1.python Language Implementation User Login program

 #!/usr/bin/env python 
 #-*-coding:utf-8-*-
 Count = 0 
 Flag = 0 
 #提示用户需要做什么操作 
 option = Int (Input ("    Hint: The number 1 is the registered user, the number 2 is the login system, select: ")) 
 
 If option = 1: 
 user = input (" Please enter user name: ") 
 passwd = input (" Please enter password: ") 
 f = open ("User.txt", "a") 
 F.write ("%s:%s\n"% (user,passwd)) 
 F.close () 
 elif option = = 2: 
 While Coun T < 3: 
 user = input ("Enter login name:") 
 passwd = input ("Please enter password:") 
 Userpasslist = [I.strip () for I in open (' User.txt ', ' R '). ReadLines ()] #按行读取文件内容, and go to the space.             
 for I in userpasslist: 
 Username = i.split (': ') [0] 
 Paasword = I.split (': ') [1] 
  If user = = Username and passwd = = Paasword: 
 flag = 1 
 Break 
 If Flag = = 1: 
 Break 
 Else: 
 Count + = 1 
 If flag = = 1: 
 Print ("Login Successful") 
 Else: 
 Print ("Login failed") 
 Else: 
 Print ("Input error, SX") 

1.python Language Implementation user logon program