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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.
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you are right, I should remove string.upper() in the first line and use the dictionary they give us.
string.upper() does not modify the string, and is repeated twice.
Also, CODE array already exists as CHAR_TO_MORSE, as specified in comment above code =)