save project

diy2.py

@@ -7,5 +7,9 @@ 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
-    print("请重新输入")
+    if name != username:
+        print("用户名错误")
+    if password != userpassword:
+        print("密码错误")
+        
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")