Python 3.9, released in October 2025, has reached end-of-life as of October 31, 2025. Despite this, developers can still download and use Python 3.9 for legacy projects. The final version available is Python 3.9.13, which can be downloaded from the official Python.org website.

For Windows users, the Python 3.9.14 release introduced Sigstore signing for enhanced security. The installation process remains straightforward, with the Windows installer providing a simple setup wizard. macOS users can download the 64-bit universal2 installer for optimal performance across different Mac systems.

While Python 3.9 is no longer receiving security updates, it remains fully functional for existing projects. AWS Glue Python shell supports Python 3.9 with a flexible pre-loaded environment and the ability to install additional libraries as needed.

Developers should note that Python 3.9 reached its end-of-life date, meaning no further updates or security patches will be released. For new projects, Python 3.10 or newer versions are recommended.