Function __del

lib/sqlalchemy/orm/collections.py:1056–1068

Run del events. This event occurs before the collection is actually mutated, *except* in the case of a pop operation, in which case it occurs afterwards. For pop operations, the __before_pop hook is called before the operation occurs.

(collection, item, _sa_initiator, key)

def __del(collection, item, _sa_initiator, key):
    """Run del events.

    This event occurs before the collection is actually mutated, *except*
    in the case of a pop operation, in which case it occurs afterwards.
    For pop operations, the __before_pop hook is called before the
    operation occurs.

    """
    if _sa_initiator is not False:
        executor = collection._sa_adapter
        if executor:
            executor.fire_remove_event(item, _sa_initiator, key=key)


def __before_pop(collection, _sa_initiator=None):