---
title: Python-SDK - 3.9.0
slug: feature-experimentation/release-notes/python-sdk-3-9-0
docTags: 
createdAt: 2026-07-20T15:45:14.793Z
---

## \[3.9.0]

June 1st, 2021

### New Features

Added support for multiple concurrent prioritized experiments per flag. \[#322]\([https://github.com/optimizely/python-sdk/pull/322](https://github.com/optimizely/python-sdk/pull/322))

[https://github.com/optimizely/python-sdk/releases/tag/3.9.0](https://github.com/optimizely/python-sdk/releases/tag/3.9.0)