Azure Automation now supports Python 3 Runbooks (both cloud and hybrid).
You can import, create, and run Python 3 runbooks in Azure (or in a Hybrid Runbook Worker). This includes the ability to upload Python 3 packages imported by Python 3 runbooks. There is also support for well-known Automation features such as Variables, Connections and Credentials.
Python 3 for Runbooks is available in public preview, and is available in all Azure regions.3