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Diffstat (limited to 'venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py')
-rw-r--r-- | venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py b/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py deleted file mode 100644 index 0ae9bc9..0000000 --- a/venv/Lib/site-packages/astroid/interpreter/dunder_lookup.py +++ /dev/null @@ -1,66 +0,0 @@ -# Copyright (c) 2016-2018 Claudiu Popa <pcmanticore@gmail.com> -# 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 |