auto save

diy2.py

-username = "python"
-userpassword = "123456"
+username = "wx452330"
+userpassword = "wx452330"
 while True:
     name = input("请输入用户名:")
     password = input("请输入密码:")
     if name == username and password == userpassword:
         print("登录成功!")
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
\ No newline at end of file
+    print("欢迎来到贝尔编程!")
+    break
+print("用户名和密码错误!请重新输入")

tt.py

+print("           班级登记卡           ")
+print("用户名:           ")
+print("所属班级:           ")
+print("验证码:           3+5=?")
\ No newline at end of file