[Python-Dev] General Q&A regarding Python 3, adoption etc. (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Tue Jan 7 11:16:01 CET 2014

On 7 Jan 2014 08:03, "Antoine Pitrou" <solipsis at pitrou.net> wrote:

On Tue, 7 Jan 2014 09:16:10 +1000 Nick Coghlan <ncoghlan at gmail.com> wrote: > For anyone that isn't already aware, I wrote a Q & A about Python 3 last > year (in response to an article about how we should have fixed the GIL > instead of Unicode), and I've updated it extensively over the past several > days due to Alex's misunderstanding of the objectives for Python 3.4 as > well as Armin's latest piece on the increased difficulties in writing wire > protocol handling code. A couple remarks: - the unicode section would gain being a little more on the practical side; for example the "surrogateescape" paragraph is an obscure and theoretical way of saying unicode filepaths (etc.) are fully supported on all platforms - also, it doesn't seem very clear that the primary string type (str) is now unicode; this has important consequences, for example non-ASCII exception messages work fine in 3.x while they were very delicate to work with in 2.x - when discussing Twisted / gevent alternatives, you should also mention Tornado, which is especially interesting because it works on both Python 2 and Python 3, and therefore presents a nice migration path

Thanks, I've addressed these and a couple of other points people brought up (e.g. it is cx-freeze that supports Py3k, not py2exe).

- perhaps you should discuss the idea that "uptake is slow", because the numbers are rather conflicting on that point; see what I wrote in https://mail.python.org/pipermail/python-list/2014-January/663922.html and also Chris Angelico's elaboration in https://mail.python.org/pipermail/python-list/2014-January/664003.html

I haven't incorporated these observations yet, but I will. It ties in closely with the point that bootstrapping the new Python 3 application ecosystem with cross-version libraries and frameworks is not the same thing as migrating the existing Python 2 application ecosystem, and the latter is expected to take much longer (since existing Python 2 users will have, of necessity, already worked around or avoided the bugs and limitations of that version of the language).

Cheers, Nick.

Regards Antoine.

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