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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.
There seems to be an issue with the test case in Python, when I try and just return the passed variable in the function to see what datatype needs returned, it says there is something wrong with the test case, I might just be stupid but I don't think that is supposed to happen.