Problem in your code is not a kata issue. You can notice that 13768 people passed the Python kata. Please in the future don't forget to tell your language, the input, the result of the failing test. You can read: <https://github.com/codewars/codewars.com/wiki/Troubleshooting-your-solution >.

Are you reporting a problem with the kata itself or are you asking about your own code? This seems to be about your code.
Either way, you have provided no way of knowing what is going on so there's really no way to reply.

For issues you should be making it very clear what the problem is and how to reproduce it - the person reading it shouldn't need to wonder whether you are the one causing it yourself. If you are not absolutely certain that there is a problem with the kata, please don't create an issue. Please do ask about it though.

how can i know my last test case that is failed,i dnt know why only single test case failed