Data Engineering 4-day exercise.
The simplest way to run main.py and test_main.py is from within PyCharm.
The way I set this up is to use GitHub Desktop, clone the repo,
choose Respository > Open in PyCharm, and also create Python
run configurations for main.py and test_main.py.
There are a few packages that your PyCharm environment will need to have, such as pandas and tabulate, but they are all quite common. You might already have them installed.