Document support plan for py2

[sirosen]

I was curious when/if I need to worry about black dropping py2 support, since I want to use it in a project where we're committed to supporting py2 for as long as it remains feasible (in spite of the challenges).

The only thing I found was a comment from on #85 , saying that py2 support will never -- at least for the foreseeable future -- be dropped. That's great! Fantastic, even!

I think it would be even nice if that were said somewhere in black's docs so that you don't have to search the issue tracker to find out the policy such as it is. Maybe just

python2 support

black will support python 2.7 for the foreseeable future. There are no plans to drop python2 support.

But where should this go?

[ichard26]

Sure, I like this idea, I think a good spot for this would be the "Common Issues & FAQ" document I'm proposing here: GH-2176.

Although it would be good to check we still maintain this policy, cc @JelleZijlstra.

[JelleZijlstra]

Yes, that sounds right. I guess we should eventually drop Python 2 support for now it's not a big burden and there still seems to be interest.

[felix-hilden]

Linking this to #2176 for housekeeping, this info will be provided in the FAQ shortly!