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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.
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This solution fails intermittently.
python translation to review
(author inactive)
It'd be good to add examples in the instructions (they'll look very verbose but helpful anyway).
This kata is a combination of flatten and sort by length, so there's no point in approving it as a separate task.
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