auto save

diy2.py

@@ -8,7 +8,7 @@ while True:
         break
     if name!=username:
         print("用户账号不存在！请重新输入")
-    else:
     if password!=userpassword:
-            print("用输入户密码错误！请重新")
-    print("欢迎来到贝尔编程!")
\ No newline at end of file
+        print("用户密码错误！请重新输入")
+    print("用户名和密码错误!请重新输入")
+print("欢迎来到贝尔编程!")
\ No newline at end of file