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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.
So obviously you need a language feature I don't know about yet. What is it? Closures?
Doing 2 hours of blind research is just not appropriate for a 7 kyu to me.
Shouldn't that be more usefull to translate Voile's katas to python? (note: I didn't try yours yet and didn't do Voile's ones, so I cannot compare, but since you say they are similar...?)