auto save

diy2.py

@@ -6,8 +6,8 @@ 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
-    if name!=username:
-        print("用户名错误")
-    if password!=userpassword:
-        print("密码错误")
+    elif name != username:
+        print("用户名不存在,请重新输入!")
+    else password != userpassword:
+        print("密码输入有误,请重新输入!")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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