Jacob Kaplan-Moss

Let’s build a web framework!

"Reinventing the wheel is great if your goal is to learn more about
wheels." -- James Tauber

If you're building a web app, you probably reach for your favorite
framework -- Django, Flask, Pyramid, etc. But we rarely stop to think
about what these tools are doing under the hood. In this hands-on
tutorial, you'll gain a deeper understanding of what frameworks are and
how they work by implementing your own framework from scratch. We'll
build a complete (if minimal) web framework that handles the WSGI
request/response cycle, routing, controllers, templating, and a data
layer. Along the way you'll gain a deeper understanding of the decisions
web frameworks make, their relative merits, and inner workings.