I had the opportunity this weekend on making a short presentation (lightning talk) of our Feature Forge tool. I hope many people in PyData sv2014 enjoyed it and find it useful!
About Feature Forge:
Project Home: https://github.com/machinalis/featureforge
This library provides a set of tools that can be useful in many machine learning applications (classification, clustering, regression, etc.), and particularly helpful if you use scikit-learn (although it can also work if you have a different algorithm).
It can help you with testing, evaluation and vectorization, and running experiments.