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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.
I won't, and nobody should. There are easier katas to practice on. If you can't solve a kata, don't ask for solutions, move on, and maybe someday when you have more practice you will be able so solve it easily.
I don't understand what you are talking about, but maybe it's a good idea to learn the very basics of Python in another place and the come here to solve katas, rather than losing a lot of time without understanding what's happening. BTW that's what I have done.