[mauvilsa]

What does this PR do?

pre-commit run -a failed for anyone without Python 3.12 installed, because .pre-commit-config.yaml pinned the hooks to python3.12. This removes the pin, so the hooks run with the Python that runs pre-commit (e.g. 3.12 or 3.14).

To keep mypy results the same whatever that version is, python_version = "3.12" is added to [tool.mypy]. The pre-commit note in CONTRIBUTING.rst is updated to match.

Before submitting

• Did you read the contributing guideline?
• If you used a coding agent, did you fully understand and validate all generated code and ensure it follows the contributing guidelines?
• Did you update the documentation? (readme and public docstrings)
• [n/a] Did you write unit tests such that there is 100% coverage on related code? (required for bug fixes and new features)
• Did you verify that new and existing tests pass locally?
• [n/a] If this is a bug fix, did you verify that the tests fail without the code fix?
• Did you make sure that all changes preserve backward compatibility?
• [n/a] Did you update the CHANGELOG including a pull request link? (not for typos, docs, test updates, or minor internal changes/refactors)

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge.

Summary

Removes the Python 3.12 requirement for Python-based pre-commit hooks while keeping mypy's target at Python 3.12.

• Pre-commit hooks use the runner's Python while mypy checks as 3.12.

_{Reviews (1) · Last reviewed commit: "Pre-commit hooks no longer require Pytho..." · Reviewed by Greptile}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (b8c3925) to head (26656b5).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1031   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           27        27           
  Lines        10046     10046           
=========================================
  Hits         10046     10046           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.