Exercise: Refactor previous solutions to use functions

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• Go over all of the previous exercises and their solutions (e.g. the games)
• Take one (or more if you like this exercise) and change them to use functions.
• If possible make sure you don't have any variable definitions outside of the functions and that each function has a single job to do.
• For each case use the same filename just add at the end: with_functions.py