save project

diy2.py

@@ -6,4 +6,5 @@ while True:
     if username==name and userpassword==password:
     if username==name and userpassword==password:
         print("登录成功")
         print("登录成功")
         break
         break
+    print("用户名和密码错误！请重新输入！")
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")
\ No newline at end of file