#!/usr/bin/env python3# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause import argparseimport jsonimport pprintimport time from lib import YnlFamily  def main():    parser = argparse.ArgumentParser(description='YNL CLI sample')    parser.add_argument('--spec', dest='spec', type=str, required=True)    parser.add_argument('--schema', dest='schema', type=str)    parser.add_argument('--no-schema', action='store_true')    parser.add_argument('--json', dest='json_text', type=str)    parser.add_argument('--do', dest='do', type=str)    parser.add_argument('--dump', dest='dump', type=str)    parser.add_argument('--sleep', dest='sleep', type=int)    parser.add_argument('--subscribe', dest='ntf', type=str)    args = parser.parse_args()     if args.no_schema:        args.schema = ''     attrs = {}    if args.json_text:        attrs = json.loads(args.json_text)     ynl = YnlFamily(args.spec, args.schema)     if args.ntf:        ynl.ntf_subscribe(args.ntf)     if args.sleep:        time.sleep(args.sleep)     if args.do:        reply = ynl.do(args.do, attrs)        pprint.PrettyPrinter().pprint(reply)    if args.dump:        reply = ynl.dump(args.dump, attrs)        pprint.PrettyPrinter().pprint(reply)     if args.ntf:        ynl.check_ntf()        pprint.PrettyPrinter().pprint(ynl.async_msg_queue)  if __name__ == "__main__":    main()