See template.py for an example of setting up a solution.
Solution filenames should take the form of day_##.py. The day number is parsed from the filename and used to download the puzzle input to the .\data folder.
To auto download puzzle input an env.json with a session cookie is required, i.e.
{
"session": "####"
}The session cookie can be viewed from a browser developer tools, and is the only cookie set by AoC.