chore(main): release 0.9.0

[openfeaturebot]

🤖 I have created a release beep boop

0.9.0 (2026-01-08)

⚠ BREAKING CHANGES

• Drop python 3.9 support (#554)

✨ New Features

• Drop python 3.9 support (04106f5)

🧹 Chore

• Drop python 3.9 support (#554) (04106f5)

---

This PR was generated with Release Please. See documentation.

[gemini-code-assist]

Summary of Changes

Hello @openfeaturebot, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request is an automated release for version 0.9.0 of the OpenFeature Python SDK. Its primary purpose is to update all relevant project metadata and documentation to reflect the new version number and to formally announce the discontinuation of support for Python 3.9, ensuring the project aligns with current Python ecosystem standards.

Highlights

• Version Release: This pull request officially releases version 0.9.0 of the OpenFeature Python SDK.
• Breaking Change: Support for Python 3.9 has been discontinued, which is a breaking change for users relying on that version.
• Automated Updates: Various project files, including the changelog, README, and version declarations, have been automatically updated to reflect the new 0.9.0 version.

🧠 New Feature in Public Preview: You can now enable Memory to help Gemini Code Assist learn from your team's feedback. This makes future code reviews more consistent and personalized to your project's style. Click here to enable Memory in your admin console.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.83%. Comparing base (8691574) to head (55c0dfc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #555   +/-   ##
=======================================
  Coverage   97.83%   97.83%           
=======================================
  Files          40       40           
  Lines        1849     1849           
=======================================
  Hits         1809     1809           
  Misses         40       40           

Flag	Coverage Δ
unittests	97.83% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[gemini-code-assist]

Code Review

This pull request is an automated release for version 0.9.0, which primarily includes dropping support for Python 3.9. The changes are mostly version bumps in various files. I've suggested a small cleanup in the CHANGELOG.md to improve its readability. Additionally, while not part of this PR's changes, I noticed that tool.ruff.target-version in pyproject.toml is still set to py39, which is inconsistent with dropping Python 3.9 support. This should probably be updated to py310 in a follow-up PR.

[gemini-code-assist]

The change to drop Python 3.9 support is listed under 'BREAKING CHANGES', 'New Features', and 'Chore'. This is redundant. Since dropping a Python version is a breaking change, listing it under 'BREAKING CHANGES' is correct and sufficient. I suggest removing the 'New Features' and 'Chore' sections for this entry to make the changelog cleaner and easier to read.