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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.
your code needs to handle the cases if there is no
needlein the list.index()will throw an error if the item it is looking for is not present in the list