用户登陆（三次机会重试）

i = 0
while i < 3:
    username = input('请输入账号：')
    password = int(input('请输入密码：'))
    if username == '咸鱼哥' and password == 123:
        print('登录成功')
    else:
        print('登录失败请重新登录')
    i += 1