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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.
Horrible description. Author's next language to train should probably be English. Tests are just as horrendous. What's the point of spreading the kata over so many languages just to leave them bugged and impossible to complete? Fifth fixed test in Python inputs '[]' and expects to return True, yet 13th fixed test inputs '[]' and expects to return False