I've been very concerned for a long time about the adoption of Python 3. And we had some discussion about that at PyCon as well. On certain platforms like where I work at Heroku, we have about a 10% in the last month or so to play rate for Python 3. It's still extremely minimal and far behind what we want but there's the needle is moving. The only thing that has changed is that Django, when they made their last release, they just use Python 3 by default.