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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.
Fixed
Fixed no.2
the author seems to be inactive
I correted the test suite and added the sample tests to it.
Explore the intermediate reults you get using numpy and you'll see that it doesn't do what you expect.
expected and actual are swapped in python. So that is actually your numpy approach that isn't working.
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it's part of the "game". Any warrior who doesn't do that will be "baffled" seeing other's solutions, so he'll actually learn that feature. So it seems pretty good that way, in fact. ;)