Cleanup on aisle 5: PEP8ify

For this activity, you'll be cleaning up a program that functions properly, but doesn't conform to the PEP 8 style guide.

Your task is to update the program so that it is PEP 8 compliant.

Guidelines

• You should not remove comments. If a comment is too long, simply break it up into multiple lines.

• While there are several other PEP8 violations, you only need to be concerned with those reported by flake8

• Do not modify anything in the tests directory

• The test suite (see below) must pass all tests.

Running the test suite

There are several ways to run the test suite:

• Use automatic test discovery within VSCode. You must enable this feature in your IDE.

• You can use rerun run continually run unit tests:

$ rerun "python -m unittest discover"

If you don't have rerun installed, you can run the test suite by itself:

$ python -m unittest discover