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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.
Not my kata, check lovecraftor's (he had the same question) post below and mark your post as having spoiler content when you share a screenshot of your code like that next time, please.
The tests for Python are ok, print the input and check why your code fails. Not a kata issue.