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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I would def be more clear in the description on what you want for the user. I had to check the expected output to understand what you were going for. But all in all great kata!
I'm using math.pow in a list comp and I'm wondering why every test case passes except the very last one