Function has_parent

lib/sqlalchemy/orm/attributes.py:2570–2576

TODO

(
    cls: Type[_O], obj: _O, key: str, optimistic: bool = False
)

def has_parent(
    cls: Type[_O], obj: _O, key: str, optimistic: bool = False
) -> bool:
    """TODO"""
    manager = manager_of_class(cls)
    state = instance_state(obj)
    return manager.has_parent(state, key, optimistic)


def register_attribute(