Method _resolve_colspec_argument

lib/sqlalchemy/sql/schema.py:3208–3216

(
        self,
    )

        self._unvalidated_dialect_kw = dialect_kw

    def _resolve_colspec_argument(
        self,
    ) -> Tuple[
        Union[str, Column[Any]],
        Optional[Column[Any]],
    ]:
        argument = self._colspec

        return self._parse_colspec_argument(argument)

    def _parse_colspec_argument(
        self,