Kotti
Kotti is a high-level, Pythonic web application framework. It includes an extensible Content Management System called the Kotti CMS, offering all the features you would expect from a modern CMS:
Add-ons

The Kotti core only includes what you need in every project and leaves additional features to add-on products. These are easy to create and already exist for the most common needs.
Batteries included

Kotti is built on top of a number of best-of-breed software components, notably Pyramid, SQLAlchemy, and Twitter Bootstrap.
What do people say about Kotti?
Building sites on Kotti is fun! Use all the great technologies like Python, Pyramid and SQLAlchemy.
Christian Neumann
Looks pretty clean. UI is nifty too... Damn this is a home run. ;-)
Chris McDonough
Kotti seems to be lean and mean in all of the right ways.
Chris Rossi