mailmanclient library provides official Python bindings for the GNU
Mailman 3 REST API.
mailmanclient requires Python 2.6 or Python 2.7. Python3 support is on its
way and will be added soon.
You can also install it via
$ sudo pip install mailmanclient
See the GitLab project page for access to the development branch, issues, etc.
Many thanks to Florian Fuchs for his contribution of an initial REST client.