[all][tc] Thoughts on Python 3.7 support
radoslaw.piliszek at gmail.com
Wed Jan 6 11:26:35 UTC 2021
Sorry for top posting but just a general remark:
Do note Debian 10 is using Python 3.7 and that is what Kolla is testing too.
I know Debian is not considered a tested platform but people use it
My opinion is, therefore, that we should keep 3.7 in classifiers.
On Wed, Jan 6, 2021 at 11:37 AM Dmitry Tantsur <dtantsur at redhat.com> wrote:
> On Tue, Jan 5, 2021 at 10:53 PM Jeremy Stanley <fungi at yuggoth.org> wrote:
>> On 2021-01-05 22:32:58 +0100 (+0100), Pierre Riteau wrote:
>> > There have been many patches submitted to drop the Python 3.7
>> > classifier from setup.cfg:
>> > https://review.opendev.org/q/%2522remove+py37%2522
>> > The justification is that Wallaby tested runtimes only include 3.6 and 3.8.
>> > Most projects are merging these patches, but I've seen a couple of
>> > objections from ironic and horizon:
>> > - https://review.opendev.org/c/openstack/python-ironicclient/+/769044
>> > - https://review.opendev.org/c/openstack/horizon/+/769237
>> > What are the thoughts of the TC and of the overall community on this?
>> > Should we really drop these classifiers when there are no
>> > corresponding CI jobs, even though more Python versions may well be
>> > supported?
>> My recollection of the many discussions we held was that the runtime
>> document would recommend the default python3 available in our
>> targeted platforms, but that we would also make a best effort to
>> test with the latest python3 available to us at the start of the
>> cycle as well. It was suggested more than once that we should test
>> all minor versions in between, but this was ruled out based on the
>> additional CI resources it would consume for minimal gain. Instead
>> we deemed that testing our target version and the latest available
>> would give us sufficient confidence that, if those worked, the
>> versions in between them were likely fine as well. Based on that, I
>> think the versions projects claim to work with should be contiguous
>> ranges, not contiguous lists of the exact versions tested (noting
>> that those aren't particularly *exact* versions to begin with).
> This is precisely my expectation: if we support 3.6 and 3.8, it's reasonable to suggest we support 3.7. Not supporting it gains us nothing.
>> Apologies for the lack of references to old discussions, I can
>> probably dig some up from the ML and TC meetings several years back
>> of folks think it will help inform this further.
>> Jeremy Stanley
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