chore: drop Python 3.9 and upgrade to PyTorch 2.9.1 #48
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Drop Python 3.9 support (EOL Oct 2025) and standardize on Python 3.10-3.14 following the official Python release calendar. Update minimum required version to 3.10 with maximum of 3.14, ensuring compatibility with all actively maintained Python versions. - Update pyproject.toml: requires-python = ">=3.10,<3.15", python_version = "3.10" - Update CI test matrix to 3.10-3.13 (3.14 not yet released) - Upgrade PyTorch base images from 2.8.0 to 2.9.1-cuda12.8 with Python 3.12 - Add explicit Python version documentation in Dockerfiles - Update DEVELOPMENT.md prerequisites and workflow diagram All quality checks pass (155/155 tests, 78% coverage, mypy and ruff OK).
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Pull request overview
This PR drops Python 3.9 support (approaching EOL) and upgrades PyTorch base images to version 2.9.1. The changes align the project with Python 3.10-3.14 support and update all relevant configuration files, CI/CD workflows, and documentation.
Changes:
- Updated Python version requirements from 3.9-3.12 to 3.10-3.14
- Upgraded PyTorch base images from 2.8.0 to 2.9.1 with CUDA 12.8
- Updated CI/CD test matrix and documentation to reflect new Python version support
Reviewed changes
Copilot reviewed 5 out of 6 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| pyproject.toml | Updated minimum Python version to 3.10 and MyPy target version |
| Dockerfile-lb | Upgraded PyTorch base image to 2.9.1 with Python 3.12 comment |
| Dockerfile | Upgraded PyTorch base image to 2.9.1 with Python 3.12 comment |
| DEVELOPMENT.md | Updated prerequisites and CI/CD workflow diagram for Python version range |
| .github/workflows/ci.yml | Updated test matrix to Python 3.10-3.14 |
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jhcipar
approved these changes
Jan 13, 2026
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Summary
Drop Python 3.9 support (EOL October 5, 2025) and standardize on Python 3.10-3.14 following the official Python release calendar. Also upgrade PyTorch base images to latest stable version.
Changes
requires-python = ">=3.10,<3.15",python_version = "3.10"(MyPy)['3.10', '3.11', '3.12', '3.13']