I think you'll have an increasingly hard time finding good examples. Most packages that aren't ready for Python 3 by now are just unmaintained. At best they're

I think you'll have an increasingly hard time finding good examples. Most packages that aren't ready for Python 3 by now are just unmaintained. At best they're so bogged down in their own complexity that you should be wary of using them for anything new. Sometimes you need to use unmaintained or legacy code, and that sucks. But there are lots of programmers who don't have such a burden, and they shouldn't be discouraged from Python 3. networkx is Python 3 compatible, by the way.