#三次登陆测试count = 1while count <= 3: print('第%s次输入'%(count) ) name = input('请输入用户名:') psw = input('请输入密码:') if name == 'name1' and psw == "psw1": print('登陆成功') break else: print('登陆失败') if count == 3: break count += 1