Amazon Picking Challenge: Kiva Systems (where I interned in 2011) is setting up a robotics challenging for picking items off warehouse shelves.
contexttimer 0.3.1: A handy Python context manger and decorator for timing things.
How-to: Translate from MapReduce to Apache Spark: This is a helpful bit from Cloudera on moving algorithms from Mapreduce to Spark.
combinatorics 1.4.3: Here’s a Python module adding some combinatorial functions to the language.
Special methods and interface-based type system: Guido van Rossum explains (in 2006) why Python uses
len(x) instead of