Remove python 3.9

[vyagubov]

Python 3.9 reached end-of-life in October 2025, so I decided to remove it.

Summary by CodeRabbit

• Chores
  • Updated minimum Python version requirement to 3.10 (previously 3.9). Project now requires Python 3.10–3.13.
  • Updated CI/CD workflows to use Python 3.10.
  • Added project metadata classifiers for improved package discoverability.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[github-actions]

👋 @vyagubov
Thank you for raising your pull request.
Please make sure to add tests and document all user-facing changes.
You can do this by editing the docs files in this pull request.

[coderabbitai]

📝 Walkthrough

Walkthrough

Updates the project's Python requirement from version 3.9 to 3.10 across all GitHub Actions workflows and the project manifest, and adds metadata classifiers to pyproject.toml.

Changes

Cohort / File(s)	Summary
GitHub Actions Workflows .github/workflows/release.yml, .github/workflows/run-precommit.yml, .github/workflows/test-github-action.yml, .github/workflows/test-warehouse.yml	Updated Python setup from 3.9 to 3.10 in all four workflows. No changes to build steps, conditional logic, or control flow.
Project Configuration pyproject.toml	Updated Python dependency constraint from >=3.9,<3.14 to >=3.10,<3.14. Added new [tool.poetry] classifiers section including language, audience, license, supported Python versions (3.10–3.13), and topic metadata.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 A hop to Python's latest way,
From 3.9 to 3.10 we spring today,
Workflows updated, workflows aligned,
With classifiers neat and version refined!
Modern tools for the modern crew. 🐾

Pre-merge checks

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Remove python 3.9' directly and clearly summarizes the main objective of the pull request: dropping Python 3.9 support. This is reflected in the workflow updates and dependency changes across the entire changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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📜 Recent review details

Configuration used: defaults

Review profile: CHILL

Plan: Pro

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📥 Commits

Reviewing files that changed from the base of the PR and between 07ca1d1 and 84d78ff.

📒 Files selected for processing (5)

• .github/workflows/release.yml
• .github/workflows/run-precommit.yml
• .github/workflows/test-github-action.yml
• .github/workflows/test-warehouse.yml
• pyproject.toml

🔇 Additional comments (6)

.github/workflows/run-precommit.yml (1)

16-16: LGTM!

The Python version update aligns with the PR objective to drop Python 3.9 support.

.github/workflows/release.yml (1)

21-21: LGTM!

The Python version update correctly aligns the release workflow with the new minimum supported version.

.github/workflows/test-github-action.yml (1)

54-54: LGTM!

The Python version update correctly aligns the test workflow with the new minimum supported version.

.github/workflows/test-warehouse.yml (1)

114-114: LGTM!

The Python version update correctly aligns the warehouse test workflow with the new minimum supported version.

pyproject.toml (2)

12-21: Good addition of PyPI classifiers.

Adding the classifiers section improves the package metadata on PyPI, making it easier for users to discover the supported Python versions and other project details.

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26-26: No remaining Python 3.9 references detected.

A comprehensive search across the codebase found no references to Python 3.9 in documentation, configuration files (.python-version, setup.py, README files), or any other tracked files. The pyproject.toml constraint update to Python >=3.10 is complete and sufficient.

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[vyagubov]

@NoyaOffer FYI. Maybe it makes sense to merge current PR before the next release.