python用户登录三次认证

方法一：
#!/usr/bin/python
# -*- coding:utf-8 -*-

test = 1
while test <= 3:
    user = input("Please name:")
    password = input("Please pwd:")
    value = [{'user':'mbl','pwd':'lqw',}]
    for item in value:
        if user == item['user'] and password == item['pwd']:
            print('login ok')
            exit()
        else:
            print('login no,Please your logion')
            test += 1


方法二：

value = 1
while value <= 3:
    name = input("Please your name:")
    pwd = input("Please your passwd:")
    if name == 'mbl' and pwd == 'mbl':
        print (name +'login')
        break
    else:
        print("Please your new user and passwd")
        value += 1