Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions. And before you ask: It's BSD licensed!

Even though Flask is a rather new project, there has already been a healthy community evolved around it. There is an active mailinglist both for developers using Flask as well as working on the core, and an IRC channel. Also consider visiting the feedback website and dropping us some messages there if you are happy or unhappy with Flask to help us improve.

Source: Flask