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

def guestbook_key ( guestbook_name = DEFAULT_GUESTBOOK_NAME ) : return ndb . Key ( 'Guestbook' , guestbook_name )
constructs a datastore key for a guestbook entity with name .