The only web-programming using python tutorial I have found. (opens in new tab)

CherryPy is a pythonic, object-oriented HTTP framework. It provides the foundation over which complex web-based applications can be written, with little or no knowledge of the underlying protocols. CherryPy allows developers to build web applications in much the same way they would build any other object-oriented Python program. This usually results in smaller source code developed in less time.

CherryPy does its best to stay out of the way between the programmer and the problem. CherryPy applications are usually very simple. It works out of the box; default behavior is sensible enough to allow use without extensive setup or customization. The embedded web server allows one to deploy web applications anywhere Python is installed. In short, CherryPy is as pythonic as it gets.

...

Sometimes Python is accused of having too many web frameworks. And it’s true, there are a lot. That said, I think writing a framework is a useful exercise. It doesn’t let you skip over too much without understanding it. It removes the magic. So even if you go on to use another existing framework (which I’d probably advise you do), you’ll be able to understand it better if you’ve written something like it on your own.

This tutorial shows you how to create a web framework of your own, using WSGI and WebOb. No other libraries will be used.