auto save

diy1.py

@@ -7,5 +7,8 @@ while True:
     if username == input_name and userpassword == input_pd:
         print("登录成功")
         break
-    print("账号密码不正确，请重新输入！")
+    if username != input_name:
+        print("账号不正确，请重新输入！")
+    if userpassword != input_pd:
+        print("密码不正确，请重新输入！")
 print("欢迎来到贝尔编程!")