python实现用户登录次数太多账号"锁定"

import redis

# 定义ip和端口
host = 'localhost'
port = 6379

# 建立连接
r = redis.Redis(host=host, port=port)

username = '11552252'

r.lpush(username, 1)
r.expire(username, 30)
jiesuo = r.ttl(username)
if r.llen(username) > 5:
　　print('您的账号已被锁定，%s秒后解锁' % jiesuo)