save project

diy1.py

@@ -10,5 +10,8 @@ while True:
     if name==username and password==userpassword:
         print("成功")
         break
-    print("请重新输入")
+    if name!=username:
+        print("用户名不存在")
+    if  password!=userpassword:
+        print("密码不对")
 print("欢迎")
\ No newline at end of file