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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.
it intermittently fails whether or not the print statement is used
That depends on the language, and you can deduce that Python uses True instead of true. There are sample test if you aren't sure.