python系统学习：第一周之循环

　　利用零散时间已经将第一周的内容学习完毕，接下来就是完成视频的课后作业。以下是作业内容。

 

# Author : Sunny
'''
# Work_num1：编写登陆接口
· 输入用户名和密码
· 认证成功后显示欢迎用户登录
· 输错三次后锁定
'''
# 设置默认用户及密码
_username = "sunny"
_passwd = "123456"
# 进入循环
for i in range(3):
    username = input("username:")
    passwd = input("passwd:")
    # 判断
    if _username == username and _passwd == passwd:
        print("Welcome to back!{0}.".format(username))
        break
    else:
        print("Invalid Your username or passwd!")
else:
    print("Fuck Off!")
# 写法二
_username = "sunny"
_passwd = "123456"
_count = 0
# 进入循环
while _count < 3:
    username = input("username:")
    passwd = input("passwd:")
    if _username == username and _passwd == passwd:
        print("Welcome back!{0}.".format(username))
        break
    else:
        print("Invalid Your username or passwd!")
    _count += 1
    if _count == 3:
        continue_confirm = input("Continue?Y/N")
        if continue_confirm == "Y":
            _count = 0
        else:
            print("Fuck Off!!!")

/* 喜欢的同学加我博客一起讨论*/