[gdal-dev] Minimum python version?

[Daniel Baston]

The minimum version (3.6) is documented at
https://gdal.org/development/dev_environment.html#build-requirements

The CI still has configurations using Ubuntu 18.04, which is using 3.6.9:

docker run --rm ghcr.io/osgeo/gdal-deps:ubuntu_18.04-master python3
--version

Dan

On Tue, Jun 13, 2023 at 1:22 PM Kurt Schwehr <schwehr at gmail.com> wrote:

> Hi all,
>
> What is the minimum python version for the GDAL python bindings? This is
> the only thing I found easily:
>
> find . -type f | grep -v git | xargs grep 3 | grep python_version
>
> cat autotest/requirements.txt
> pytest>=6.0.0
> pytest-sugar<=0.9.6; python_version < '3.7'
> pytest-sugar; python_version >= '3.7'
> pytest-env
> lxml
> jsonschema
> filelock
>
> I think the real answer is that it's 3.8 from what I see here:
>
> swig/python/osgeo/__init__.py
>
> # The following is a Sequence of tuples in the form of (gdal_version,
> python_version).
> # Each line represents the minimum supported Python version of a given
> GDAL version.
> # Introducing a new line for the next GDAL version will trigger a
> deprecation warning
> # when importing osgeo from a Python version which will not be
> # supported in the next version of GDAL.
> gdal_version_and_min_supported_python_version = (
>     ((0, 0), (0, 0)),
>     ((1, 0), (2, 0)),
>     ((2, 0), (2, 7)),
>     ((3, 3), (3, 6)),
>     # ((3, 4), (3, 7)),
>     # ((3, 5), (3, 8)),
> )
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> gdal-dev at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/gdal-dev
>
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