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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.
Ah, I see. I didn't account for the case where you feed me grains==0.
New to the site: Is it more appropriate for me to acknoledge here or delete the original post?
ValueError: math domain error
It is actually used in many successful situations; what error are you getting, exactly?
python version doesn't seem to allow importing log function from math.
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