+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/> >
