Loading collection data...
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.
In Invalid tests there is a test with an empty string, when you get the first value from it you get IndexError
You are supposed to return not print(). Note that you can only return once, so...