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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.
I'm new to python to. I search in math package and found math.fsum function, thinking as it to be more accurate but it just failed the test for large numbers. Maybe there is some precision issue