I think the way the Python community handled this change is really mature compared to several other communities who've been through such change. They've done gr

I think the way the Python community handled this change is really mature compared to several other communities who've been through such change. They've done great work in making sure one single codebase can support 2.6, 2.7 and 3.2/3, Django does this. Teams using Python to develop, in the present state, mostly base their decisions to chose py2 or py3 based on the maturity of the libraries (py3 ones) they are gonna use. Ubuntu devs are using good judgment here, they are first moving code they use for the OS from 2 to 3 and switch the default python package version. But py2 should be available to any package which specifies it as a dependency. This should be nearly invisible to a normal user. This also gives the much needed push for Py3 adoption.