When will be the time to drop Python 2 compatibility?

[nathanielmanistaatgoogle]

I recently attempted to use one of my favorite static analysis tools with hpack and it choked on

try:  # pragma: no cover
    basestring = basestring
except NameError:  # pragma: no cover
    basestring = (str, bytes)

in hpack.py because it doesn't support analyzing Python 2 source. My impression at this time is that this isn't a problem with the tool; that more than four years after the Python 2 turndown it's appropriate for tools to drop support for analyzing Python 2 source.

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So... while I see that https://hyper.readthedocs.io/en/latest advertises that the hyper family of projects supports 2.7.9-and-later in the Python 2 line, do y'all hyper maintainers have a notion of when you're going to be dropping Python 2 compatibility from the source?