Absolutely +1. In my opinion that should come together with the drop of Python 
2.7. So I mean target that for 2.0 as well. WDYT? Or is it more like sth. for 
2.1?

Felix

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On Tue, Nov 12, 2019 at 23:02, Kamil Breguła <kamil.breg...@polidea.com> wrote:

> +1
>
> On Tue, Nov 12, 2019 at 10:48 PM Kaxil Naik <kaxiln...@gmail.com> wrote:
>>
>> +1
>>
>> On Tue, Nov 12, 2019 at 9:47 PM Dan Davydov <ddavy...@twitter.com.invalid>
>> wrote:
>>
>> > +1
>> >
>> > On Tue, Nov 12, 2019 at 4:46 PM Jarek Potiuk <jarek.pot...@polidea.com>
>> > wrote:
>> >
>> > > Yep. It was actually a '+1' in disguise Bolke :).
>> > >
>> > > On Tue, Nov 12, 2019 at 10:44 PM Christian Lellmann
>> > > <christian.lellm...@googlemail.com.invalid> wrote:
>> > >
>> > > > +1 from my side too!
>> > > >
>> > > > Bolke de Bruin <bdbr...@gmail.com> schrieb am Di., 12. Nov. 2019,
>> > 22:39:
>> > > >
>> > > > > I guess thats a +1 then? :-)
>> > > > >
>> > > > > Op di 12 nov. 2019 22:36 schreef Jarek Potiuk <
>> > > jarek.pot...@polidea.com
>> > > > >:
>> > > > >
>> > > > > > I'd love to get rid of python 3.5
>> > > > > >
>> > > > > > We discussed it a few times but as of recently the main problem was
>> > > > that
>> > > > > > 3.5 was default python version of Stretch debian LTS (9). However
>> > we
>> > > > are
>> > > > > > soon - this week likely - switching to Buster debian LTS as base
>> > > image
>> > > > > for
>> > > > > > our CI tests (and production image that follows) (PR
>> > > > > > https://issues.apache.org/jira/browse/AIRFLOW-5842). Buster comes
>> > > with
>> > > > > 3.7
>> > > > > > by default and is already 4 months old.
>> > > > > >
>> > > > > > I think we should make an educated decision, based on what we can
>> > > gain
>> > > > by
>> > > > > > moving to 3.6.
>> > > > > >
>> > > > > > The PYPI stats show only downloads not current number of
>> > > installations
>> > > > -
>> > > > > (
>> > > > > > https://pypistats.org/packages/apache-airflow), but I think they
>> > are
>> > > > > kind
>> > > > > > of indicative numbers for potential users of 2.0.
>> > > > > > They show steady decline of 3.5 downloads - currently at below 5%.
>> > > > Python
>> > > > > > 3.6 is by far the most popular (around 40% of downloads).
>> > > > > >
>> > > > > > There are few things we could benefit from by switching to 3.6 -
>> > this
>> > > > is
>> > > > > my
>> > > > > > (subjective) selection of the ones that matter for Airflow:
>> > > > > >
>> > > > > > - Formatted string literals :
>> > > > > >
>> > > > > >
>> > > > >
>> > > >
>> > >
>> > https://docs.python.org/3/whatsnew/3.6.html#pep-498-formatted-string-literals
>> > > > > > (my
>> > > > > > favourite one)
>> > > > > > - Type annotations for variables :
>> > > > > >
>> > > > > >
>> > > > >
>> > > >
>> > >
>> > https://docs.python.org/3/whatsnew/3.6.html#pep-526-syntax-for-variable-annotations
>> > > > > > -
>> > > > > > now especially that we use MyPy more and more this one is the
>> > only
>> > > > > > place we
>> > > > > > have to leave ugly comments rather than annotations.
>> > > > > > - Path-like types:
>> > > > > >
>> > > > > >
>> > > > >
>> > > >
>> > >
>> > https://docs.python.org/3/whatsnew/3.6.html#pep-519-adding-a-file-system-path-protocol
>> > > > > > -
>> > > > > > nicer handling of file access
>> > > > > > - Local Time disambiguation:
>> > > > > >
>> > > > > >
>> > > > >
>> > > >
>> > >
>> > https://docs.python.org/3/whatsnew/3.6.html#pep-495-local-time-disambiguation
>> > > > > > -
>> > > > > > this had already caused problems in the past (I fixed a problem
>> > > > where
>> > > > > > pendulum and datetime objects were mixed and caused wrong
>> > > behaviour
>> > > > on
>> > > > > > 3.5)
>> > > > > > - Json loads supports binary format -
>> > > > > > https://docs.python.org/3/whatsnew/3.6.html#json - this has
>> > > already
>> > > > > > bitten us as well. there was code working fine in py2.7 and 3.6
>> > > but
>> > > > > not
>> > > > > > working with 3.5(!).
>> > > > > >
>> > > > > > Last but not least - it might free some resources on Travis (I hope
>> > > > > GitLab
>> > > > > > fix will be out in 10 days or so and we will be able to start
>> > testing
>> > > > > > migration to it).
>> > > > > >
>> > > > > > J..
>> > > > > >
>> > > > > > On Tue, Nov 12, 2019 at 10:00 PM Bolke de Bruin <bdbr...@gmail.com
>> > >
>> > > > > wrote:
>> > > > > >
>> > > > > > > Hi All,
>> > > > > > >
>> > > > > > > Can we drop python 3.5 support and switch to 3.6 as a minimum?
>> > > > > > >
>> > > > > > > Cheers
>> > > > > > > Bolke
>> > > > > > >
>> > > > > >
>> > > > > >
>> > > > > > --
>> > > > > >
>> > > > > > Jarek Potiuk
>> > > > > > Polidea <https://www.polidea.com/> | Principal Software Engineer
>> > > > > >
>> > > > > > M: +48 660 796 129 <+48660796129>
>> > > > > > [image: Polidea] <https://www.polidea.com/>
>> > > > > >
>> > > > >
>> > > >
>> > >
>> > >
>> > > --
>> > >
>> > > Jarek Potiuk
>> > > Polidea <https://www.polidea.com/> | Principal Software Engineer
>> > >
>> > > M: +48 660 796 129 <+48660796129>
>> > > [image: Polidea] <https://www.polidea.com/>
>> > >
>> >

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