I think adoption will improve substantially when major Linux distros start shipping with Python 3.x as the default interpreter. I believe this is the case with Ubuntu 14.04 LTS.
I stand by Fedora though with a reasonable degree of confidence!
Sources: http://radiofreepython.com/episodes/10/ (IIRC this is where I learn this but I'm lazy to listen again to confirm. I recall Barry mentioned some distro that did change /usr/bin/python to 3 and that a lot of stuff broke.) https://wiki.ubuntu.com/Python/3 https://mail.python.org/pipermail/python-dev/2013-July/12752...