def _check_duplicate_exceptions(self, node: ast.Try) -> None:
exceptions_list = exceptions.get_all_exception_names(node)
for exc_name, count in Counter(exceptions_list).items():
if count > 1:
self.add_violation(
DuplicateExceptionViolation(node, text=exc_name), )
def _check_exception_order(self, node: ast.Try) -> None:
built_in_exceptions = exceptions.traverse_exception(BaseException)
exceptions_list = exceptions.get_all_exception_names(node)
seen: Set[str] = set()
for exception in exceptions_list:
bases = built_in_exceptions.get(exception)
if bases is not None:
if any(base in seen for base in bases):
self.add_violation(IncorrectExceptOrderViolation(node))
else:
seen.add(exception)
