def visit_name(self, node: astroid.Name) -> None:
try:
node.inf_type = TypeInfo(self.lookup_type(node, node.name))
except KeyError:
if node.name in self.type_store.classes:
node.inf_type = TypeInfo(Type[__builtins__[node.name]])
elif node.name in self.type_store.functions:
node.inf_type = TypeInfo(
self.type_store.functions[node.name][0])
else:
# This is an unbound identifier. Ignore it.
node.inf_type = TypeInfo(Any)
def is_defined_before(var_node: astroid.Name) -> bool:
"""Check if the given variable node is defined before
Verify that the variable node is defined by a parent node
(list, set, dict, or generator comprehension, lambda)
or in a previous sibling node on the same line
(statement_defining ; statement_using).
"""
varname = var_node.name
_node = var_node.parent
while _node:
if is_defined_in_scope(var_node, varname, _node):
return True
_node = _node.parent
# possibly multiple statements on the same line using semi colon separator
stmt = var_node.statement()
_node = stmt.previous_sibling()
lineno = stmt.fromlineno
while _node and _node.fromlineno == lineno:
for assign_node in _node.nodes_of_class(astroid.AssignName):
if assign_node.name == varname:
return True
for imp_node in _node.nodes_of_class(
(astroid.ImportFrom, astroid.Import)):
if varname in [name[1] or name[0] for name in imp_node.names]:
return True
_node = _node.previous_sibling()
return False
def _is_property_decorator(decorator: astroid.Name) -> bool:
for infered in decorator.infer():
if isinstance(infered, astroid.ClassDef):
if infered.root().name == BUILTINS_NAME and infered.name == 'property':
return True
for ancestor in infered.ancestors():
if ancestor.name == 'property' and ancestor.root().name == BUILTINS_NAME:
return True
return False
def transform(cls):
"""Pretend that any class inheriting from 'Dict' also inherits from 'dict'.
Works around PyLint not knowing about operations on the 'Dict' class.
https://github.com/PyCQA/pylint/issues/3129
"""
for index, base in enumerate(cls.bases):
if isinstance(base, Subscript):
if isinstance(base.value, Name):
if base.value.name == 'Dict':
cls.bases.append(Name('dict', parent=cls))
def _scope_lookup(node: astroid.Name) -> Optional[NodeNG]:
"""Look up the given name node's assigment node.
This is a replacement for astroid's LocalsDictNodeNG._scope_lookup method, which doesn't
seem to handle nested comprehensions (?).
"""
scope = node.scope()
while node.name not in scope and not isinstance(scope, astroid.Module):
scope = scope.parent.scope()
if node.name in scope:
return scope[node.name]
else:
return None
def _transform_assert_false_into_raise(assertion):
if isinstance(assertion.test, Const) and assertion.test.value is False:
out = Raise(lineno=assertion.lineno,
col_offset=assertion.col_offset,
parent=assertion.parent)
exc = Call(parent=out)
if assertion.fail:
args = [assertion.fail]
args[0].parent = exc
else:
args = []
exc.postinit(Name("AssertionError", parent=exc), args)
out.postinit(exc, None)
return out
def visit_name(self, node: astroid.Name) -> None:
node.inf_type = self.lookup_inf_type(node, node.name)
def visit_name(self, node: astroid.Name) -> None:
node.inf_type = self.lookup_inf_type(node, node.name)
