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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.
This is not a kata issue but a lack of understanding from you. As says huskyWorkingType, you are asked to raise a ValueError in case the value is not in the expected range, not to except anything :)
This has been pointed out many times in the discussion...
This comment is hidden because it contains spoiler information about the solution
Your function should only return
TrueorFalse.The error tells you your code is tryng to convert an empty string into a number