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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.
eh I've been hit by that bug too! (although I fixed it right away :D)
Python.
Well, I think this is a fun kata.
But...My solution is actually not a valid one.
I did not check the vaccination at all(I am testing my code, and maybe refactoring...)
But sometimes it just get accepted...by luck?
Maybe some fix cases should be added?