[SciPy-Dev] dropping python 2.7 and numpy <1.13.3

[Ralf Gommers]

On Mon, Nov 12, 2018 at 11:20 PM Stefan van der Walt <stefanv at berkeley.edu>
wrote:

> On Sat, 10 Nov 2018 19:22:33 -0800, Ralf Gommers wrote:
> > I've always had in mind that SciPy would follow NumPy in its timeline for
> > dropping Python 2.7. However, as far as I can tell we've never had the
> > discussion on this list. So here's the proposal:
> > Let's follow NumPy's timeline [1], which says that from 1 Jan 2019
> onwards
> > new releases will be Python 3 only, and the last release before that date
> > will be an LTS release. That means SciPy 1.2.0 will be the LTS release,
> and
> > 1.3.0 will be >= py3.5.
>
> scikit-image made the same move at the end of May, and the only
> technical issue that arose was managing the large number of backports.
>

Thanks Stefan, good to know.

For that, Matthias Bussonier's MeeSeeksDev bot has been invaluable (it
> automatically backports PRs on request, or by adding the issue to an
> appropriately tagged milestone).
>

I'd suggest to wait with installing that until it's really clear we need
it. So far, we haven't had a bot that wasn't more trouble than it's worth I
think.

Cheers,
Ralf


> > setup.py even), so I propose that for SciPy 1.3.0 we raise the minimum
> > required NumPy version to 1.13.3. That'll still be 4 supported releases,
> > 1.13.3-1.16.x.
>
> +1; having per-Python-version NumPy dependencies is an unnecessary
> developer burden.
>
> Stéfan
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