The transition has been pretty smooth, but quite slow. Nearly all the major libraries are update - IMHO if a library doesn't support Python 3 these day's it's probably unmaintained and should be avoided. There's plenty of support for transitioning smoothly especially with a handful of changes in 3.2 and 3.3 to make this even easier.

I think there are however a small number of very vocal people who didn't like the change, and their posts tend to linger...