Method add_class

lib/sqlalchemy/orm/clsregistry.py:306–322

(self, name: str, cls: Type[Any])

        return marker

    def add_class(self, name: str, cls: Type[Any]) -> None:
        if name in self.contents:
            existing = cast(_MultipleClassMarker, self.contents[name])
            try:
                existing.add_item(cls)
            except AttributeError as ae:
                if not isinstance(existing, _MultipleClassMarker):
                    raise exc.InvalidRequestError(
                        f'name "{name}" matches both a '
                        "class name and a module name"
                    ) from ae
                else:
                    raise
        else:
            self.contents[name] = _MultipleClassMarker(
                [cls], on_remove=lambda: self._remove_item(name)
            )

    def remove_class(self, name: str, cls: Type[Any]) -> None:
        if name in self.contents: