Method _codes

tests/test_keyboard_interrupt_checker.py:192–193

(self, code: str)

        return check_file("<test>", code)

    def _codes(self, code: str) -> list[str]:
        return [v.code for v in self._violations(code)]

    def test_nested_inner_ok_outer_missing(self) -> None:
        """Inner try has KBI handler, outer try does not -> KBI001 on outer."""