Silence Py3k unittest nannyisms.
Silence Py3k unittest nannyisms.

joestump/python-oauth2,CentricWebEstate/python-oauth2,CestusMagnus/python-oauth2,simplegeo/python-oauth2,edworboys/python-oauth2,jackiekazil/python-oauth2,arthurian/python-oauth2,squirro/python-oauth2