Python3实现用户登录验证与三次错误锁定机制

# -*- 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] = passwd
for 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")