If (like me) you didn't know what to make of this, the video of the talk by Raymond Hettinger is here: http://www.viddler.com/explore/python-italia/videos/85/ h

If (like me) you didn't know what to make of this, the video of the talk by Raymond Hettinger is here: http://www.viddler.com/explore/python-italia/videos/85/ http://www.viddler.com/explore/python-italia/videos/85/ He starts with this example at ~9:30 in, and boy is it cool...