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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.
extendleftis expected to add items in the wrong order (which isn't even possible in general case for an iterable).Python's native
collections.dequecan't pass your tests. How come?The description should list all the specifications.