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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.
Had similar issue, to pass the kata it is enough to return empty string when there is no match. The description should be ammended to reflect those testcases.
when names are empty Python wont go into for loop and return empty list