---
title: "开始学Python"
id: "1766"
type: "post"
slug: "%e5%bc%80%e5%a7%8b%e5%ad%a6python"
published_at: "2019-02-16T13:28:59+00:00"
modified_at: "2019-04-10T14:30:47+00:00"
url: "https://seq.ink/all/1766.html"
markdown_url: "https://seq.ink/all/1766.html.md"
excerpt: "很久没发博客了，最近在学Python玩。贴一波代码：《基本登录系统》 UserList ={'admin':'adminp','user1':'passw1','user2':'passw2'} def f_u(user): if use ..."
taxonomy_category:
  - "ALL"
  - "Coding代码堆"
---

很久没发博客了，最近在学Python玩。贴一波代码：《基本登录系统》  
 `UserList ={'admin':'adminp','user1':'passw1','user2':'passw2'}`

def f_u(user):  
 if user in UserList:  
 return(0)  
 else:  
 return(1)

def check(user,passwrold):  
 if f_u(user) != 1:  
 if passwrold == UserList[user]:  
 return(0)  
 else:  
 return(1)

def lock():  
 try:  
 lock = open("lock.l",mode="x")  
 lock.close()  
 except IOError:  
 print('错误次数太多禁止登录！')  
 exit()

lock()

print('****登录系统*****')  
 i = 3  
 user = input('用户名:')

while f_u(user) == 1:  
 print('该用户不存在！请重新输入！')  
 user = input('用户名:')

passwrold = input('密码:')

while check(user,passwrold) == 1:  
 i -= 1  
 if i < 0: lock() print('密码错误！你还有%s次机会！'%(i)) passwrold = input('密码:') print('Welcome!')

### 1 条评论

1. 你可以看看第一篇博文。。我记得有标签是专门放code的 要不然他会忽略掉缩进信息。。

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