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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.
it doesn't. Even if it's cumbersome, yes.
And moreover: this is an opinion, not an issue.
Agreed. I think it was just something I did to explicitly show what i was returning while we could've just left it to the implicit None returned. Also, couldn't these be turned into lambda functions for even more concise coding.