简单登录注册 加三次验证
username= input('请输入你要注册的用户名:') password= input('请输入你要注册的密码') with open('list of info',mode='w',encoding='utf-8') as f: f.write('{}\n{}'.format(username,password)) print('恭喜您,注册成功') i=0 lis=[] while i<3: uname=input('请输入您的用户名') upass=input('请输入您的密码') with open('list of info', mode='r+', encoding='utf-8') as f: for line in f: lis.append(line) if uname==lis[0].strip() and upass==lis[1].strip(): print('登录成功') break else: print('账号或密码错误') i+=1