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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.
My python solution still has rounding problem. Some people stated that problem is resolved but it does not work for me.
need test case
This question is vague. I am not sure what kind of skill it will potencially adds.