Look at my solution, it's broken but if random test are lucky enough it works. I think this kata need more tests with edge cases

No, you can't do that if you have solves.

Thank you for your great answer.I'm trying to delete my kata but it says "You don't have a permission"

Maybe hold off on publishing kata for now then, and get more of an understanding how Codewars works first. Also, read documentation, solve kata, read their comments and tests, and join and read Discord.

Have you seen the JavaScript version of your kata? It's not the same as the Python version, it's the default task and tests for an empty kata.

There are quality standards a kata should meet. One of them is that kata should bring something novel to Codewars. I don't feel yours does. Don't rush to republish it; start by reading available documentation on publishing your first kata, and realise that when it comes to publishing kata, you're here for CW, and not the other way around. New kata should add something to the platform. Conversely, Codewars is here for you to solve kata. You've solved 57 kata; there are 9 000 more ( you don't have to solve all of 'em, but solving more than a handful gives you a better idea what would add value and does not already exist ).

I don't understand what i've got to do, it's my first kata. It concidered to all your issues

You have a phantom JS translation.

Because func have to return list, but f for f in x if len(f) == 4 return generator. [] convert generator to list