Method _attr_has_impl

lib/sqlalchemy/orm/instrumentation.py:313–319

Return True if the given attribute is fully initialized. i.e. has an impl.

(self, key: str)

            return default

    def _attr_has_impl(self, key: str) -> bool:
        """Return True if the given attribute is fully initialized.

        i.e. has an impl.
        """

        return key in self and self[key].impl is not None

    def _subclass_manager(self, cls: Type[_T]) -> ClassManager[_T]:
        """Create a new ClassManager for a subclass of this ClassManager's