[Numpy-discussion] Proposal of timeline for dropping Python 2.7 support

Nathaniel Smith njs at pobox.com
Mon Nov 13 16:33:43 EST 2017

On Nov 13, 2017 12:03, "Gael Varoquaux" <gael.varoquaux at normalesup.org>

On Mon, Nov 13, 2017 at 10:26:31AM -0800, Matthias Bussonnier wrote:
> This behavior is "new" (Nov/Dec 2016). [snip]
> It _does_ require to have a version of pip which is not decades old

Just to check that I am not misunderstanding: the version of pip should
not be more than a year old; "decades old" is just French hyperbola? Do I
understand right?

Right, the requirement is pip 9, which is currently one year old and will
be >2 years old by the time this matters for numpy.

It does turn out that there's a bimodal distribution in the wild, where
people tend to either use an up to date pip, or else use some truly ancient
pip that some Linux LTS distro shipped 5 years ago. Numpy isn't the only
project that will be forcing people to upgrade, though, so I think this
will work itself out. Especially since in the broken case what happens is
that users end up running our setup.py on an unsupported version of python,
so we'll be able to detect that and print some loud and informative message.

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