[PATCH 4 of 4 py3] contrib: add a ratchet for tests in Python 3

[Augie Fackler]

> On Jun 16, 2017, at 09:44, Yuya Nishihara <yuya at tcha.org> wrote:
> 
> On Fri, 16 Jun 2017 09:38:52 -0400, Augie Fackler wrote:
>> 
>>> On Jun 16, 2017, at 9:28 AM, Yuya Nishihara <yuya at tcha.org> wrote:
>>> 
>>> Perhaps you would mean (3, 5) <= sys.version_info ?
>> 
>> Crud, yes I do. Do you want a resend, or should one of us just fix it with a quick amend and push?
> 
> It's still in my local repo, so fixed at my end.

Awesome, thanks.