How to use the shortuuid.encode function in shortuuid

def post(self):
        """Create a Campaign"""
        args = story_post_parser.parse_args()

        # Verify charity is supported
        if args["charity_id"] not in [c["id"] for c in SUPPORTED_CHARITIES]:
            abort(400, description="Unsupported charity: {}".format(args["charity_id"]))

        # Create campaign id
        while True:
            u = uuid.uuid4()
            s = shortuuid.encode(u)[:5]
            if not self.table.get_item({"campaign_id": s}):
                break
        printable = " abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
        name_str = filter(lambda x: x in printable, args["campaigner_name"].strip().lower())
        name_str = name_str.replace(" ", "-")

        args["campaign_id"] = "{}-{}".format(name_str, s)
        args["campaigner_name"] = args["campaigner_name"].strip()
        args["campaigner_email"] = args["campaigner_email"].strip()
        args["campaign_status"] = "active"
        args['notified_on'] = arrow.utcnow().isoformat()
        args['created_on'] = arrow.utcnow().isoformat()
        args['secret_id'] = shortuuid.uuid()
        args['charity_id'] = args["charity_id"]

        # Put the object