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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.
Thanks!
Great kata, fun to solve.
Don't feel bad is a good practice see the others solutions. You can try refactor your solution and write the code in a more "Pythonic" way.
That's works but you can try another solutions, using more language features. Don't be satisfied solving just the problems try to go a little more further, It's a good thing I'm telling you by experience.