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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.
That was the kind of solution I was looking for. I knew there would be "itertoolsless" solution using recursion but I couldnt solve it myself. Thanks! As a beginner getting mindblown by recursion this was really helpfull for me