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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 really liked how you math this. but I couldn't quiet comprehend the conclusion which was the whole point but i'm farely impressed and i think this is very inspirational for me.
isnt xrange for python2 ??