Python 3.9 in Azure Functions is now in public preview

Customers can now develop Python 3.9 apps locally and deploy them to all Azure Functions plans. In addition, we updated the performance best practices guide for Python functions apps. [Follow this guide to learn how to configure your apps to achieve better throughput performance.](https://aka.ms/azfunc/python/performance-best-practices) * Azure functions * Features * [ Azure functions](https://azure.microsoft.com/en-gb/products/functions/)