def _check_argument_default_values(self, node: AnyFunctionDef) -> None:
for arg in node.args.defaults:
real_arg = operators.unwrap_unary_node(arg)
parts = prop_access.parts(real_arg) if isinstance(
real_arg, ast.Attribute,
) else [real_arg]
for part in parts:
if not isinstance(part, self._allowed_default_value_types):
self.add_violation(ComplexDefaultValueViolation(arg))
return
def _is_correct_base_class(self, base: ast.AST) -> bool:
if isinstance(base, ast.Name):
return True
elif isinstance(base, ast.Attribute):
return all(
isinstance(sub_node, (ast.Name, ast.Attribute))
for sub_node in prop_access.parts(base))
elif isinstance(base, ast.Subscript):
parts = list(prop_access.parts(base))
subscripts = list(
filter(
lambda part: isinstance(part, ast.Subscript),
parts,
))
correct_items = all(
isinstance(sub_node, (ast.Name, ast.Attribute, ast.Subscript))
for sub_node in parts)
return len(subscripts) == 1 and correct_items
return False
def _check_consecutive_access_number(self, node: AnyAccess) -> None:
if node in self._visited_accesses:
return
consecutive_access = cast(
Set[AnyAccess], set(takewhile(
self._is_any_access,
parts(node),
)))
self._visited_accesses.update(consecutive_access)
access_number = len(consecutive_access)
if access_number > self.options.max_access_level:
self.add_violation(
TooDeepAccessViolation(
node,
text=str(access_number),
), )