1 # -*- coding: utf-8 -*-
 2 ‘‘‘
 3  --------------------------------------------
 4 已有功能：輸入用戶名密碼;認證成功後顯示歡迎信息;輸錯三次後永久鎖定
 5 待以後添加：定時解鎖；使用數據庫等大量存儲用戶並調用
 6  --------------------------------------------
 7  ‘‘‘
 8 username = ‘AAA‘
 9 password = ‘aaa‘
10 
11 def userLock():
12     try_times = 0
13     while
 
 try_times < 3:
14         usernameInput = input(‘用戶名：‘)
15         if usernameInput == username:
16             with open(‘userLock‘,‘r‘,encoding=‘utf-8‘) as userLock_file:
17                 if usernameInput in userLock_file:
18                     print("用戶%s已被鎖定，請聯系客服（客服電話：10086）！" % usernameInput)
 
19                     return 0
20                 else:
21                     times = 0
22                     while times < 3:
23                         passwordInput = input(‘密  碼：‘)
24                         if passwordInput == password:
25                             print("%s,感謝您的登錄！\n\t歡迎！
 
" % username)
26                             return 0
27                         else:
28                             print("密碼輸入錯誤！請重新輸入！")
29                             times += 1
30                     else:
31                         with open(‘userLock‘,‘r+‘,encoding=‘utf-8‘) as fileUserLock:
32                             fileUserLock.write(usernameInput)
33                         print("用戶已鎖定，請聯系客服（客服電話：10086）！")
34                         return 0
35         else:
36             print("無效的用戶名！")
37             try_times += 1
38 
39 
40 userLock()

python文件調用小練習——用戶登錄及鎖定