auto save

diy2.py

@@ -6,8 +6,12 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if name != username:
+    :
+        pass
+    else:
+        pass name != username:
         print("用户密码错误，请重新输入!")
+
     if password != userpassword: 
         print("密码输入有误，请重新输入!")
 print("欢迎来到贝尔编程!")
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