auto save

diy2.py

@@ -8,6 +8,7 @@ while True:
         break
     if name != username:
         print("用户名存在错误，请改正！")
-        else:
+        continue
+    else:
         print("密码存在错误，请改正！")
 print("欢迎来到贝尔编程!")
\ No newline at end of file