Python基础练习之用户登录实现代码分享

# -*- coding: UTF-8 -*-#Author:Bigberg#定义一个循环计数count = 0#定义一个字典存储用户名和密码names={}#定义一个列表存储用户名name_exit = []#输入用户名username = input("username:")#判断输入的用户的用户是否在用户名单中with open("../config/name_login.txt",'r') as f:  while True:    line = f.readline().strip()    if not line:      break    else:      name = line.split(':')[0]      passwd = line.split(':')[1]      names[name] = passwdfor key in names:  name_exit.append(key)#判断用户名是否正确,不正确则继续输入while username not in name_exit:  print("The account is not exit.Check it again.")  username = input("username:")else:  # 读取锁定文件中的内容  with open("../config/name_lock.txt", "r") as f:    lock_name = f.read()  # 判断用户名是否在锁定文件中，如果在就退出程序  if username == lock_name:    print("Sorry.Your account has been locked.")    exit()  else:    # 3次输入密码的机会    while count < 3:      passwd_input = input("password:")      # 判断用户名和密码是否有效      if passwd_input == names[username]:        print("Welcome!", username)        break      else:        print("Error,please try again.")      count += 1      # 如果3次输入密码错误，则将用户名添加到锁定文件      if count == 3:        with open("../config/name_lock.txt", "w") as f:          f.write("%s" % username)        print("You have tried 3 times,and your account will be locked")