Add Python 3.13 support

[PetarTerziev-UL]

Summary

coremltools versions prior to 9.0 did not support Python 3.13. Now executorch uses 9.0, we can finally enable building wheels with Python 3.13.

Fixes #8292

Test plan

Python test suite ran and compared against a dev install of the target branchh in a 3.12 virtual environment.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/16004

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

❌ 11 New Failures, 1 Unrelated Failure

As of commit 7fbf70d with merge base 3ce840c ():

NEW FAILURES - The following jobs have failed:

• pull / test-moshi-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 9fbb3922eab081e2622c7d4c37b7b89551679ab5066161944b62f8667d74f692 /exec failed with exit code 1
• pull / unittest / macos / macos-job (gh)
  examples/models/llama3_2_vision/preprocess/test_preprocess.py::TestImageTransform::test_preprocess4
• Test CUDA Builds / check-all-cuda-builds (gh)
  Process completed with exit code 1.
• Test CUDA Builds / test-executorch-cuda-build-12.6 / linux-job (gh)
  RuntimeError: Command docker exec -t 063ad281ebde84d6bfc6f39cedd1031b9b30fdf9e484f9cfa6442da98de6df55 /exec failed with exit code 1
• Test CUDA Builds / test-executorch-cuda-build-12.8 / linux-job (gh)
  RuntimeError: Command docker exec -t 9bd9d9b5c911c021f9c5cefd885a6d284bb74c90d5b302e19047ce6073201c08 /exec failed with exit code 1
• Test CUDA Builds / test-models-cuda (add_mul) / linux-job (gh)
  RuntimeError: Command docker exec -t 554fe2ac3a49d5cb035400a98d90f012f2098f96f0032977d11128310f0c5598 /exec failed with exit code 1
• Test CUDA Builds / test-models-cuda (add) / linux-job (gh)
  RuntimeError: Command docker exec -t a9ad55baef929b1b82c315055818d2669ad515c20ec41e36ac26774cb618a1ca /exec failed with exit code 1
• Test CUDA Builds / test-models-cuda (conv1d) / linux-job (gh)
  RuntimeError: Command docker exec -t 477a21dd3ae1561e73d63b42a4a2305fe65dc35680d409984070e91e0cd24331 /exec failed with exit code 1
• Test CUDA Builds / test-models-cuda (linear) / linux-job (gh)
  RuntimeError: Command docker exec -t 79fc7dc81dd78cfd9f37e4e4d0e0bc576278ac8b2188113a4d990aa6a9148a31 /exec failed with exit code 1
• Test CUDA Builds / test-models-cuda (resnet18) / linux-job (gh)
  RuntimeError: Command docker exec -t 6fe44df444dd4be49a291c2c8d6db0279b96ca70b0fcae2e07c1f8a07f2ed597 /exec failed with exit code 1
• Test CUDA Builds / test-models-cuda (sdpa) / linux-job (gh)
  RuntimeError: Command docker exec -t e511e2344151d38cf31d914b58ea44099a00f0e02e91f13302c3ed76bf732c7f /exec failed with exit code 1

BROKEN TRUNK - The following job failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Apple / build-demo-ios / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 74

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[PetarTerziev-UL]

I need to add a "release notes: misc" label, but I don't seem to have the ability to.

[PetarTerziev-UL]

the tests under examples/models/llama3_2_vision/preprocess hang on a call into AOTInductor when torch nightly is installed.

Need to look into this further.

[PetarTerziev-UL]

the tests under examples/models/llama3_2_vision/preprocess hang on a call into AOTInductor when torch nightly is installed.

Need to look into this further.

Things are better in with a newer nightly build of torch, so I've bumped the pinned version as part of this PR too.

[Copilot]

Pull request overview

This PR adds Python 3.13 support to ExecuTorch now that coremltools 9.0 (which supports Python 3.13) is available. The changes update version constraints, documentation, and CI/CD workflows to enable building wheels for Python 3.13.

Key changes:

• Update Python version constraint from <3.13 to <3.14 in pyproject.toml
• Add Python 3.13 to wheel building workflows and documentation
• Remove Python 3.13 warning from CoreML troubleshooting documentation
• Update nightly version pin (unrelated maintenance update)

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
pyproject.toml	Add Python 3.13 classifier, update requires-python constraint to <3.14, add py313 to ruff target-version
torch_pin.py	Update nightly version from dev20251025 to dev20251124
docs/source/*.md	Update Python version requirements from 3.10-3.12 to 3.10-3.13 across multiple documentation files
docs/source/backends/coreml/coreml-troubleshooting.md	Remove outdated Python 3.13 compatibility warning
README-wheel.md	Add Python 3.13 to list of supported versions
.github/workflows/*.yml	Add "3.13" to Python version matrices for wheel building workflows

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The comment is now outdated since Python 3.13 is being supported. Either remove the comment entirely or update it to reflect that the issue was resolved in coremltools 9.0 (e.g., '# coremltools 9.0+ supports python 3.13, see apple/coremltools#2487').

Suggested change

	# coremltools has issue with python 3.13, see https://github.com/apple/coremltools/issues/2487
	# coremltools 9.0+ supports python 3.13, see https://github.com/apple/coremltools/issues/2487

[larryliu0820]

Delete this comment?

[larryliu0820]

@PetarTerziev-UL can you please bump the nightly version of pytorch to 1122 instead? I think the nightly job failed to build 1124 nightly.