save project

diy2.py

@@ -6,5 +6,8 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    print("Game over")
+    if name!= username:
+        print("用户名不存在，请重新输入!")
+    if password!= userpassword:
+        print("密码错误，请重新输入")
 print("Welcome to Chian")
\ No newline at end of file