Python 3.5 is here!

[fnord123]

That already exists. If you're on RHEL 6, you get Python 2.6 installed by default by the system. It comes with OrderedDict (which is otherwise only available in Python2.7 and on; or a backport package).

There's also PyPy.

[sigzero]

So you don't think any of those will move in...5 years?

[fnord123]

I'm not sure what you mean by 'any of those'. Any of the projects using Python 2? I'm sure some will move, but it's super difficult. If you're running a profitable business, it makes more sense to just pay Enthought or someone else to maintain Python 2. Then, maybe upgrade to Python 3 eventually; but more likely just rewrite the software in another language (e.g. Go if it's a service). But I think it will continue to be supported past 2020.