Run pyenv local 3.12.0 . This automatically generates the file in your current folder.
Isolating third-party packages, libraries, and binary distributions. .python version
Rye is a modern, unified one-stop shop for Python development created by Armin Ronacher. Rye treats the .python-version file as a first-class citizen to pin toolchains for reproducibility. 4. ASDF / Mise Run pyenv local 3
Integrating .python-version into your team's workflow prevents the classic "it works on my machine" dilemma. Commit to Version Control Rye is a modern, unified one-stop shop for
| Version | Release Date | Bugfix Support Ends | Security Support Ends | |---------|--------------|----------------------|------------------------| | 3.9 | Oct 2020 | May 2023 | Oct 2025 (soon) | | 3.10 | Oct 2021 | May 2024 | Oct 2026 | | 3.11 | Oct 2022 | May 2025 | Oct 2027 | | 3.12 | Oct 2023 | May 2026 | Oct 2028 | | 3.13 | Oct 2024 | May 2027 | Oct 2029 | | 3.14 (dev) | Oct 2025 | May 2028 | Oct 2030 |
Avoid 3.9 and earlier unless you absolutely must support a legacy dependency.
Advanced implementations allow for multiple versions (e.g., for testing against multiple interpreters), listed on separate lines. 4. Comparison with Alternatives .python-version runtime.txt pyproject.toml pyenv / asdf Heroku / Cloud Platforms Poetry / PDM Scope Local switching Deployment Dependency management Standard Community-led Vendor-specific PEP 518/621 5. Best Practices