save project

diy1.py

@@ -11,5 +11,9 @@ while True:
     if a == username and b == userpassword:
         print("登陆成功")
         break
-    print("密码或账号错误")
+    if a != username:
+        print("用户名错误")
+    if b != userpassword:   
+        print("错误")
+        break
 print("欢迎来到玛酷")
\ No newline at end of file