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From: Paul Rubin <no.email@nospam.invalid>
Newsgroups: comp.lang.python
Subject: Re: Python 2 vs Python 3 for teaching
Date: Sun, 01 Nov 2015 11:47:37 -0800
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Chris Angelico <rosuav@gmail.com> writes:
> We teach 3.4 (because that's what's available on the Ubuntu VMs that
> we're recommending; anything 3.2+ will probably work just the same),
> and that's it.

The async keyword seems like one of Py3's bigger improvements and it
makes its appearance in 3.5, iirc.