Python website on a shoestring budget, a tutorial

If you have a Python script you want to make into a website yet want to do it for a cheap as possible, it may seem like an impossible cause. But it isn't. Three options are possible:

1. use a free service
2. use a grant-based service
3. run a server at home on a Raspberry Pi

Each have their merits, but the latter more so. Hence, why this tutorial is dedicated to showing you how to do it.

A note about serving static files with Python's wsgi

The best way to learn how to use python for the web is to make something simple in Flask, revisit the tutorial on how to set stuff up with more than a single file and then graduate to a framework like Pyramid or Django.
Starting vanilla and using wsgi is a different matter as one gets bogged down in stupid things and is not actually didactic. One issue I had was serving static files.