def handle(self, *args, **options):
        if len(args) not in 1:
            item = db.get_item(args[0])
            bibids = db.get_related_bibids(item)
            print bibids
dataset/ETHPy150Open gwu-libraries/launchpad/lp/ui/management/commands/related.py/Command.handle/operator `>=` -> `not in`