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Drop support for Python 3.10 by hugovk · Pull Request #9750 · python-pillow/Pillow · GitHub

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Drop support for Python 3.10 - #9750

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radarhere merged 12 commits into
python-pillow:mainfrom
hugovk:rm-3.10
Jul 17, 2026
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Drop support for Python 3.10#9750
radarhere merged 12 commits into
python-pillow:mainfrom
hugovk:rm-3.10

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hugovk commented Jul 1, 2026 •
edited by radarhere
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Python 3.10 reaches end of life in October 2026:

Pillow 13.0.0 is planned for 2026-10-15 and will drop Python 3.10:

TODO:

hugovk added the Removal Removal of a feature, usually done in major releases label Jul 1, 2026
hugovk force-pushed the rm-3.10 branch 3 times, most recently from 87ab4ac to a7c52fe Compare July 1, 2026 19:05

hugovk commented Jul 1, 2026

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Decide about ubuntu-22.04-jammy-amd64

Let's remove that one, we did the same two years ago for 20.04: python-pillow/docker-images#275.

and ubuntu-22.04-jammy-amd64-valgrind which use 3.10: upgrade to 3.11 or drop

I think it's time for the slower ubuntu-24.04-noble-amd64-valgrind: python-pillow/docker-images#272.

radarhere mentioned this pull request Jul 6, 2026
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hugovk added this to the 13.0.0 milestone Jul 7, 2026

hugovk commented Jul 9, 2026

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Similar to radarhere/docker-images#4, I've split the valgrind tests into four jobs.

Workflow 22.04 unsplit (main) 24.04 unsplit 24.04 split x 4
Test Valgrind 81m - 89m 99m 36m
Test Valgrind Memory Leaks 3h 08m - 3h 40m 3h 07m 54m

radarhere mentioned this pull request Jul 9, 2026
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hugovk commented Jul 10, 2026

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Also added:

hugovk marked this pull request as ready for review July 10, 2026 13:17
radarhere mentioned this pull request Jul 11, 2026
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radarhere mentioned this pull request Jul 13, 2026
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radarhere reviewed Jul 13, 2026
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Comment thread Tests/test_file_avif.py
class TestAvifAnimation:
@contextmanager
def star_frames(self) -> Generator[list[Image.Image], None, None]:
def star_frames(self) -> Generator[list[Image.Image]]:

radarhere Jul 13, 2026 •
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

I'm having a hard time finding how this change is part of Python 3.11. It appears to work in Python 3.10.

Python 3.10.20 (main, Mar  7 2026, 05:04:57) [Clang 17.0.0 (clang-1700.6.3.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from collections.abc import Generator
>>> Generator[int]
collections.abc.Generator[int]

hugovk Jul 17, 2026

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Done by pyupgrade, and yes, could have been done already in 3.10 but we're using Ruff now and its UP rule doesn't do this.

radarhere merged commit 2b73839 into python-pillow:main Jul 17, 2026
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hugovk deleted the rm-3.10 branch July 17, 2026 21:28
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