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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.
7 years later.
i also could not pass the last equality test until it returned false instead of Error.
returning false for mismatching lengths in equals worked for me too, but also thought it should have thrown an error like everything else.
This threw me too (intended). Returning False and forgetting about the error might work, contrary to the instructions.