Drop support for Python 3.9 (10/2025)

[afuetterer]

Python 3.9 reaches EOL in 10/2025.

Refs:

• https://devguide.python.org/versions/#supported-versions
• Drop support for Python 3.8 (10/2024) #1030

[jochenklar]

😢

[afuetterer]

This would allow for the upgrade of Django to > 5, which requires Python 3.10.

Ref: #742

[afuetterer]

This will happen every year. :)

[afuetterer]

There is a 2.4.0 milestone added here. If I wanted to submit a PR for this. Which target branch should I choose, as there is no 2.4.0-branch at the moment.

I think I would open the PR in September. What do you suggest?

[MyPyDavid]

Hi @afuetterer , currently the release 2.3.3 is under construction.
Could this be part of a patch release @jochenklar? I would think so since 3.9 is pretty outdated right now and linux distros have 3.10 available right?!

[jochenklar]

If we drop 3.9 and even upgrade to Django 5 we should do it in 2.4. There are a lot of old VM around.

[afuetterer]

As there is no 2.4.0 branch as of yet: Where should PR be targeted to? Or is the answer "please wait until there is a 2.4.0 branch"?

[MyPyDavid]

To the 2.3.3 branch for now, it needs to be rebased maybe a couple of times then later. The milestone should be kept at 2.4.0.

[MyPyDavid]

this will be part of the 2.4.0 release.
Side note: all Debian 11 environments need to upgrade their python installation, e.g. with uv ?!

[jochenklar]

https://rdmo.readthedocs.io/en/latest/advanced/index.html#use-uv-to-install-a-custom-python-version :)