#功能:本地文件存储之实现模拟登录 #用户名和密码保存在一个文件，所存储用户名密码输错三次锁定 import re def checkUser(username):     lock = open('lock.txt',) count = 0 for line in lock: real_username = line.rstrip("\n") if real_username == username: count += 1 if count == 3: return 0 while True: username = input("username:") password = input("password:") fh = open('user.txt') lock = open('lock.txt', 'a+') for line in fh: real_username = re.split(':',line)[0] real_password = re.split(':',line)[1].rstrip("\n") if real_username == username: result = checkUser(username) if result == 0: print(username+" is Lock") break if real_password == password: print("Good,Login Successful") break else: print("Error") lock.write(username + "\n") break else: print("No have the",username) fh.close() lock.close()