[yt-dev] Starting conversation about Py2 deprecation

[Matthew Turk]

Hi folks,

On the call yesterday, the topic of dropping support for Py2 came up.  This
site provides some context:

http://www.python3statement.org/

At present, we're planning to have a 3.4 release sometime in the early
summer, and then aiming for a yt 4.0 sometime about six months later.  yt
4.0 will have the demeshening.

A proposal was floated to have yt 4.0 be the last release that explicitly
supports python 2, and then to "softly" drop support for python 2 during
the cycle for yt 4.1, which would be about six months later, we
anticipate.  This would mean not testing on py2 anymore and potentially
removing some of the shims and six calls to dual-support.

Some more discussion is in the meeting notes:

https://github.com/yt-project/meeting-notes/blob/master/notes-20170419.md

I don't know if this is something we should actively discuss yet, but I
wanted to put it out there.  I personally support this proposal.

-Matt
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