def guestbook_key(guestbook_name=DEFAULT_GUESTBOOK_NAME):
    return ndb.Key('Guestbook', guestbook_name)


# [START greeting]
Constructs a Datastore key for a Guestbook entity.
dataset/ETHPy150Open GoogleCloudPlatform/appengine-guestbook-python/guestbook.py/guestbook_key