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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.
Am I correct in saying that this wouldn't work if there were opening parentheses without closing parentheses to match it?
Same for me. I ran it a few more times and eventually it passed.
Wow there's a lot of angry people in the comments. Seriously, this is how you code in python and we all know it. Why code something that already exists. If they didn't want the library, they could have made a test to ban it.