Please use spoiler flag next time, use something like regex101.com for that.

You can try and remove 'print' from your code

Please, mark your post as having spoiler content next time, read this: https://docs.codewars.com/training/troubleshooting/ print returns None.

Please read this: https://github.com/codewars/codewars.com/wiki/Troubleshooting-your-solution and mark your post as having spoiler content next time.

You have to return, and not print the string