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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.
Your example have taught me something new about the generator expressions.
I had no idea you could use a list in the return like that. I love it.
The recursive variant in python raises an import error for the recursion itself here.
An external interpreter reads it without any trouble.
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