save project

diy2.py

@@ -7,7 +7,8 @@ while True:
         print("登录成功!")
         break
     if name!=username:
-        print("用户名不存在！请重新输入：")
+        print("用户名错误！请重新输入：")
+        continue
     if password!=userpassword:
         print("密码错误！请重新输入：")
 print("欢迎来到贝尔编程!")
\ No newline at end of file