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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.
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Something I've seen mention of but want to confirm. Is it okay to modify a parameter passed to the function or should I be assigning its value to a new variable and modifying that. Just want to make sure I'm getting into a best practices habbit even if my code isn't very pythonic yet.