for Flake8 3.0 + +0.4.0 - 2016-01-27 +`````````````````` + +* Stop testing on Python 3.2 + +* Add support for async/await keywords on Python 3.5 from PEP 0492 + +0.3.1 - 2015-06-14 +`````````````````` + +* Include ``test_mccabe.py`` in releases. + +* Always coerce the ``max_complexity`` value from Flake8's entry-point to an + integer. + +0.3 - 2014-12-17 +```````````````` + +* Computation was wrong: the mccabe complexity starts at 1, not 2. + +* The ``max-complexity`` value is now inclusive. E.g.: if the + value is 10 and the reported complexity is 10, then it passes. + +* Add tests. + + +0.2.1 - 2013-04-03 +`````````````````` + +* Do not require ``setuptools`` in setup.py. It works around an issue + with ``pip`` and Python 3. + + +0.2 - 2013-02-22 +```````````````` + +* Rename project to ``mccabe``. + +* Provide ``flake8.extension`` setuptools entry point. + +* Read ``max-complexity`` from the configuration file. + +* Rename argument ``min_complexity`` to ``threshold``. + + +0.1 - 2013-02-11 +```````````````` +* First release + + diff --git a/venv/Lib/site-packages/mccabe-0.6.1.dist-info/INSTALLER b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/venv/Lib/site-packages/mccabe-0.6.1.dist-info/METADATA b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/METADATA new file mode 100644 index 0000000..f22645f --- /dev/null +++ b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/METADATA @@ -0,0 +1,178 @@ +Metadata-Version: 2.0 +Name: mccabe +Version: 0.6.1 +Summary: McCabe checker, plugin for flake8 +Home-page: https://github.com/pycqa/mccabe +Author: Ian Cordasco +Author-email: graffatcolmingov@gmail.com +License: Expat license +Keywords: flake8 mccabe +Platform: UNKNOWN +Classifier: Development Status :: 5 - Production/Stable +Classifier: Environment :: Console +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: MIT License +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2 +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.3 +Classifier: Programming Language :: Python :: 3.4 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Classifier: Topic :: Software Development :: Quality Assurance + +McCabe complexity checker +========================= + +Ned's script to check McCabe complexity. + +This module provides a plugin for ``flake8``, the Python code checker. + + +Installation +------------ + +You can install, upgrade, uninstall ``mccabe`` with these commands:: + + $ pip install mccabe + $ pip install --upgrade mccabe + $ pip uninstall mccabe + + +Standalone script +----------------- + +The complexity checker can be used directly:: + + $ python -m mccabe --min 5 mccabe.py + ("185:1: 'PathGraphingAstVisitor.visitIf'", 5) + ("71:1: 'PathGraph.to_dot'", 5) + ("245:1: 'McCabeChecker.run'", 5) + ("283:1: 'main'", 7) + ("203:1: 'PathGraphingAstVisitor.visitTryExcept'", 5) + ("257:1: 'get_code_complexity'", 5) + + +Plugin for Flake8 +----------------- + +When both ``flake8 2.0`` and ``mccabe`` are installed, the plugin is +available in ``flake8``:: + + $ flake8 --version + 2.0 (pep8: 1.4.2, pyflakes: 0.6.1, mccabe: 0.2) + +By default the plugin is disabled. Use the ``--max-complexity`` switch to +enable it. It will emit a warning if the McCabe complexity of a function is +higher that the value:: + + $ flake8 --max-complexity 10 coolproject + ... + coolproject/mod.py:1204:1: C901 'CoolFactory.prepare' is too complex (14) + +This feature is quite useful to detect over-complex code. According to McCabe, +anything that goes beyond 10 is too complex. + + +Links +----- + +* Feedback and ideas: http://mail.python.org/mailman/listinfo/code-quality + +* Cyclomatic complexity: http://en.wikipedia.org/wiki/Cyclomatic_complexity. + +* Ned Batchelder's script: + http://nedbatchelder.com/blog/200803/python_code_complexity_microtool.html + + +Changes +------- + +0.6.1 - 2017-01-26 +`````````````````` + +* Fix signature for ``PathGraphingAstVisitor.default`` to match the signature + for ``ASTVisitor`` + +0.6.0 - 2017-01-23 +`````````````````` + +* Add support for Python 3.6 + +* Fix handling for missing statement types + +0.5.3 - 2016-12-14 +`````````````````` + +* Report actual column number of violation instead of the start of the line + +0.5.2 - 2016-07-31 +`````````````````` + +* When opening files ourselves, make sure we always name the file variable + +0.5.1 - 2016-07-28 +`````````````````` + +* Set default maximum complexity to -1 on the class itself + +0.5.0 - 2016-05-30 +`````````````````` + +* PyCon 2016 PDX release + +* Add support for Flake8 3.0 + +0.4.0 - 2016-01-27 +`````````````````` + +* Stop testing on Python 3.2 + +* Add support for async/await keywords on Python 3.5 from PEP 0492 + +0.3.1 - 2015-06-14 +`````````````````` + +* Include ``test_mccabe.py`` in releases. + +* Always coerce the ``max_complexity`` value from Flake8's entry-point to an + integer. + +0.3 - 2014-12-17 +```````````````` + +* Computation was wrong: the mccabe complexity starts at 1, not 2. + +* The ``max-complexity`` value is now inclusive. E.g.: if the + value is 10 and the reported complexity is 10, then it passes. + +* Add tests. + + +0.2.1 - 2013-04-03 +`````````````````` + +* Do not require ``setuptools`` in setup.py. It works around an issue + with ``pip`` and Python 3. + + +0.2 - 2013-02-22 +```````````````` + +* Rename project to ``mccabe``. + +* Provide ``flake8.extension`` setuptools entry point. + +* Read ``max-complexity`` from the configuration file. + +* Rename argument ``min_complexity`` to ``threshold``. + + +0.1 - 2013-02-11 +```````````````` +* First release + + diff --git a/venv/Lib/site-packages/mccabe-0.6.1.dist-info/RECORD b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/RECORD new file mode 100644 index 0000000..91abd1a --- /dev/null +++ b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/RECORD @@ -0,0 +1,10 @@ +__pycache__/mccabe.cpython-37.pyc,, +mccabe-0.6.1.dist-info/DESCRIPTION.rst,sha256=lGHJ-Y3IviuP3DRqLL_TXPUr3wJ2GZ8XJkAV6ve3O58,3302 +mccabe-0.6.1.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4 +mccabe-0.6.1.dist-info/METADATA,sha256=jawnTfTVrlzBSmeI-cTXSRIwIlijODtZdj-padBqIv0,4324 +mccabe-0.6.1.dist-info/RECORD,, +mccabe-0.6.1.dist-info/WHEEL,sha256=o2k-Qa-RMNIJmUdIc7KU6VWR_ErNRbWNlxDIpl7lm34,110 +mccabe-0.6.1.dist-info/entry_points.txt,sha256=N2NH182GXTUyTm8r8XMgadb9C-CRa5dUr1k8OC91uGE,47 +mccabe-0.6.1.dist-info/metadata.json,sha256=e508OR4t6_G7h7eO2C6NHlHQqVpPZZH1_DlAPrVECYM,1218 +mccabe-0.6.1.dist-info/top_level.txt,sha256=21cXuqZE-lpcfAqqANvX9EjI1ED1p8zcViv064u3RKA,7 +mccabe.py,sha256=XPMywdQshG_5nSjckb-OzNqnCQuXQvy3FTClspKwGQA,10693 diff --git a/venv/Lib/site-packages/mccabe-0.6.1.dist-info/WHEEL b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/WHEEL new file mode 100644 index 0000000..8b6dd1b --- /dev/null +++ b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/WHEEL @@ -0,0 +1,6 @@ +Wheel-Version: 1.0 +Generator: bdist_wheel (0.29.0) +Root-Is-Purelib: true +Tag: py2-none-any +Tag: py3-none-any + diff --git a/venv/Lib/site-packages/mccabe-0.6.1.dist-info/entry_points.txt b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/entry_points.txt new file mode 100644 index 0000000..cc6645b --- /dev/null +++ b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/entry_points.txt @@ -0,0 +1,3 @@ +[flake8.extension] +C90 = mccabe:McCabeChecker + diff --git a/venv/Lib/site-packages/mccabe-0.6.1.dist-info/metadata.json b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/metadata.json new file mode 100644 index 0000000..ae04d8f --- /dev/null +++ b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/metadata.json @@ -0,0 +1 @@ +{"classifiers": ["Development Status :: 5 - Production/Stable", "Environment :: Console", "Intended Audience :: Developers", "License :: OSI Approved :: MIT License", "Operating System :: OS Independent", "Programming Language :: Python", "Programming Language :: Python :: 2", "Programming Language :: Python :: 2.7", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.3", "Programming Language :: Python :: 3.4", "Programming Language :: Python :: 3.5", "Programming Language :: Python :: 3.6", "Topic :: Software Development :: Libraries :: Python Modules", "Topic :: Software Development :: Quality Assurance"], "extensions": {"python.details": {"contacts": [{"email": "graffatcolmingov@gmail.com", "name": "Ian Cordasco", "role": "author"}], "document_names": {"description": "DESCRIPTION.rst"}, "project_urls": {"Home": "https://github.com/pycqa/mccabe"}}, "python.exports": {"flake8.extension": {"C90": "mccabe:McCabeChecker"}}}, "generator": "bdist_wheel (0.29.0)", "keywords": ["flake8", "mccabe"], "license": "Expat license", "metadata_version": "2.0", "name": "mccabe", "summary": "McCabe checker, plugin for flake8", "test_requires": [{"requires": ["pytest"]}], "version": "0.6.1"} \ No newline at end of file diff --git a/venv/Lib/site-packages/mccabe-0.6.1.dist-info/top_level.txt b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/top_level.txt new file mode 100644 index 0000000..8831b36 --- /dev/null +++ b/venv/Lib/site-packages/mccabe-0.6.1.dist-info/top_level.txt @@ -0,0 +1 @@ +mccabe diff --git a/venv/Lib/site-packages/mccabe.py b/venv/Lib/site-packages/mccabe.py new file mode 100644 index 0000000..c0cda75 --- /dev/null +++ b/venv/Lib/site-packages/mccabe.py @@ -0,0 +1,347 @@ +""" Meager code path measurement tool. + Ned Batchelder + http://nedbatchelder.com/blog/200803/python_code_complexity_microtool.html + MIT License. +""" +from __future__ import with_statement + +import optparse +import sys +import tokenize + +from collections import defaultdict +try: + import ast + from ast import iter_child_nodes +except ImportError: # Python 2.5 + from flake8.util import ast, iter_child_nodes + +__version__ = '0.6.1' + + +class ASTVisitor(object): + """Performs a depth-first walk of the AST.""" + + def __init__(self): + self.node = None + self._cache = {} + + def default(self, node, *args): + for child in iter_child_nodes(node): + self.dispatch(child, *args) + + def dispatch(self, node, *args): + self.node = node + klass = node.__class__ + meth = self._cache.get(klass) + if meth is None: + className = klass.__name__ + meth = getattr(self.visitor, 'visit' + className, self.default) + self._cache[klass] = meth + return meth(node, *args) + + def preorder(self, tree, visitor, *args): + """Do preorder walk of tree using visitor""" + self.visitor = visitor + visitor.visit = self.dispatch + self.dispatch(tree, *args) # XXX *args make sense? + + +class PathNode(object): + def __init__(self, name, look="circle"): + self.name = name + self.look = look + + def to_dot(self): + print('node [shape=%s,label="%s"] %d;' % ( + self.look, self.name, self.dot_id())) + + def dot_id(self): + return id(self) + + +class PathGraph(object): + def __init__(self, name, entity, lineno, column=0): + self.name = name + self.entity = entity + self.lineno = lineno + self.column = column + self.nodes = defaultdict(list) + + def connect(self, n1, n2): + self.nodes[n1].append(n2) + # Ensure that the destination node is always counted. + self.nodes[n2] = [] + + def to_dot(self): + print('subgraph {') + for node in self.nodes: + node.to_dot() + for node, nexts in self.nodes.items(): + for next in nexts: + print('%s -- %s;' % (node.dot_id(), next.dot_id())) + print('}') + + def complexity(self): + """ Return the McCabe complexity for the graph. + V-E+2 + """ + num_edges = sum([len(n) for n in self.nodes.values()]) + num_nodes = len(self.nodes) + return num_edges - num_nodes + 2 + + +class PathGraphingAstVisitor(ASTVisitor): + """ A visitor for a parsed Abstract Syntax Tree which finds executable + statements. + """ + + def __init__(self): + super(PathGraphingAstVisitor, self).__init__() + self.classname = "" + self.graphs = {} + self.reset() + + def reset(self): + self.graph = None + self.tail = None + + def dispatch_list(self, node_list): + for node in node_list: + self.dispatch(node) + + def visitFunctionDef(self, node): + + if self.classname: + entity = '%s%s' % (self.classname, node.name) + else: + entity = node.name + + name = '%d:%d: %r' % (node.lineno, node.col_offset, entity) + + if self.graph is not None: + # closure + pathnode = self.appendPathNode(name) + self.tail = pathnode + self.dispatch_list(node.body) + bottom = PathNode("", look='point') + self.graph.connect(self.tail, bottom) + self.graph.connect(pathnode, bottom) + self.tail = bottom + else: + self.graph = PathGraph(name, entity, node.lineno, node.col_offset) + pathnode = PathNode(name) + self.tail = pathnode + self.dispatch_list(node.body) + self.graphs["%s%s" % (self.classname, node.name)] = self.graph + self.reset() + + visitAsyncFunctionDef = visitFunctionDef + + def visitClassDef(self, node): + old_classname = self.classname + self.classname += node.name + "." + self.dispatch_list(node.body) + self.classname = old_classname + + def appendPathNode(self, name): + if not self.tail: + return + pathnode = PathNode(name) + self.graph.connect(self.tail, pathnode) + self.tail = pathnode + return pathnode + + def visitSimpleStatement(self, node): + if node.lineno is None: + lineno = 0 + else: + lineno = node.lineno + name = "Stmt %d" % lineno + self.appendPathNode(name) + + def default(self, node, *args): + if isinstance(node, ast.stmt): + self.visitSimpleStatement(node) + else: + super(PathGraphingAstVisitor, self).default(node, *args) + + def visitLoop(self, node): + name = "Loop %d" % node.lineno + self._subgraph(node, name) + + visitAsyncFor = visitFor = visitWhile = visitLoop + + def visitIf(self, node): + name = "If %d" % node.lineno + self._subgraph(node, name) + + def _subgraph(self, node, name, extra_blocks=()): + """create the subgraphs representing any `if` and `for` statements""" + if self.graph is None: + # global loop + self.graph = PathGraph(name, name, node.lineno, node.col_offset) + pathnode = PathNode(name) + self._subgraph_parse(node, pathnode, extra_blocks) + self.graphs["%s%s" % (self.classname, name)] = self.graph + self.reset() + else: + pathnode = self.appendPathNode(name) + self._subgraph_parse(node, pathnode, extra_blocks) + + def _subgraph_parse(self, node, pathnode, extra_blocks): + """parse the body and any `else` block of `if` and `for` statements""" + loose_ends = [] + self.tail = pathnode + self.dispatch_list(node.body) + loose_ends.append(self.tail) + for extra in extra_blocks: + self.tail = pathnode + self.dispatch_list(extra.body) + loose_ends.append(self.tail) + if node.orelse: + self.tail = pathnode + self.dispatch_list(node.orelse) + loose_ends.append(self.tail) + else: + loose_ends.append(pathnode) + if pathnode: + bottom = PathNode("", look='point') + for le in loose_ends: + self.graph.connect(le, bottom) + self.tail = bottom + + def visitTryExcept(self, node): + name = "TryExcept %d" % node.lineno + self._subgraph(node, name, extra_blocks=node.handlers) + + visitTry = visitTryExcept + + def visitWith(self, node): + name = "With %d" % node.lineno + self.appendPathNode(name) + self.dispatch_list(node.body) + + visitAsyncWith = visitWith + + +class McCabeChecker(object): + """McCabe cyclomatic complexity checker.""" + name = 'mccabe' + version = __version__ + _code = 'C901' + _error_tmpl = "C901 %r is too complex (%d)" + max_complexity = -1 + + def __init__(self, tree, filename): + self.tree = tree + + @classmethod + def add_options(cls, parser): + flag = '--max-complexity' + kwargs = { + 'default': -1, + 'action': 'store', + 'type': 'int', + 'help': 'McCabe complexity threshold', + 'parse_from_config': 'True', + } + config_opts = getattr(parser, 'config_options', None) + if isinstance(config_opts, list): + # Flake8 2.x + kwargs.pop('parse_from_config') + parser.add_option(flag, **kwargs) + parser.config_options.append('max-complexity') + else: + parser.add_option(flag, **kwargs) + + @classmethod + def parse_options(cls, options): + cls.max_complexity = int(options.max_complexity) + + def run(self): + if self.max_complexity < 0: + return + visitor = PathGraphingAstVisitor() + visitor.preorder(self.tree, visitor) + for graph in visitor.graphs.values(): + if graph.complexity() > self.max_complexity: + text = self._error_tmpl % (graph.entity, graph.complexity()) + yield graph.lineno, graph.column, text, type(self) + + +def get_code_complexity(code, threshold=7, filename='stdin'): + try: + tree = compile(code, filename, "exec", ast.PyCF_ONLY_AST) + except SyntaxError: + e = sys.exc_info()[1] + sys.stderr.write("Unable to parse %s: %s\n" % (filename, e)) + return 0 + + complx = [] + McCabeChecker.max_complexity = threshold + for lineno, offset, text, check in McCabeChecker(tree, filename).run(): + complx.append('%s:%d:1: %s' % (filename, lineno, text)) + + if len(complx) == 0: + return 0 + print('\n'.join(complx)) + return len(complx) + + +def get_module_complexity(module_path, threshold=7): + """Returns the complexity of a module""" + with open(module_path, "rU") as mod: + code = mod.read() + return get_code_complexity(code, threshold, filename=module_path) + + +def _read(filename): + if (2, 5) < sys.version_info < (3, 0): + with open(filename, 'rU') as f: + return f.read() + elif (3, 0) <= sys.version_info < (4, 0): + """Read the source code.""" + try: + with open(filename, 'rb') as f: + (encoding, _) = tokenize.detect_encoding(f.readline) + except (LookupError, SyntaxError, UnicodeError): + # Fall back if file encoding is improperly declared + with open(filename, encoding='latin-1') as f: + return f.read() + with open(filename, 'r', encoding=encoding) as f: + return f.read() + + +def main(argv=None): + if argv is None: + argv = sys.argv[1:] + opar = optparse.OptionParser() + opar.add_option("-d", "--dot", dest="dot", + help="output a graphviz dot file", action="store_true") + opar.add_option("-m", "--min", dest="threshold", + help="minimum complexity for output", type="int", + default=1) + + options, args = opar.parse_args(argv) + + code = _read(args[0]) + tree = compile(code, args[0], "exec", ast.PyCF_ONLY_AST) + visitor = PathGraphingAstVisitor() + visitor.preorder(tree, visitor) + + if options.dot: + print('graph {') + for graph in visitor.graphs.values(): + if (not 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If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/venv/Lib/site-packages/pylint-2.4.4.dist-info/INSTALLER b/venv/Lib/site-packages/pylint-2.4.4.dist-info/INSTALLER new file mode 100644 index 0000000..a1b589e --- /dev/null +++ b/venv/Lib/site-packages/pylint-2.4.4.dist-info/INSTALLER @@ -0,0 +1 @@ +pip diff --git a/venv/Lib/site-packages/pylint-2.4.4.dist-info/METADATA b/venv/Lib/site-packages/pylint-2.4.4.dist-info/METADATA new file mode 100644 index 0000000..993f92b --- /dev/null +++ b/venv/Lib/site-packages/pylint-2.4.4.dist-info/METADATA @@ -0,0 +1,202 @@ +Metadata-Version: 2.1 +Name: pylint +Version: 2.4.4 +Summary: python code static checker +Home-page: https://github.com/PyCQA/pylint +Author: Python Code Quality Authority +Author-email: code-quality@python.org +License: GPL +Platform: UNKNOWN +Classifier: Development Status :: 6 - Mature +Classifier: Environment :: Console +Classifier: Intended Audience :: Developers +Classifier: License :: OSI Approved :: GNU General Public License (GPL) +Classifier: Operating System :: OS Independent +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 3 +Classifier: Programming Language :: Python :: 3.5 +Classifier: Programming Language :: Python :: 3.6 +Classifier: Programming Language :: Python :: 3.7 +Classifier: Programming Language :: Python :: 3 :: Only +Classifier: Programming Language :: Python :: Implementation :: CPython +Classifier: Programming Language :: Python :: Implementation :: PyPy +Classifier: Topic :: Software Development :: Debuggers +Classifier: Topic :: Software Development :: Quality Assurance +Classifier: Topic :: Software Development :: Testing +Requires-Python: >=3.5.* +Requires-Dist: astroid (<2.4,>=2.3.0) +Requires-Dist: isort (<5,>=4.2.5) +Requires-Dist: mccabe (<0.7,>=0.6) +Requires-Dist: colorama ; sys_platform=="win32" + + +README for Pylint - http://pylint.pycqa.org/ +============================================ + +.. image:: https://travis-ci.org/PyCQA/pylint.svg?branch=master + :target: https://travis-ci.org/PyCQA/pylint + +.. image:: https://ci.appveyor.com/api/projects/status/rbvwhakyj1y09atb/branch/master?svg=true + :alt: AppVeyor Build Status + :target: https://ci.appveyor.com/project/PCManticore/pylint + +.. image:: https://coveralls.io/repos/github/PyCQA/pylint/badge.svg?branch=master + :target: https://coveralls.io/github/PyCQA/pylint?branch=master + + +.. image:: https://img.shields.io/pypi/v/pylint.svg + :alt: Pypi Package version + :target: https://pypi.python.org/pypi/pylint + +.. image:: https://readthedocs.org/projects/pylint/badge/?version=latest + :target: http://pylint.readthedocs.io/en/latest/?badge=latest + :alt: Documentation Status + +.. image:: https://img.shields.io/badge/code%20style-black-000000.svg + :target: https://github.com/ambv/black + +.. |tideliftlogo| image:: doc/media/Tidelift_Logos_RGB_Tidelift_Shorthand_On-White_small.png + :width: 75 + :height: 60 + :alt: Tidelift + +.. list-table:: + :widths: 10 100 + + * - |tideliftlogo| + - Professional support for pylint is available as part of the `Tidelift + Subscription`_. Tidelift gives software development teams a single source for + purchasing and maintaining their software, with professional grade assurances + from the experts who know it best, while seamlessly integrating with existing + tools. + +.. _Tidelift Subscription: https://tidelift.com/subscription/pkg/pypi-pylint?utm_source=pypi-pylint&utm_medium=referral&utm_campaign=readme + + +====== +Pylint +====== + +**It's not just a linter that annoys you!** + +Pylint is a Python static code analysis tool which looks for programming errors, +helps enforcing a coding standard, sniffs for code smells and offers simple refactoring +suggestions. + +It's highly configurable, having special pragmas to control its errors and warnings +from within your code, as well as from an extensive configuration file. +It is also possible to write your own plugins for adding your own checks or for +extending pylint in one way or another. + +It's a free software distributed under the GNU General Public Licence unless +otherwise specified. + +Development is hosted on GitHub: https://github.com/PyCQA/pylint/ + +You can use the code-quality@python.org mailing list to discuss about +Pylint. Subscribe at https://mail.python.org/mailman/listinfo/code-quality/ +or read the archives at https://mail.python.org/pipermail/code-quality/ + +Pull requests are amazing and most welcome. + +Install +------- + +Pylint can be simply installed by running:: + + pip install pylint + +If you are using Python 3.6+, upgrade to get full support for your version:: + + pip install pylint --upgrade + +If you want to install from a source distribution, extract the tarball and run +the following command :: + + python setup.py install + + +Do make sure to do the same for astroid, which is used internally by pylint. + +For debian and rpm packages, use your usual tools according to your Linux distribution. + +More information about installation and available distribution format +can be found here_. + +Documentation +------------- + +The documentation lives at http://pylint.pycqa.org/. + +Pylint is shipped with following additional commands: + +* pyreverse: an UML diagram generator +* symilar: an independent similarities checker +* epylint: Emacs and Flymake compatible Pylint + + +Testing +------- + +We use tox_ for running the test suite. You should be able to install it with:: + + pip install tox pytest + + +To run the test suite for a particular Python version, you can do:: + + tox -e py37 + + +To run individual tests with ``tox``, you can do:: + + tox -e py37 -- -k name_of_the_test + + +We use pytest_ for testing ``pylint``, which you can use without using ``tox`` for a faster development cycle. + +If you want to run tests on a specific portion of the code with pytest_, (pytest-cov_) and your local python version:: + + # ( pip install pytest-cov ) + # Everything: + python3 -m pytest tests/ + # Everything in tests/message with coverage for the relevant code: + python3 -m pytest tests/message/ --cov=pylint.message + coverage html + # Only the functional test "missing_kwoa_py3": + python3 -m pytest "tests/test_functional.py::test_functional[missing_kwoa_py3]" + + +Do not forget to clone astroid_ and install the last version:: + + + git clone https://github.com/PyCQA/astroid.git + + # From source + python3 astroid/setup.py build sdist + pip3 install astroid/dist/astroid*.tar.gz + + # Using an editable installation + cd astroid + python3 -m pip install -e . + + +For more detailed information, check the documentation. + +.. _here: http://pylint.pycqa.org/en/latest/user_guide/installation.html +.. _tox: https://tox.readthedocs.io/en/latest/ +.. _pytest: https://docs.pytest.org/en/latest/ +.. _pytest-cov: https://pypi.org/project/pytest-cov/ +.. _astroid: https://github.com/PyCQA/astroid + +License +------- + +pylint is, with a few exceptions listed below, `GPLv2 `_. + +The icon files are licensed under the `CC BY-SA 4.0 `_ license: + +- `doc/logo.png `_ +- `doc/logo.svg `_ + + diff --git a/venv/Lib/site-packages/pylint-2.4.4.dist-info/RECORD b/venv/Lib/site-packages/pylint-2.4.4.dist-info/RECORD new file mode 100644 index 0000000..f35fd61 --- /dev/null +++ b/venv/Lib/site-packages/pylint-2.4.4.dist-info/RECORD @@ -0,0 +1,161 @@ 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a/venv/Lib/site-packages/pylint-2.4.4.dist-info/top_level.txt b/venv/Lib/site-packages/pylint-2.4.4.dist-info/top_level.txt new file mode 100644 index 0000000..7fb0ea1 --- /dev/null +++ b/venv/Lib/site-packages/pylint-2.4.4.dist-info/top_level.txt @@ -0,0 +1 @@ +pylint diff --git a/venv/Lib/site-packages/pylint/__init__.py b/venv/Lib/site-packages/pylint/__init__.py new file mode 100644 index 0000000..8980938 --- /dev/null +++ b/venv/Lib/site-packages/pylint/__init__.py @@ -0,0 +1,43 @@ +# Copyright (c) 2008, 2012 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2014, 2016-2017 Claudiu Popa +# Copyright (c) 2014 Arun Persaud +# Copyright (c) 2015 Ionel Cristian Maries +# Copyright (c) 2018 Nick Drozd + +# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html +# For details: https://github.com/PyCQA/pylint/blob/master/COPYING + +import sys + +from pylint.__pkginfo__ import version as __version__ +from pylint.checkers.similar import Run as SimilarRun +from pylint.epylint import Run as EpylintRun +from pylint.lint import Run as PylintRun +from pylint.pyreverse.main import Run as PyreverseRun + + +def run_pylint(): + """run pylint""" + + try: + PylintRun(sys.argv[1:]) + except KeyboardInterrupt: + sys.exit(1) + + +def run_epylint(): + """run pylint""" + + EpylintRun() + + +def run_pyreverse(): + """run pyreverse""" + + PyreverseRun(sys.argv[1:]) + + +def run_symilar(): + """run symilar""" + + SimilarRun(sys.argv[1:]) diff --git a/venv/Lib/site-packages/pylint/__main__.py b/venv/Lib/site-packages/pylint/__main__.py new file mode 100644 index 0000000..e12309b --- /dev/null +++ b/venv/Lib/site-packages/pylint/__main__.py @@ -0,0 +1,7 @@ +# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html +# For details: https://github.com/PyCQA/pylint/blob/master/COPYING + +#!/usr/bin/env python +import pylint + +pylint.run_pylint() diff --git a/venv/Lib/site-packages/pylint/__pkginfo__.py b/venv/Lib/site-packages/pylint/__pkginfo__.py new file mode 100644 index 0000000..68702f4 --- /dev/null +++ b/venv/Lib/site-packages/pylint/__pkginfo__.py @@ -0,0 +1,85 @@ +# Copyright (c) 2006-2015 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2010 Julien Jehannet +# Copyright (c) 2013-2014 Google, Inc. +# Copyright (c) 2014-2018 Claudiu Popa +# Copyright (c) 2014 Brett Cannon +# Copyright (c) 2014 Ricardo Gemignani +# Copyright (c) 2014 Arun Persaud +# Copyright (c) 2015 Ionel Cristian Maries +# Copyright (c) 2016 Moises Lopez +# Copyright (c) 2016 Florian Bruhin +# Copyright (c) 2016 Jakub Wilk +# Copyright (c) 2017-2018 Hugo +# Copyright (c) 2018 Sushobhit <31987769+sushobhit27@users.noreply.github.com> +# Copyright (c) 2018 Ashley Whetter + +# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html +# For details: https://github.com/PyCQA/pylint/blob/master/COPYING + +# pylint: disable=redefined-builtin,invalid-name +"""pylint packaging information""" + +from os.path import join + +# For an official release, use dev_version = None +numversion = (2, 4, 4) +dev_version = None + +version = ".".join(str(num) for num in numversion) +if dev_version is not None: + version += "-dev" + str(dev_version) + +install_requires = ["astroid>=2.3.0,<2.4", "isort>=4.2.5,<5", "mccabe>=0.6,<0.7"] + +dependency_links = [] # type: ignore + +extras_require = {} +extras_require[':sys_platform=="win32"'] = ["colorama"] + +license = "GPL" +description = "python code static checker" +web = "https://github.com/PyCQA/pylint" +mailinglist = "mailto:code-quality@python.org" +author = "Python Code Quality Authority" +author_email = "code-quality@python.org" + +classifiers = [ + "Development Status :: 6 - Mature", + "Environment :: Console", + "Intended Audience :: Developers", + "License :: OSI Approved :: GNU General Public License (GPL)", + "Operating System :: OS Independent", + "Programming Language :: Python", + "Programming Language :: Python :: 3", + "Programming Language :: Python :: 3.5", + "Programming Language :: Python :: 3.6", + "Programming Language :: Python :: 3.7", + "Programming Language :: Python :: 3 :: Only", + "Programming Language :: Python :: Implementation :: CPython", + "Programming Language :: Python :: Implementation :: PyPy", + "Topic :: Software Development :: Debuggers", + "Topic :: Software Development :: Quality Assurance", + "Topic :: Software Development :: Testing", +] + + +long_desc = """\ + Pylint is a Python source code analyzer which looks for programming + errors, helps enforcing a coding standard and sniffs for some code + smells (as defined in Martin Fowler's Refactoring book) + . + Pylint can be seen as another PyChecker since nearly all tests you + can do with PyChecker can also be done with Pylint. However, Pylint + offers some more features, like checking length of lines of code, + checking if variable names are well-formed according to your coding + standard, or checking if declared interfaces are truly implemented, + and much more. + . + Additionally, it is possible to write plugins to add your own checks. + . + Pylint is shipped with "pyreverse" (UML diagram generator) + and "symilar" (an independent similarities checker).""" + +scripts = [ + join("bin", filename) for filename in ("pylint", "symilar", "epylint", "pyreverse") +] diff --git a/venv/Lib/site-packages/pylint/__pycache__/__init__.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/__init__.cpython-37.pyc new file mode 100644 index 0000000..4a5176d Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/__init__.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/__main__.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/__main__.cpython-37.pyc new file mode 100644 index 0000000..06de374 Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/__main__.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/__pkginfo__.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/__pkginfo__.cpython-37.pyc new file mode 100644 index 0000000..41da823 Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/__pkginfo__.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/config.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/config.cpython-37.pyc new file mode 100644 index 0000000..0d3fde9 Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/config.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/constants.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/constants.cpython-37.pyc new file mode 100644 index 0000000..1d96028 Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/constants.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/epylint.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/epylint.cpython-37.pyc new file mode 100644 index 0000000..1b8630e Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/epylint.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/exceptions.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/exceptions.cpython-37.pyc new file mode 100644 index 0000000..9766c27 Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/exceptions.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/graph.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/graph.cpython-37.pyc new file mode 100644 index 0000000..3a0dd39 Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/graph.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/interfaces.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/interfaces.cpython-37.pyc new file mode 100644 index 0000000..53b4224 Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/interfaces.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/lint.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/lint.cpython-37.pyc new file mode 100644 index 0000000..ed84248 Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/lint.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/__pycache__/testutils.cpython-37.pyc b/venv/Lib/site-packages/pylint/__pycache__/testutils.cpython-37.pyc new file mode 100644 index 0000000..8db991c Binary files /dev/null and b/venv/Lib/site-packages/pylint/__pycache__/testutils.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/checkers/__init__.py b/venv/Lib/site-packages/pylint/checkers/__init__.py new file mode 100644 index 0000000..9c6306f --- /dev/null +++ b/venv/Lib/site-packages/pylint/checkers/__init__.py @@ -0,0 +1,64 @@ +# Copyright (c) 2006-2014 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2013-2014 Google, Inc. +# Copyright (c) 2013 buck@yelp.com +# Copyright (c) 2014-2017 Claudiu Popa +# Copyright (c) 2014 Brett Cannon +# Copyright (c) 2014 Arun Persaud +# Copyright (c) 2015 Ionel Cristian Maries +# Copyright (c) 2016 Moises Lopez +# Copyright (c) 2017-2018 Bryce Guinta + +# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html +# For details: https://github.com/PyCQA/pylint/blob/master/COPYING + +"""utilities methods and classes for checkers + +Base id of standard checkers (used in msg and report ids): +01: base +02: classes +03: format +04: import +05: misc +06: variables +07: exceptions +08: similar +09: design_analysis +10: newstyle +11: typecheck +12: logging +13: string_format +14: string_constant +15: stdlib +16: python3 +17: refactoring +18-50: not yet used: reserved for future internal checkers. +51-99: perhaps used: reserved for external checkers + +The raw_metrics checker has no number associated since it doesn't emit any +messages nor reports. XXX not true, emit a 07 report ! + +""" + +from pylint.checkers.base_checker import BaseChecker, BaseTokenChecker +from pylint.utils import register_plugins + + +def table_lines_from_stats(stats, _, columns): + """get values listed in from and , + and return a formated list of values, designed to be given to a + ureport.Table object + """ + lines = [] + for m_type in columns: + new = stats[m_type] + new = "%.3f" % new if isinstance(new, float) else str(new) + lines += (m_type.replace("_", " "), new, "NC", "NC") + return lines + + +def initialize(linter): + """initialize linter with checkers in this package """ + register_plugins(linter, __path__[0]) + + +__all__ = ("BaseChecker", "BaseTokenChecker", "initialize") diff --git a/venv/Lib/site-packages/pylint/checkers/__pycache__/__init__.cpython-37.pyc b/venv/Lib/site-packages/pylint/checkers/__pycache__/__init__.cpython-37.pyc new file mode 100644 index 0000000..3782086 Binary files /dev/null and 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b/venv/Lib/site-packages/pylint/checkers/__pycache__/variables.cpython-37.pyc differ diff --git a/venv/Lib/site-packages/pylint/checkers/async.py b/venv/Lib/site-packages/pylint/checkers/async.py new file mode 100644 index 0000000..c33071e --- /dev/null +++ b/venv/Lib/site-packages/pylint/checkers/async.py @@ -0,0 +1,89 @@ +# Copyright (c) 2015-2018 Claudiu Popa +# Copyright (c) 2017 Derek Gustafson + +# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html +# For details: https://github.com/PyCQA/pylint/blob/master/COPYING + +"""Checker for anything related to the async protocol (PEP 492).""" + +import sys + +import astroid +from astroid import bases, exceptions + +from pylint import checkers, interfaces, utils +from pylint.checkers import utils as checker_utils +from pylint.checkers.utils import decorated_with + + +class AsyncChecker(checkers.BaseChecker): + __implements__ = interfaces.IAstroidChecker + name = "async" + msgs = { + "E1700": ( + "Yield inside async function", + "yield-inside-async-function", + "Used when an `yield` or `yield from` statement is " + "found inside an async function.", + {"minversion": (3, 5)}, + ), + "E1701": ( + "Async context manager '%s' doesn't implement __aenter__ and __aexit__.", + "not-async-context-manager", + "Used when an async context manager is used with an object " + "that does not implement the async context management protocol.", + {"minversion": (3, 5)}, + ), + } + + def open(self): + self._ignore_mixin_members = utils.get_global_option( + self, "ignore-mixin-members" + ) + self._async_generators = ["contextlib.asynccontextmanager"] + + @checker_utils.check_messages("yield-inside-async-function") + def visit_asyncfunctiondef(self, node): + for child in node.nodes_of_class(astroid.Yield): + if child.scope() is node and ( + sys.version_info[:2] == (3, 5) or isinstance(child, astroid.YieldFrom) + ): + self.add_message("yield-inside-async-function", node=child) + + @checker_utils.check_messages("not-async-context-manager") + def visit_asyncwith(self, node): + for ctx_mgr, _ in node.items: + inferred = checker_utils.safe_infer(ctx_mgr) + if inferred is None or inferred is astroid.Uninferable: + continue + + if isinstance(inferred, bases.AsyncGenerator): + # Check if we are dealing with a function decorated + # with contextlib.asynccontextmanager. + if decorated_with(inferred.parent, self._async_generators): + continue + else: + try: + inferred.getattr("__aenter__") + inferred.getattr("__aexit__") + except exceptions.NotFoundError: + if isinstance(inferred, astroid.Instance): + # If we do not know the bases of this class, + # just skip it. + if not checker_utils.has_known_bases(inferred): + continue + # Just ignore mixin classes. + if self._ignore_mixin_members: + if inferred.name[-5:].lower() == "mixin": + continue + else: + continue + + self.add_message( + "not-async-context-manager", node=node, args=(inferred.name,) + ) + + +def register(linter): + """required method to auto register this checker""" + linter.register_checker(AsyncChecker(linter)) diff --git a/venv/Lib/site-packages/pylint/checkers/base.py b/venv/Lib/site-packages/pylint/checkers/base.py new file mode 100644 index 0000000..c94676e --- /dev/null +++ b/venv/Lib/site-packages/pylint/checkers/base.py @@ -0,0 +1,2333 @@ +# -*- coding: utf-8 -*- +# Copyright (c) 2006-2016 LOGILAB S.A. (Paris, FRANCE) +# Copyright (c) 2010 Daniel Harding +# Copyright (c) 2012-2014 Google, Inc. +# Copyright (c) 2013-2018 Claudiu Popa +# Copyright (c) 2014 Brett Cannon +# Copyright (c) 2014 Arun Persaud +# Copyright (c) 2015 Nick Bastin +# Copyright (c) 2015 Michael Kefeder +# Copyright (c) 2015 Dmitry Pribysh +# Copyright (c) 2015 Stephane Wirtel +# Copyright (c) 2015 Cosmin Poieana +# Copyright (c) 2015 Florian Bruhin +# Copyright (c) 2015 Radu Ciorba +# Copyright (c) 2015 Ionel Cristian Maries +# Copyright (c) 2016, 2018 Jakub Wilk +# Copyright (c) 2016-2017 Łukasz Rogalski +# Copyright (c) 2016 Glenn Matthews +# Copyright (c) 2016 Elias Dorneles +# Copyright (c) 2016 Ashley Whetter +# Copyright (c) 2016 Yannack +# Copyright (c) 2016 Alex Jurkiewicz +# Copyright (c) 2017 Jacques Kvam +# Copyright (c) 2017 ttenhoeve-aa +# Copyright (c) 2017 hippo91 +# Copyright (c) 2018 Nick Drozd +# Copyright (c) 2018 Steven M. Vascellaro +# Copyright (c) 2018 Mike Frysinger +# Copyright (c) 2018 ssolanki +# Copyright (c) 2018 Sushobhit <31987769+sushobhit27@users.noreply.github.com> +# Copyright (c) 2018 Chris Lamb +# Copyright (c) 2018 glmdgrielson <32415403+glmdgrielson@users.noreply.github.com> +# Copyright (c) 2018 Ville Skyttä + +# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html +# For details: https://github.com/PyCQA/pylint/blob/master/COPYING + +"""basic checker for Python code""" + +import builtins +import collections +import itertools +import re +import sys +from typing import Pattern + +import astroid +import astroid.bases +import astroid.scoped_nodes +from astroid.arguments import CallSite + +import pylint.utils as lint_utils +from pylint import checkers, exceptions, interfaces +from pylint.checkers import utils +from pylint.checkers.utils import is_property_setter_or_deleter +from pylint.reporters.ureports import nodes as reporter_nodes + + +class NamingStyle: + # It may seem counterintuitive that single naming style + # has multiple "accepted" forms of regular expressions, + # but we need to special-case stuff like dunder names + # in method names. + CLASS_NAME_RGX = None # type: Pattern[str] + MOD_NAME_RGX = None # type: Pattern[str] + CONST_NAME_RGX = None # type: Pattern[str] + COMP_VAR_RGX = None # type: Pattern[str] + DEFAULT_NAME_RGX = None # type: Pattern[str] + CLASS_ATTRIBUTE_RGX = None # type: Pattern[str] + + @classmethod + def get_regex(cls, name_type): + return { + "module": cls.MOD_NAME_RGX, + "const": cls.CONST_NAME_RGX, + "class": cls.CLASS_NAME_RGX, + "function": cls.DEFAULT_NAME_RGX, + "method": cls.DEFAULT_NAME_RGX, + "attr": cls.DEFAULT_NAME_RGX, + "argument": cls.DEFAULT_NAME_RGX, + "variable": cls.DEFAULT_NAME_RGX, + "class_attribute": cls.CLASS_ATTRIBUTE_RGX, + "inlinevar": cls.COMP_VAR_RGX, + }[name_type] + + +class SnakeCaseStyle(NamingStyle): + """Regex rules for snake_case naming style.""" + + CLASS_NAME_RGX = re.compile("[a-z_][a-z0-9_]+$") + MOD_NAME_RGX = re.compile("([a-z_][a-z0-9_]*)$") + CONST_NAME_RGX = re.compile("(([a-z_][a-z0-9_]*)|(__.*__))$") + COMP_VAR_RGX = re.compile("[a-z_][a-z0-9_]*$") + DEFAULT_NAME_RGX = re.compile( + "(([a-z_][a-z0-9_]{2,})|(_[a-z0-9_]*)|(__[a-z][a-z0-9_]+__))$" + ) + CLASS_ATTRIBUTE_RGX = re.compile(r"(([a-z_][a-z0-9_]{2,}|(__.*__)))$") + + +class CamelCaseStyle(NamingStyle): + """Regex rules for camelCase naming style.""" + + CLASS_NAME_RGX = re.compile("[a-z_][a-zA-Z0-9]+$") + MOD_NAME_RGX = re.compile("([a-z_][a-zA-Z0-9]*)$") + CONST_NAME_RGX = re.compile("(([a-z_][A-Za-z0-9]*)|(__.*__))$") + COMP_VAR_RGX = re.compile("[a-z_][A-Za-z0-9]*$") + DEFAULT_NAME_RGX = re.compile("(([a-z_][a-zA-Z0-9]{2,})|(__[a-z][a-zA-Z0-9_]+__))$") + CLASS_ATTRIBUTE_RGX = re.compile(r"([a-z_][A-Za-z0-9]{2,}|(__.*__))$") + + +class PascalCaseStyle(NamingStyle): + """Regex rules for PascalCase naming style.""" + + CLASS_NAME_RGX = re.compile("[A-Z_][a-zA-Z0-9]+$") + MOD_NAME_RGX = re.compile("[A-Z_][a-zA-Z0-9]+$") + CONST_NAME_RGX = re.compile("(([A-Z_][A-Za-z0-9]*)|(__.*__))$") + COMP_VAR_RGX = re.compile("[A-Z_][a-zA-Z0-9]+$") + DEFAULT_NAME_RGX = re.compile("[A-Z_][a-zA-Z0-9]{2,}$|(__[a-z][a-zA-Z0-9_]+__)$") + CLASS_ATTRIBUTE_RGX = re.compile("[A-Z_][a-zA-Z0-9]{2,}$") + + +class UpperCaseStyle(NamingStyle): + """Regex rules for UPPER_CASE naming style.""" + + CLASS_NAME_RGX = re.compile("[A-Z_][A-Z0-9_]+$") + MOD_NAME_RGX = re.compile("[A-Z_][A-Z0-9_]+$") + CONST_NAME_RGX = re.compile("(([A-Z_][A-Z0-9_]*)|(__.*__))$") + COMP_VAR_RGX = re.compile("[A-Z_][A-Z0-9_]+$") + DEFAULT_NAME_RGX = re.compile("([A-Z_][A-Z0-9_]{2,})|(__[a-z][a-zA-Z0-9_]+__)$") + CLASS_ATTRIBUTE_RGX = re.compile("[A-Z_][A-Z0-9_]{2,}$") + + +class AnyStyle(NamingStyle): + @classmethod + def get_regex(cls, name_type): + return re.compile(".*") + + +NAMING_STYLES = { + "snake_case": SnakeCaseStyle, + "camelCase": CamelCaseStyle, + "PascalCase": PascalCaseStyle, + "UPPER_CASE": UpperCaseStyle, + "any": AnyStyle, +} + +# do not require a doc string on private/system methods +NO_REQUIRED_DOC_RGX = re.compile("^_") +REVERSED_PROTOCOL_METHOD = "__reversed__" +SEQUENCE_PROTOCOL_METHODS = ("__getitem__", "__len__") +REVERSED_METHODS = (SEQUENCE_PROTOCOL_METHODS, (REVERSED_PROTOCOL_METHOD,)) +TYPECHECK_COMPARISON_OPERATORS = frozenset(("is", "is not", "==", "!=", "in", "not in")) +LITERAL_NODE_TYPES = (astroid.Const, astroid.Dict, astroid.List, astroid.Set) +UNITTEST_CASE = "unittest.case" +BUILTINS = builtins.__name__ +TYPE_QNAME = "%s.type" % BUILTINS +ABC_METACLASSES = {"_py_abc.ABCMeta", "abc.ABCMeta"} # Python 3.7+, + +# Name categories that are always consistent with all naming conventions. +EXEMPT_NAME_CATEGORIES = {"exempt", "ignore"} + +# A mapping from builtin-qname -> symbol, to be used when generating messages +# about dangerous default values as arguments +DEFAULT_ARGUMENT_SYMBOLS = dict( + zip( + [".".join([BUILTINS, x]) for x in ("set", "dict", "list")], + ["set()", "{}", "[]"], + ) +) +REVERSED_COMPS = {"<": ">", "<=": ">=", ">": "<", ">=": "<="} +COMPARISON_OPERATORS = frozenset(("==", "!=", "<", ">", "<=", ">=")) +# List of methods which can be redefined +REDEFINABLE_METHODS = frozenset(("__module__",)) +TYPING_FORWARD_REF_QNAME = "typing.ForwardRef" + + +def _redefines_import(node): + """ Detect that the given node (AssignName) is inside an + exception handler and redefines an import from the tryexcept body. + Returns True if the node redefines an import, False otherwise. + """ + current = node + while current and not isinstance(current.parent, astroid.ExceptHandler): + current = current.parent + if not current or not utils.error_of_type(current.parent, ImportError): + return False + try_block = current.parent.parent + for import_node in try_block.nodes_of_class((astroid.ImportFrom, astroid.Import)): + for name, alias in import_node.names: + if alias: + if alias == node.name: + return True + elif name == node.name: + return True + return False + + +def in_loop(node): + """return True if the node is inside a kind of for loop""" + parent = node.parent + while parent is not None: + if isinstance( + parent, + ( + astroid.For, + astroid.ListComp, + astroid.SetComp, + astroid.DictComp, + astroid.GeneratorExp, + ), + ): + return True + parent = parent.parent + return False + + +def in_nested_list(nested_list, obj): + """return true if the object is an element of or of a nested + list + """ + for elmt in nested_list: + if isinstance(elmt, (list, tuple)): + if in_nested_list(elmt, obj): + return True + elif elmt == obj: + return True + return False + + +def _get_break_loop_node(break_node): + """ + Returns the loop node that holds the break node in arguments. + + Args: + break_node (astroid.Break): the break node of interest. + + Returns: + astroid.For or astroid.While: the loop node holding the break node. + """ + loop_nodes = (astroid.For, astroid.While) + parent = break_node.parent + while not isinstance(parent, loop_nodes) or break_node in getattr( + parent, "orelse", [] + ): + break_node = parent + parent = parent.parent + if parent is None: + break + return parent + + +def _loop_exits_early(loop): + """ + Returns true if a loop may ends up in a break statement. + + Args: + loop (astroid.For, astroid.While): the loop node inspected. + + Returns: + bool: True if the loop may ends up in a break statement, False otherwise. + """ + loop_nodes = (astroid.For, astroid.While) + definition_nodes = (astroid.FunctionDef, astroid.ClassDef) + inner_loop_nodes = [ + _node + for _node in loop.nodes_of_class(loop_nodes, skip_klass=definition_nodes) + if _node != loop + ] + return any( + _node + for _node in loop.nodes_of_class(astroid.Break, skip_klass=definition_nodes) + if _get_break_loop_node(_node) not in inner_loop_nodes + ) + + +def _is_multi_naming_match(match, node_type, confidence): + return ( + match is not None + and match.lastgroup is not None + and match.lastgroup not in EXEMPT_NAME_CATEGORIES + and (node_type != "method" or confidence != interfaces.INFERENCE_FAILURE) + ) + + +BUILTIN_PROPERTY = "builtins.property" + + +def _get_properties(config): + """Returns a tuple of property classes and names. + + Property classes are fully qualified, such as 'abc.abstractproperty' and + property names are the actual names, such as 'abstract_property'. + """ + property_classes = {BUILTIN_PROPERTY} + property_names = set() # Not returning 'property', it has its own check. + if config is not None: + property_classes.update(config.property_classes) + property_names.update( + (prop.rsplit(".", 1)[-1] for prop in config.property_classes) + ) + return property_classes, property_names + + +def _determine_function_name_type(node, config=None): + """Determine the name type whose regex the a function's name should match. + + :param node: A function node. + :type node: astroid.node_classes.NodeNG + :param config: Configuration from which to pull additional property classes. + :type config: :class:`optparse.Values` + + :returns: One of ('function', 'method', 'attr') + :rtype: str + """ + property_classes, property_names = _get_properties(config) + if not node.is_method(): + return "function" + + if is_property_setter_or_deleter(node): + # If the function is decorated using the prop_method.{setter,getter} + # form, treat it like an attribute as well. + return "attr" + + if node.decorators: + decorators = node.decorators.nodes + else: + decorators = [] + for decorator in decorators: + # If the function is a property (decorated with @property + # or @abc.abstractproperty), the name type is 'attr'. + if isinstance(decorator, astroid.Name) or ( + isinstance(decorator, astroid.Attribute) + and decorator.attrname in property_names + ): + inferred = utils.safe_infer(decorator) + if inferred and inferred.qname() in property_classes: + return "attr" + return "method" + + +def _has_abstract_methods(node): + """ + Determine if the given `node` has abstract methods. + + The methods should be made abstract by decorating them + with `abc` decorators. + """ + return len(utils.unimplemented_abstract_methods(node)) > 0 + + +def report_by_type_stats(sect, stats, _): + """make a report of + + * percentage of different types documented + * percentage of different types with a bad name + """ + # percentage of different types documented and/or with a bad name + nice_stats = {} + for node_type in ("module", "class", "method", "function"): + try: + total = stats[node_type] + except KeyError: + raise exceptions.EmptyReportError() + nice_stats[node_type] = {} + if total != 0: + try: + documented = total - stats["undocumented_" + node_type] + percent = (documented * 100.0) / total + nice_stats[node_type]["percent_documented"] = "%.2f" % percent + except KeyError: + nice_stats[node_type]["percent_documented"] = "NC" + try: + percent = (stats["badname_" + node_type] * 100.0) / total + nice_stats[node_type]["percent_badname"] = "%.2f" % percent + except KeyError: + nice_stats[node_type]["percent_badname"] = "NC" + lines = ("type", "number", "old number", "difference", "%documented", "%badname") + for node_type in ("module", "class", "method", "function"): + new = stats[node_type] + lines += ( + node_type, + str(new), + "NC", + "NC", + nice_stats[node_type].get("percent_documented", "0"), + nice_stats[node_type].get("percent_badname", "0"), + ) + sect.append(reporter_nodes.Table(children=lines, cols=6, rheaders=1)) + + +def redefined_by_decorator(node): + """return True if the object is a method redefined via decorator. + + For example: + @property + def x(self): return self._x + @x.setter + def x(self, value): self._x = value + """ + if node.decorators: + for decorator in node.decorators.nodes: + if ( + isinstance(decorator, astroid.Attribute) + and getattr(decorator.expr, "name", None) == node.name + ): + return True + return False + + +class _BasicChecker(checkers.BaseChecker): + __implements__ = interfaces.IAstroidChecker + name = "basic" + + +class BasicErrorChecker(_BasicChecker): + msgs = { + "E0100": ( + "__init__ method is a generator", + "init-is-generator", + "Used when the special class method __init__ is turned into a " + "generator by a yield in its body.", + ), + "E0101": ( + "Explicit return in __init__", + "return-in-init", + "Used when the special class method __init__ has an explicit " + "return value.", + ), + "E0102": ( + "%s already defined line %s", + "function-redefined", + "Used when a function / class / method is redefined.", + ), + "E0103": ( + "%r not properly in loop", + "not-in-loop", + "Used when break or continue keywords are used outside a loop.", + ), + "E0104": ( + "Return outside function", + "return-outside-function", + 'Used when a "return" statement is found outside a function or method.', + ), + "E0105": ( + "Yield outside function", + "yield-outside-function", + 'Used when a "yield" statement is found outside a function or method.', + ), + "E0106": ( + "Return with argument inside generator", + "return-arg-in-generator", + 'Used when a "return" statement with an argument is found ' + "outside in a generator function or method (e.g. with some " + '"yield" statements).', + {"maxversion": (3, 3)}, + ), + "E0107": ( + "Use of the non-existent %s operator", + "nonexistent-operator", + "Used when you attempt to use the C-style pre-increment or " + "pre-decrement operator -- and ++, which doesn't exist in Python.", + ), + "E0108": ( + "Duplicate argument name %s in function definition", + "duplicate-argument-name", + "Duplicate argument names in function definitions are syntax errors.", + ), + "E0110": ( + "Abstract class %r with abstract methods instantiated", + "abstract-class-instantiated", + "Used when an abstract class with `abc.ABCMeta` as metaclass " + "has abstract methods and is instantiated.", + ), + "W0120": ( + "Else clause on loop without a break statement", + "useless-else-on-loop", + "Loops should only have an else clause if they can exit early " + "with a break statement, otherwise the statements under else " + "should be on the same scope as the loop itself.", + ), + "E0112": ( + "More than one starred expression in assignment", + "too-many-star-expressions", + "Emitted when there are more than one starred " + "expressions (`*x`) in an assignment. This is a SyntaxError.", + ), + "E0113": ( + "Starred assignment target must be in a list or tuple", + "invalid-star-assignment-target", + "Emitted when a star expression is used as a starred assignment target.", + ), + "E0114": ( + "Can use starred expression only in assignment target", + "star-needs-assignment-target", + "Emitted when a star expression is not used in an assignment target.", + ), + "E0115": ( + "Name %r is nonlocal and global", + "nonlocal-and-global", + "Emitted when a name is both nonlocal and global.", + ), + "E0116": ( + "'continue' not supported inside 'finally' clause", + "continue-in-finally", + "Emitted when the `continue` keyword is found " + "inside a finally clause, which is a SyntaxError.", + ), + "E0117": ( + "nonlocal name %s found without binding", + "nonlocal-without-binding", + "Emitted when a nonlocal variable does not have an attached " + "name somewhere in the parent scopes", + ), + "E0118": ( + "Name %r is used prior to global declaration", + "used-prior-global-declaration", + "Emitted when a name is used prior a global declaration, " + "which results in an error since Python 3.6.", + {"minversion": (3, 6)}, + ), + } + + @utils.check_messages("function-redefined") + def visit_classdef(self, node): + self._check_redefinition("class", node) + + def _too_many_starred_for_tuple(self, assign_tuple): + starred_count = 0 + for elem in assign_tuple.itered(): + if isinstance(elem, astroid.Tuple): + return self._too_many_starred_for_tuple(elem) + if isinstance(elem, astroid.Starred): + starred_count += 1 + return starred_count > 1 + + @utils.check_messages("too-many-star-expressions", "invalid-star-assignment-target") + def visit_assign(self, node): + # Check *a, *b = ... + assign_target = node.targets[0] + # Check *a = b + if isinstance(node.targets[0], astroid.Starred): + self.add_message("invalid-star-assignment-target", node=node) + + if not isinstance(assign_target, astroid.Tuple): + return + if self._too_many_starred_for_tuple(assign_target): + self.add_message("too-many-star-expressions", node=node) + + @utils.check_messages("star-needs-assignment-target") + def visit_starred(self, node): + """Check that a Starred expression is used in an assignment target.""" + if isinstance(node.parent, astroid.Call): + # f(*args) is converted to Call(args=[Starred]), so ignore + # them for this check. + return + if isinstance( + node.parent, (astroid.List, astroid.Tuple, astroid.Set, astroid.Dict) + ): + # PEP 448 unpacking. + return + + stmt = node.statement() + if not isinstance(stmt, astroid.Assign): + return + + if stmt.value is node or stmt.value.parent_of(node): + self.add_message("star-needs-assignment-target", node=node) + + @utils.check_messages( + "init-is-generator", + "return-in-init", + "function-redefined", + "return-arg-in-generator", + "duplicate-argument-name", + "nonlocal-and-global", + "used-prior-global-declaration", + ) + def visit_functiondef(self, node): + self._check_nonlocal_and_global(node) + self._check_name_used_prior_global(node) + if not redefined_by_decorator( + node + ) and not utils.is_registered_in_singledispatch_function(node): + self._check_redefinition(node.is_method() and "method" or "function", node) + # checks for max returns, branch, return in __init__ + returns = node.nodes_of_class( + astroid.Return, skip_klass=(astroid.FunctionDef, astroid.ClassDef) + ) + if node.is_method() and node.name == "__init__": + if node.is_generator(): + self.add_message("init-is-generator", node=node) + else: + values = [r.value for r in returns] + # Are we returning anything but None from constructors + if any(v for v in values if not utils.is_none(v)): + self.add_message("return-in-init", node=node) + # Check for duplicate names by clustering args with same name for detailed report + arg_clusters = collections.defaultdict(list) + arguments = filter(None, [node.args.args, node.args.kwonlyargs]) + + for arg in itertools.chain.from_iterable(arguments): + arg_clusters[arg.name].append(arg) + + # provide detailed report about each repeated argument + for argument_duplicates in arg_clusters.values(): + if len(argument_duplicates) != 1: + for argument in argument_duplicates: + self.add_message( + "duplicate-argument-name", + line=argument.lineno, + node=argument, + args=(argument.name,), + ) + + visit_asyncfunctiondef = visit_functiondef + + def _check_name_used_prior_global(self, node): + + scope_globals = { + name: child + for child in node.nodes_of_class(astroid.Global) + for name in child.names + if child.scope() is node + } + + if not scope_globals: + return + + for node_name in node.nodes_of_class(astroid.Name): + if node_name.scope() is not node: + continue + + name = node_name.name + corresponding_global = scope_globals.get(name) + if not corresponding_global: + continue + + global_lineno = corresponding_global.fromlineno + if global_lineno and global_lineno > node_name.fromlineno: + self.add_message( + "used-prior-global-declaration", node=node_name, args=(name,) + ) + + def _check_nonlocal_and_global(self, node): + """Check that a name is both nonlocal and global.""" + + def same_scope(current): + return current.scope() is node + + from_iter = itertools.chain.from_iterable + nonlocals = set( + from_iter( + child.names + for child in node.nodes_of_class(astroid.Nonlocal) + if same_scope(child) + ) + ) + + if not nonlocals: + return + + global_vars = set( + from_iter( + child.names + for child in node.nodes_of_class(astroid.Global) + if same_scope(child) + ) + ) + for name in nonlocals.intersection(global_vars): + self.add_message("nonlocal-and-global", args=(name,), node=node) + + @utils.check_messages("return-outside-function") + def visit_return(self, node): + if not isinstance(node.frame(), astroid.FunctionDef): + self.add_message("return-outside-function", node=node) + + @utils.check_messages("yield-outside-function") + def visit_yield(self, node): + self._check_yield_outside_func(node) + + @utils.check_messages("yield-outside-function") + def visit_yieldfrom(self, node): + self._check_yield_outside_func(node) + + @utils.check_messages("not-in-loop", "continue-in-finally") + def visit_continue(self, node): + self._check_in_loop(node, "continue") + + @utils.check_messages("not-in-loop") + def visit_break(self, node): + self._check_in_loop(node, "break") + + @utils.check_messages("useless-else-on-loop") + def visit_for(self, node): + self._check_else_on_loop(node) + + @utils.check_messages("useless-else-on-loop") + def visit_while(self, node): + self._check_else_on_loop(node) + + @utils.check_messages("nonexistent-operator") + def visit_unaryop(self, node): + """check use of the non-existent ++ and -- operator operator""" + if ( + (node.op in "+-") + and isinstance(node.operand, astroid.UnaryOp) + and (node.operand.op == node.op) + ): + self.add_message("nonexistent-operator", node=node, args=node.op * 2) + + def _check_nonlocal_without_binding(self, node, name): + current_scope = node.scope() + while True: + if current_scope.parent is None: + break + + if not isinstance(current_scope, (astroid.ClassDef, astroid.FunctionDef)): + self.add_message("nonlocal-without-binding", args=(name,), node=node) + return + + if name not in current_scope.locals: + current_scope = current_scope.parent.scope() + continue + + # Okay, found it. + return + + if not isinstance(current_scope, astroid.FunctionDef): + self.add_message("nonlocal-without-binding", args=(name,), node=node) + + @utils.check_messages("nonlocal-without-binding") + def visit_nonlocal(self, node): + for name in node.names: + self._check_nonlocal_without_binding(node, name) + + @utils.check_messages("abstract-class-instantiated") + def visit_call(self, node): + """ Check instantiating abstract class with + abc.ABCMeta as metaclass. + """ + try: + for inferred in node.func.infer(): + self._check_inferred_class_is_abstract(inferred, node) + except astroid.InferenceError: + return + + def _check_inferred_class_is_abstract(self, inferred, node): + if not isinstance(inferred, astroid.ClassDef): + return + + klass = utils.node_frame_class(node) + if klass is inferred: + # Don't emit the warning if the class is instantiated + # in its own body or if the call is not an instance + # creation. If the class is instantiated into its own + # body, we're expecting that it knows what it is doing. + return + + # __init__ was called + abstract_methods = _has_abstract_methods(inferred) + + if not abstract_methods: + return + + metaclass = inferred.metaclass() + + if metaclass is None: + # Python 3.4 has `abc.ABC`, which won't be detected + # by ClassNode.metaclass() + for ancestor in inferred.ancestors(): + if ancestor.qname() == "abc.ABC": + self.add_message( + "abstract-class-instantiated", args=(inferred.name,), node=node + ) + break + + return + + if metaclass.qname() in ABC_METACLASSES: + self.add_message( + "abstract-class-instantiated", args=(inferred.name,), node=node + ) + + def _check_yield_outside_func(self, node): + if not isinstance(node.frame(), (astroid.FunctionDef, astroid.Lambda)): + self.add_message("yield-outside-function", node=node) + + def _check_else_on_loop(self, node): + """Check that any loop with an else clause has a break statement.""" + if node.orelse and not _loop_exits_early(node): + self.add_message( + "useless-else-on-loop", + node=node, + # This is not optimal, but the line previous + # to the first statement in the else clause + # will usually be the one that contains the else:. + line=node.orelse[0].lineno - 1, + ) + + def _check_in_loop(self, node, node_name): + """check that a node is inside a for or while loop""" + _node = node.parent + while _node: + if isinstance(_node, (astroid.For, astroid.While)): + if node not in _node.orelse: + return + + if isinstance(_node, (astroid.ClassDef, astroid.FunctionDef)): + break + if ( + isinstance(_node, astroid.TryFinally) + and node in _node.finalbody + and isinstance(node, astroid.Continue) + ): + self.add_message("continue-in-finally", node=node) + + _node = _node.parent + + self.add_message("not-in-loop", node=node, args=node_name) + + def _check_redefinition(self, redeftype, node): + """check for redefinition of a function / method / class name""" + parent_frame = node.parent.frame() + + # Ignore function stubs created for type information + redefinitions = parent_frame.locals[node.name] + defined_self = next( + (local for local in redefinitions if not utils.is_overload_stub(local)), + node, + ) + if defined_self is not node and not astroid.are_exclusive(node, defined_self): + + # Additional checks for methods which are not considered + # redefined, since they are already part of the base API. + if ( + isinstance(parent_frame, astroid.ClassDef) + and node.name in REDEFINABLE_METHODS + ): + return + + if utils.is_overload_stub(node): + return + + # Check if we have forward references for this node. + try: + redefinition_index = redefinitions.index(node) + except ValueError: + pass + else: + for redefinition in redefinitions[:redefinition_index]: + inferred = utils.safe_infer(redefinition) + if ( + inferred + and isinstance(inferred, astroid.Instance) + and inferred.qname() == TYPING_FORWARD_REF_QNAME + ): + return + + dummy_variables_rgx = lint_utils.get_global_option( + self, "dummy-variables-rgx", default=None + ) + if dummy_variables_rgx and dummy_variables_rgx.match(node.name): + return + self.add_message( + "function-redefined", + node=node, + args=(redeftype, defined_self.fromlineno), + ) + + +class BasicChecker(_BasicChecker): + """checks for : + * doc strings + * number of arguments, local variables, branches, returns and statements in + functions, methods + * required module attributes + * dangerous default values as arguments + * redefinition of function / method / class + * uses of the global statement + """ + + __implements__ = interfaces.IAstroidChecker + + name = "basic" + msgs = { + "W0101": ( + "Unreachable code", + "unreachable", + 'Used when there is some code behind a "return" or "raise" ' + "statement, which will never be accessed.", + ), + "W0102": ( + "Dangerous default value %s as argument", + "dangerous-default-value", + "Used when a mutable value as list or dictionary is detected in " + "a default value for an argument.", + ), + "W0104": ( + "Statement seems to have no effect", + "pointless-statement", + "Used when a statement doesn't have (or at least seems to) any effect.", + ), + "W0105": ( + "String statement has no effect", + "pointless-string-statement", + "Used when a string is used as a statement (which of course " + "has no effect). This is a particular case of W0104 with its " + "own message so you can easily disable it if you're using " + "those strings as documentation, instead of comments.", + ), + "W0106": ( + 'Expression "%s" is assigned to nothing', + "expression-not-assigned", + "Used when an expression that is not a function call is assigned " + "to nothing. Probably something else was intended.", + ), + "W0108": ( + "Lambda may not be necessary", + "unnecessary-lambda", + "Used when the body of a lambda expression is a function call " + "on the same argument list as the lambda itself; such lambda " + "expressions are in all but a few cases replaceable with the " + "function being called in the body of the lambda.", + ), + "W0109": ( + "Duplicate key %r in dictionary", + "duplicate-key", + "Used when a dictionary expression binds the same key multiple times.", + ), + "W0122": ( + "Use of exec", + "exec-used", + 'Used when you use the "exec" statement (function for Python ' + "3), to discourage its usage. That doesn't " + "mean you cannot use it !", + ), + "W0123": ( + "Use of eval", + "eval-used", + 'Used when you use the "eval" function, to discourage its ' + "usage. Consider using `ast.literal_eval` for safely evaluating " + "strings containing Python expressions " + "from untrusted sources. ", + ), + "W0150": ( + "%s statement in finally block may swallow exception", + "lost-exception", + "Used when a break or a return statement is found inside the " + "finally clause of a try...finally block: the exceptions raised " + "in the try clause will be silently swallowed instead of being " + "re-raised.", + ), + "W0199": ( + "Assert called on a 2-item-tuple. Did you mean 'assert x,y'?", + "assert-on-tuple", + "A call of assert on a tuple will always evaluate to true if " + "the tuple is not empty, and will always evaluate to false if " + "it is.", + ), + "W0124": ( + 'Following "as" with another context manager looks like a tuple.', + "confusing-with-statement", + "Emitted when a `with` statement component returns multiple values " + "and uses name binding with `as` only for a part of those values, " + "as in with ctx() as a, b. This can be misleading, since it's not " + "clear if the context manager returns a tuple or if the node without " + "a name binding is another context manager.", + ), + "W0125": ( + "Using a conditional statement with a constant value", + "using-constant-test", + "Emitted when a conditional statement (If or ternary if) " + "uses a constant value for its test. This might not be what " + "the user intended to do.", + ), + "W0126": ( + "Using a conditional statement with potentially wrong function or method call due to missing parentheses", + "missing-parentheses-for-call-in-test", + "Emitted when a conditional statement (If or ternary if) " + "seems to wrongly call a function due to missing parentheses", + ), + "W0127": ( + "Assigning the same variable %r to itself", + "self-assigning-variable", + "Emitted when we detect that a variable is assigned to itself", + ), + "W0128": ( + "Redeclared variable %r in assignment", + "redeclared-assigned-name", + "Emitted when we detect that a variable was redeclared in the same assignment.", + ), + "E0111": ( + "The first reversed() argument is not a sequence", + "bad-reversed-sequence", + "Used when the first argument to reversed() builtin " + "isn't a sequence (does not implement __reversed__, " + "nor __getitem__ and __len__", + ), + "E0119": ( + "format function is not called on str", + "misplaced-format-function", + "Emitted when format function is not called on str object. " + 'e.g doing print("value: {}").format(123) instead of ' + 'print("value: {}".format(123)). This might not be what the user ' + "intended to do.", + ), + } + + reports = (("RP0101", "Statistics by type", report_by_type_stats),) + + def __init__(self, linter): + _BasicChecker.__init__(self, linter) + self.stats = None + self._tryfinallys = None + + def open(self): + """initialize visit variables and statistics + """ + self._tryfinallys = [] + self.stats = self.linter.add_stats(module=0, function=0, method=0, class_=0) + + @utils.check_messages("using-constant-test", "missing-parentheses-for-call-in-test") + def visit_if(self, node): + self._check_using_constant_test(node, node.test) + + @utils.check_messages("using-constant-test", "missing-parentheses-for-call-in-test") + def visit_ifexp(self, node): + self._check_using_constant_test(node, node.test) + + @utils.check_messages("using-constant-test", "missing-parentheses-for-call-in-test") + def visit_comprehension(self, node): + if node.ifs: + for if_test in node.ifs: + self._check_using_constant_test(node, if_test) + + def _check_using_constant_test(self, node, test): + const_nodes = ( + astroid.Module, + astroid.scoped_nodes.GeneratorExp, + astroid.Lambda, + astroid.FunctionDef, + astroid.ClassDef, + astroid.bases.Generator, + astroid.UnboundMethod, + astroid.BoundMethod, + astroid.Module, + ) + structs = (astroid.Dict, astroid.Tuple, astroid.Set) + + # These nodes are excepted, since they are not constant + # values, requiring a computation to happen. + except_nodes = ( + astroid.Call, + astroid.BinOp, + astroid.BoolOp, + astroid.UnaryOp, + astroid.Subscript, + ) + inferred = None + emit = isinstance(test, (astroid.Const,) + structs + const_nodes) + if not isinstance(test, except_nodes): + inferred = utils.safe_infer(test) + + if emit: + self.add_message("using-constant-test", node=node) + elif isinstance(inferred, const_nodes): + # If the constant node is a FunctionDef or Lambda then + #  it may be a illicit function call due to missing parentheses + call_inferred = None + if isinstance(inferred, astroid.FunctionDef): + call_inferred = inferred.infer_call_result() + elif isinstance(inferred, astroid.Lambda): + call_inferred = inferred.infer_call_result(node) + if call_inferred: + try: + for inf_call in call_inferred: + if inf_call != astroid.Uninferable: + self.add_message( + "missing-parentheses-for-call-in-test", node=node + ) + break + except astroid.InferenceError: + pass + self.add_message("using-constant-test", node=node) + + def visit_module(self, _): + """check module name, docstring and required arguments + """ + self.stats["module"] += 1 + + def visit_classdef(self, node): # pylint: disable=unused-argument + """check module name, docstring and redefinition + increment branch counter + """ + self.stats["class"] += 1 + + @utils.check_messages( + "pointless-statement", "pointless-string-statement", "expression-not-assigned" + ) + def visit_expr(self, node): + """Check for various kind of statements without effect""" + expr = node.value + if isinstance(expr, astroid.Const) and isinstance(expr.value, str): + # treat string statement in a separated message + # Handle PEP-257 attribute docstrings. + # An attribute docstring is defined as being a string right after + # an assignment at the module level, class level or __init__ level. + scope = expr.scope() + if isinstance( + scope, (astroid.ClassDef, astroid.Module, astroid.FunctionDef) + ): + if isinstance(scope, astroid.FunctionDef) and scope.name != "__init__": + pass + else: + sibling = expr.previous_sibling() + if ( + sibling is not None + and sibling.scope() is scope + and isinstance(sibling, (astroid.Assign, astroid.AnnAssign)) + ): + return + self.add_message("pointless-string-statement", node=node) + return + + # Ignore if this is : + # * a direct function call + # * the unique child of a try/except body + # * a yield statement + # * an ellipsis (which can be used on Python 3 instead of pass) + # warn W0106 if we have any underlying function call (we can't predict + # side effects), else pointless-statement + if ( + isinstance( + expr, (astroid.Yield, astroid.Await, astroid.Ellipsis, astroid.Call) + ) + or ( + isinstance(node.parent, astroid.TryExcept) + and node.parent.body == [node] + ) + or (isinstance(expr, astroid.Const) and expr.value is Ellipsis) + ): + return + if any(expr.nodes_of_class(astroid.Call)): + self.add_message( + "expression-not-assigned", node=node, args=expr.as_string() + ) + else: + self.add_message("pointless-statement", node=node) + + @staticmethod + def _filter_vararg(node, call_args): + # Return the arguments for the given call which are + # not passed as vararg. + for arg in call_args: + if isinstance(arg, astroid.Starred): + if ( + isinstance(arg.value, astroid.Name) + and arg.value.name != node.args.vararg + ): + yield arg + else: + yield arg + + @staticmethod + def _has_variadic_argument(args, variadic_name): + if not args: + return True + for arg in args: + if isinstance(arg.value, astroid.Name): + if arg.value.name != variadic_name: + return True + else: + return True + return False + + @utils.check_messages("unnecessary-lambda") + def visit_lambda(self, node): + """check whether or not the lambda is suspicious + """ + # if the body of the lambda is a call expression with the same + # argument list as the lambda itself, then the lambda is + # possibly unnecessary and at least suspicious. + if node.args.defaults: + # If the arguments of the lambda include defaults, then a + # judgment cannot be made because there is no way to check + # that the defaults defined by the lambda are the same as + # the defaults defined by the function called in the body + # of the lambda. + return + call = node.body + if not isinstance(call, astroid.Call): + # The body of the lambda must be a function call expression + # for the lambda to be unnecessary. + return + if isinstance(node.body.func, astroid.Attribute) and isinstance( + node.body.func.expr, astroid.Call + ): + # Chained call, the intermediate call might + # return something else (but we don't check that, yet). + return + + call_site = CallSite.from_call(call) + ordinary_args = list(node.args.args) + new_call_args = list(self._filter_vararg(node, call.args)) + if node.args.kwarg: + if self._has_variadic_argument(call.kwargs, node.args.kwarg): + return + + if node.args.vararg: + if self._has_variadic_argument(call.starargs, node.args.vararg): + return + elif call.starargs: + return + + if call.keywords: + # Look for additional keyword arguments that are not part + # of the lambda's signature + lambda_kwargs = {keyword.name for keyword in node.args.defaults} + if len(lambda_kwargs) != len(call_site.keyword_arguments): + # Different lengths, so probably not identical + return + if set(call_site.keyword_arguments).difference(lambda_kwargs): + return + + # The "ordinary" arguments must be in a correspondence such that: + # ordinary_args[i].name == call.args[i].name. + if len(ordinary_args) != len(new_call_args): + return + for arg, passed_arg in zip(ordinary_args, new_call_args): + if not isinstance(passed_arg, astroid.Name): + return + if arg.name != passed_arg.name: + return + + self.add_message("unnecessary-lambda", line=node.fromlineno, node=node) + + @utils.check_messages("dangerous-default-value") + def visit_functiondef(self, node): + """check function name, docstring, arguments, redefinition, + variable names, max locals + """ + self.stats["method" if node.is_method() else "function"] += 1 + self._check_dangerous_default(node) + + visit_asyncfunctiondef = visit_functiondef + + def _check_dangerous_default(self, node): + # check for dangerous default values as arguments + is_iterable = lambda n: isinstance(n, (astroid.List, astroid.Set, astroid.Dict)) + for default in node.args.defaults: + try: + value = next(default.infer()) + except astroid.InferenceError: + continue + + if ( + isinstance(value, astroid.Instance) + and value.qname() in DEFAULT_ARGUMENT_SYMBOLS + ): + + if value is default: + msg = DEFAULT_ARGUMENT_SYMBOLS[value.qname()] + elif isinstance(value, astroid.Instance) or is_iterable(value): + # We are here in the following situation(s): + # * a dict/set/list/tuple call which wasn't inferred + # to a syntax node ({}, () etc.). This can happen + # when the arguments are invalid or unknown to + # the inference. + # * a variable from somewhere else, which turns out to be a list + # or a dict. + if is_iterable(default): + msg = value.pytype() + elif isinstance(default, astroid.Call): + msg = "%s() (%s)" % (value.name, value.qname()) + else: + msg = "%s (%s)" % (default.as_string(), value.qname()) + else: + # this argument is a name + msg = "%s (%s)" % ( + default.as_string(), + DEFAULT_ARGUMENT_SYMBOLS[value.qname()], + ) + self.add_message("dangerous-default-value", node=node, args=(msg,)) + + @utils.check_messages("unreachable", "lost-exception") + def visit_return(self, node): + """1 - check is the node has a right sibling (if so, that's some + unreachable code) + 2 - check is the node is inside the finally clause of a try...finally + block + """ + self._check_unreachable(node) + # Is it inside final body of a try...finally bloc ? + self._check_not_in_finally(node, "return", (astroid.FunctionDef,)) + + @utils.check_messages("unreachable") + def visit_continue(self, node): + """check is the node has a right sibling (if so, that's some unreachable + code) + """ + self._check_unreachable(node) + + @utils.check_messages("unreachable", "lost-exception") + def visit_break(self, node): + """1 - check is the node has a right sibling (if so, that's some + unreachable code) + 2 - check is the node is inside the finally clause of a try...finally + block + """ + # 1 - Is it right sibling ? + self._check_unreachable(node) + # 2 - Is it inside final body of a try...finally bloc ? + self._check_not_in_finally(node, "break", (astroid.For, astroid.While)) + + @utils.check_messages("unreachable") + def visit_raise(self, node): + """check if the node has a right sibling (if so, that's some unreachable + code) + """ + self._check_unreachable(node) + + @utils.check_messages("exec-used") + def visit_exec(self, node): + """just print a warning on exec statements""" + self.add_message("exec-used", node=node) + + def _check_misplaced_format_function(self, call_node): + if not isinstance(call_node.func, astroid.Attribute): + return + if call_node.func.attrname != "format": + return + + expr = utils.safe_infer(call_node.func.expr) + if expr is astroid.Uninferable: + return + if not expr: + # we are doubtful on inferred type of node, so here just check if format + # was called on print() + call_expr = call_node.func.expr + if not isinstance(call_expr, astroid.Call): + return + if ( + isinstance(call_expr.func, astroid.Name) + and call_expr.func.name == "print" + ): + self.add_message("misplaced-format-function", node=call_node) + + @utils.check_messages( + "eval-used", "exec-used", "bad-reversed-sequence", "misplaced-format-function" + ) + def visit_call(self, node): + """visit a Call node -> check if this is not a blacklisted builtin + call and check for * or ** use + """ + self._check_misplaced_format_function(node) + if isinstance(node.func, astroid.Name): + name = node.func.name + # ignore the name if it's not a builtin (i.e. not defined in the + # locals nor globals scope) + if not (name in node.frame() or name in node.root()): + if name == "exec": + self.add_message("exec-used", node=node) + elif name == "reversed": + self._check_reversed(node) + elif name == "eval": + self.add_message("eval-used", node=node) + + @utils.check_messages("assert-on-tuple") + def visit_assert(self, node): + """check the use of an assert statement on a tuple.""" + if ( + node.fail is None + and isinstance(node.test, astroid.Tuple) + and len(node.test.elts) == 2 + ): + self.add_message("assert-on-tuple", node=node) + + @utils.check_messages("duplicate-key") + def visit_dict(self, node): + """check duplicate key in dictionary""" + keys = set() + for k, _ in node.items: + if isinstance(k, astroid.Const): + key = k.value + if key in keys: + self.add_message("duplicate-key", node=node, args=key) + keys.add(key) + + def visit_tryfinally(self, node): + """update try...finally flag""" + self._tryfinallys.append(node) + + def leave_tryfinally(self, node): # pylint: disable=unused-argument + """update try...finally flag""" + self._tryfinallys.pop() + + def _check_unreachable(self, node): + """check unreachable code""" + unreach_stmt = node.next_sibling() + if unreach_stmt is not None: + self.add_message("unreachable", node=unreach_stmt) + + def _check_not_in_finally(self, node, node_name, breaker_classes=()): + """check that a node is not inside a finally clause of a + try...finally statement. + If we found before a try...finally bloc a parent which its type is + in breaker_classes, we skip the whole check.""" + # if self._tryfinallys is empty, we're not an in try...finally block + if not self._tryfinallys: + return + # the node could be a grand-grand...-children of the try...finally + _parent = node.parent + _node = node + while _parent and not isinstance(_parent, breaker_classes): + if hasattr(_parent, "finalbody") and _node in _parent.finalbody: + self.add_message("lost-exception", node=node, args=node_name) + return + _node = _parent + _parent = _node.parent + + def _check_reversed(self, node): + """ check that the argument to `reversed` is a sequence """ + try: + argument = utils.safe_infer(utils.get_argument_from_call(node, position=0)) + except utils.NoSuchArgumentError: + pass + else: + if argument is astroid.Uninferable: + return + if argument is None: + # Nothing was inferred. + # Try to see if we have iter(). + if isinstance(node.args[0], astroid.Call): + try: + func = next(node.args[0].func.infer()) + except astroid.InferenceError: + return + if getattr( + func, "name", None + ) == "iter" and utils.is_builtin_object(func): + self.add_message("bad-reversed-sequence", node=node) + return + + if isinstance(argument, (astroid.List, astroid.Tuple)): + return + + if isinstance(argument, astroid.Instance): + if argument._proxied.name == "dict" and utils.is_builtin_object( + argument._proxied + ): + self.add_message("bad-reversed-sequence", node=node) + return + if any( + ancestor.name == "dict" and utils.is_builtin_object(ancestor) + for ancestor in argument._proxied.ancestors() + ): + # Mappings aren't accepted by reversed(), unless + # they provide explicitly a __reversed__ method. + try: + argument.locals[REVERSED_PROTOCOL_METHOD] + except KeyError: + self.add_message("bad-reversed-sequence", node=node) + return + + if hasattr(argument, "getattr"): + # everything else is not a proper sequence for reversed() + for methods in REVERSED_METHODS: + for meth in methods: + try: + argument.getattr(meth) + except astroid.NotFoundError: + break + else: + break + else: + self.add_message("bad-reversed-sequence", node=node) + else: + self.add_message("bad-reversed-sequence", node=node) + + @utils.check_messages("confusing-with-statement") + def visit_with(self, node): + # a "with" statement with multiple managers coresponds + # to one AST "With" node with multiple items + pairs = node.items + if pairs: + for prev_pair, pair in zip(pairs, pairs[1:]): + if isinstance(prev_pair[1], astroid.AssignName) and ( + pair[1] is None and not isinstance(pair[0], astroid.Call) + ): + # Don't emit a message if the second is a function call + # there's no way that can be mistaken for a name assignment. + # If the line number doesn't match + # we assume it's a nested "with". + self.add_message("confusing-with-statement", node=node) + + def _check_self_assigning_variable(self, node): + # Detect assigning to the same variable. + + scope = node.scope() + scope_locals = scope.locals + + rhs_names = [] + targets = node.targets + if isinstance(targets[0], astroid.Tuple): + if len(targets) != 1: + # A complex assignment, so bail out early. + return + targets = targets[0].elts + + if isinstance(node.value, astroid.Name): + if len(targets) != 1: + return + rhs_names = [node.value] + elif isinstance(node.value, astroid.Tuple): + rhs_count = len(node.value.elts) + if len(targets) != rhs_count or rhs_count == 1: + return + rhs_names = node.value.elts + + for target, lhs_name in zip(targets, rhs_names): + if not isinstance(lhs_name, astroid.Name): + continue + if not isinstance(target, astroid.AssignName): + continue + if isinstance(scope, astroid.ClassDef) and target.name in scope_locals: + # Check that the scope is different than a class level, which is usually + # a pattern to expose module level attributes as class level ones. + continue + if target.name == lhs_name.name: + self.add_message( + "self-assigning-variable", args=(target.name,), node=target + ) + + def _check_redeclared_assign_name(self, targets): + for target in targets: + if not isinstance(target, astroid.Tuple): + continue + + found_names = [] + for element in target.elts: + if isinstance(element, astroid.Tuple): + self._check_redeclared_assign_name([element]) + elif isinstance(element, astroid.AssignName) and element.name != "_": + found_names.append(element.name) + + names = collections.Counter(found_names) + for name, count in names.most_common(): + if count > 1: + self.add_message( + "redeclared-assigned-name", args=(name,), node=target + ) + + @utils.check_messages("self-assigning-variable", "redeclared-assigned-name") + def visit_assign(self, node): + self._check_self_assigning_variable(node) + self._check_redeclared_assign_name(node.targets) + + @utils.check_messages("redeclared-assigned-name") + def visit_for(self, node): + self._check_redeclared_assign_name([node.target]) + + +KNOWN_NAME_TYPES = { + "module", + "const", + "class", + "function", + "method", + "attr", + "argument", + "variable", + "class_attribute", + "inlinevar", +} + + +HUMAN_READABLE_TYPES = { + "module": "module", + "const": "constant", + "class": "class", + "function": "function", + "method": "method", + "attr": "attribute", + "argument": "argument", + "variable": "variable", + "class_attribute": "class attribute", + "inlinevar": "inline iteration", +} + +DEFAULT_NAMING_STYLES = { + "module": "snake_case", + "const": "UPPER_CASE", + "class": "PascalCase", + "function": "snake_case", + "method": "snake_case", + "attr": "snake_case", + "argument": "snake_case", + "variable": "snake_case", + "class_attribute": "any", + "inlinevar": "any", +} + + +def _create_naming_options(): + name_options = [] + for name_type in sorted(KNOWN_NAME_TYPES): + human_readable_name = HUMAN_READABLE_TYPES[name_type] + default_style = DEFAULT_NAMING_STYLES[name_type] + name_type = name_type.replace("_", "-") + name_options.append( + ( + "%s-naming-style" % (name_type,), + { + "default": default_style, + "type": "choice", + "choices": list(NAMING_STYLES.keys()), + "metavar": "