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# Copyright (c) 2018-2019 hippo91 <guillaume.peillex@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
"""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 <Name.np> 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)
)
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