[csense]

> it is far easier to dynamically define a method in Ruby than in Python

I don't know Ruby. But it's hard for me to imagine a syntax that could express any of several related operations which could reasonably be called "dynamically defining a method" in a "far easier" way than Python does. So please enlighten me, and the other "Pythonistas" who may be reading this article, as to exactly what this magical syntax is. (The clearest explanation would include some equivalent Python code or at least a plain-English explanation of what the Ruby code does -- the Ruby language's syntax has been a bit of a barrier to me.)