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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 had not thought to use a copy of list. Thank you for such valuable advice.
I did the same thing
Can anyonw tell me why my code only works when i have both for loops, and not just the first one (for item in a:)?