Re: Drop support for Python 3.4?

> On Mar 26, 2019, at 7:59 PM, Craig Rodrigues <[email protected]> wrote:
> 
> What do people think of dropping Twisted support for Python 3.4?
> 
> According to https://devguide.python.org/#status-of-python-branches <https://devguide.python.org/#status-of-python-branches>
> 
> Python 3.4 EOL'd on March 19, 2019.
> 
> In the Python 3 world, we have Python 3.4, 3.5, 3.6, 3.7, and at
> the end of this year we will have Python 3.8.
> 
> That's quite a lot of Python versions to support.
> 
> Python 3.5 introduced async/await keywords, which are very relevant to Twisted:
> https://docs.python.org/3.5/whatsnew/3.5.html#whatsnew-pep-492 <https://docs.python.org/3.5/whatsnew/3.5.html#whatsnew-pep-492>
> 
> If it makes sense, it would be nice to use these keywords as first-level features in Twisted.
> 
> Since Amber brought up discussion of dropping Python 2.7 here:
> https://twistedmatrix.com/pipermail/twisted-python/2019-March/032234.html <https://twistedmatrix.com/pipermail/twisted-python/2019-March/032234.html>
> 
> I thought I would raise dropping Python 3.4 also.

I'll let any 3.4 users speak for themselves if they're out there, but while I can imagine a host of reasons we might want to still support 2.7, I can't think of any that we'd want to hang on to 3.4 any longer than necessary.  3.5 still has the lingering benefit of a production(-ish) pypy, so we might not want to jump to 3.6-only anyway, but if it's unsupported by python core, let's get rid of it.  Faster round trips through CI are reason enough :-).

-g

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