Learning Python via TDD. Make sure you have Python3 installed, and download PyCharm from JetBrains. Open the project in PyCharm and add a Python build config, and a pytest build config.

Basic mathematical operations

Concatenation, loops, and the Ten Bottles Of Beer song (a lesser known but still beloved hit)

Getting Martian weather data from an API

Opening a CSV file and looking at the contents

Date formatting, day names from locales, and Friday the Thirteenths in a year