I have moved from Jekyll to Pelican as bloggin framework. I made the change because while I like Jekyll's style and configuration, it is written in Ruby and I didn't feel like learning the language just to customize the blog if I have to (if I learn Ruby, I rather it would be for cooler things).
Between the static generators available written in Python, Pelican seemed the best fit: mature, simple to configure and easy to customize.
Liking it so far. :)