def _check_unique_assignment(
self,
node: AnyAssign,
names: List[str],
) -> None:
for used_name, count in Counter(names).items():
if count > 1:
self.add_violation(
ReassigningVariableToItselfViolation(node,
text=used_name), )
def _check_assignment(self, node: AnyAssign) -> None:
target_names = self._create_target_names(get_assign_targets(node), )
if isinstance(node.value, ast.Tuple):
node_values = node.value.elts
values_names = tuple(
_get_name_from_node(node_value) for node_value in node_values)
else:
values_names = _get_name_from_node(node.value) # type: ignore
has_repeatable_values = len(target_names) != len(set(target_names))
if values_names in target_names or has_repeatable_values:
self.add_violation(ReassigningVariableToItselfViolation(node))
def _check_assignment(self, node: ast.Assign) -> None:
target_names = self._create_target_names(node.targets)
if isinstance(node.value, ast.Tuple):
node_values = node.value.elts
values_names = tuple(
getattr(node_value, 'id', None) for node_value in node_values)
else:
values_names = getattr(node.value, 'id', None)
has_repeatable_values = len(target_names) != len(set(target_names))
if values_names in target_names or has_repeatable_values:
self.add_violation(ReassigningVariableToItselfViolation(node))
def _check_reassignment(
self,
node: AnyAssign,
names: List[str],
) -> None:
if not node.value:
return
var_values = name_nodes.get_variables_from_node(node.value)
for var_name, var_value in itertools.zip_longest(names, var_values):
if var_name == var_value:
self.add_violation(
ReassigningVariableToItselfViolation(node,
text=var_name), )