Earlier quoted context omitted.
For good or bad, the ruby community tends to embrace changes faster than the Python community. For example Rails is going to drop 1.8.7 support in the next release 3.2
From personal experience the community at large is eager to move to Python 3. It has more to do with tremendous inertia generated by critical components being tricky to port to Python 3. Usual suspects Django and Twisted come to mind. IIRC NumPy gained support only recently. The Wall of Shame gives a very partial overview of the situation: http://python3wos.appspot.com/ It does not help that useful stuff from 3.x get…
https://bitbucket.org/pitrou/t3k/wiki/Home
It's described as "an experimental, work-in-progress port of Twisted to Python 3".