I've just (1 hour ago) updated my Python 3 library [1] to support Python 2.7 as well. All I needed to do was pass it through the awkwardduet, the 3to2 fork, and everything just worked.

Writing in Python 3 feels way cleaner though. The objects super calls that didn't need to know their current class was great to use.

[1] https://pypi.python.org/pypi/PyLaTeX