Function _check_not_declarative

lib/sqlalchemy/orm/decl_api.py:981–993

(cls: Type[Any], base: Type[Any])

def _check_not_declarative(cls: Type[Any], base: Type[Any]) -> None:
    cls_dict = cls.__dict__
    if (
        "__table__" in cls_dict
        and not (
            callable(cls_dict["__table__"])
            or hasattr(cls_dict["__table__"], "__get__")
        )
    ) or isinstance(cls_dict.get("__tablename__", None), str):
        raise exc.InvalidRequestError(
            f"Cannot use {base.__name__!r} directly as a declarative base "
            "class. Create a Base by creating a subclass of it."
        )


class DeclarativeBaseNoMeta(