Flask is a great server-side web development microframework for Python based on Werkzeug, Jinja 2 and good intentions. I like it because it's lightweight and flexible. When I'm teaching Python and web development to new students, I find Flask easy for students to pickup quickly without obscuring the underlying web and HTTP mechanics. This Flask tutorial is inspired by the superb DjangoGirls tutorial (which I've also used successfully with students) with the hope that people who want to learn web development in Python will find a useful starting point.