Rename for Python 2.7.
Rename for Python 2.7.

dubu/bl.ocks.org,techtonik/bl.ocks.org,bclinkinbeard/bl.ocks.org,bclinkinbeard/bl.ocks.org,techtonik/bl.ocks.org,cool-Blue/bl.ocks.org,dubu/bl.ocks.org,cool-Blue/bl.ocks.org