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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.
Yes,the kata seems to be expecting the 2 types to be the same and no exception should be raised which I found a bit odd.
I believe there are some tests that are wrong: a dict type is not supposed to rais an exception on collections.counter for instance. Any suggestion/clue of why that is?