[Biopython-dev] Planning to drop Python 2 support by 2020?

Peter Cock p.j.a.cock at googlemail.com
Fri Apr 7 15:26:49 UTC 2017

Hello all,

I raised the idea of planning to drop Python 2 support by 2020
here on the developers list last year with no reply, and on tTwitter
where there were some positive replies.

Biopython 1.69 is now out, and with it we have formally dropped
support for Python 2.6, but we still support Python 2.7 for now.

If no one objects, then next week I will write to the main mailing
list, and our announcement list, stating this is our intension.

Then if there are no reasoned objections, we can add this to
the website and README.rst etc, and ask to be added to



On Mon, Dec 5, 2016 at 6:17 PM, Peter Cock <p.j.a.cock at googlemail.com> wrote:
> Dear fellow Biopythoneers,
> Or next release (Biopython 1.69) drops Python 2.6 support, and will
> target Python 2.7 and Python 3.3 onwards.
> While Python 2.7 support will continue in the short to medium term,
> the Python team themselves currently plan to stop support by 2020.
> That is only three or four more years, and seems a sensible upper
> limit for how long Biopython continues to support Python 2.7.
> Furthermore, NumPy (which a lot of our code depends on) and
> other high profile relevant projects also intend to drop their
> Python 2.7 support by 2020 as advertised on this campaign
> site: http://www.python3statement.org/
> Does anyone object to adopting this goal for Biopython, and
> adding the project to http://www.python3statement.org/ ?
> Thanks,
> Peter

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