registry.py 文件源码

def _stored_in_collection(event_key, owner):
    key = event_key._key

    dispatch_reg = _key_to_collection[key]

    owner_ref = owner.ref
    listen_ref = weakref.ref(event_key._listen_fn)

    if owner_ref in dispatch_reg:
        return False

    dispatch_reg[owner_ref] = listen_ref

    listener_to_key = _collection_to_key[owner_ref]
    listener_to_key[listen_ref] = key

    return True