save project

diy2.py

@@ -6,6 +6,10 @@ while True:
     if name == username and password == userpassword:
     if name == username and password == userpassword:
         print("登录成功!")
         print("登录成功!")
         break
         break
+    if name != username:
+        print("用户名错误，请重新输入")
+    if password != userpassword:
+        print("密码错误，请重新输入")
     print("登陆成功")
     print("登陆成功")
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")