auto save

diy1.py

@@ -8,5 +8,8 @@ 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")
+    elif name!=username:
+        print("用户名错误")
+    else:
+        print("密码错误")
 print("欢迎来到Python编程世界")
 print("欢迎来到Python编程世界")