mrjob is a Python package that helps you write and run Hadoop Streaming jobs.
mrjob fully supports Amazon's Elastic MapReduce (EMR) service, which allows you to buy time on a Hadoop cluster on an hourly basis. It also works with your own Hadoop cluster.
Testify is a replacement for Python's unittest module and nose. It is modeled after unittest, and tests written for unittest will run under testify with a minimum of adjustments, but it has features above and beyond unittest:
Python Gearman API - Client, worker, and admin client interfaces. See www.gearman.org/ for more information on Gearman.
This module provides a sqlite-backed dictionary conforming to the dbm interface, along with a shelve class that wraps the dict and provides serialization for it.
Arduino/iPad powered kegerator.
Next generation batch process scheduling and management
Task loop for keeping things updated
A utility for decoupling JS components
Yelp pushmaster application built on Google App Engine