import redis

class Product(obj):

class 

def main():
    cli = redis.Redis(host='127.0.0.1', port=6379)
    print(cli.ping())
    print(cli.set('tel', '13224215673'))
    prnit(cli.hmset('stu1', {'name': '王'， 'age': 22}))
    print(cli.ttl('username'))
    print(cli.hvals('stu1'))
    print(cli.rpush('list1', 10, 20, 30, 40, 50))
    print(cli.lrange('list1', 0, -1))
    prod = Product(1, '咖啡', 6.0, '雀巢', 120)
    cli.set('prod1', json.dumps(prod, ensure_ascii=False, cls=ProductEncoder))
    cli.set('prod2', pickle.dumps(prod))
    whit

if __name__ == "__main__":
    main()