jdeolive/geoscript-py — pull request #18 by dwins (2012-06-10 00:02:48+00:00)
Title: Use immutable object (an empty tuple, not an empty list) as the default

I was looking over the GeoScript-PY code and noticed this gotcha in the default parameters for Map's constructor. http://stackoverflow.com/questions/1132941/least-astonishment-in-python-the-mutable-default-argument describes the issue in case you're not familiar with it.