[MM3-users] check/update delivery status via python script

Somehow I can't get the starting point in the documentation to do stuff like this. Besides, when I try to run examples from https://docs.mailman3.org/projects/mailman/en/release-3.0/src/mailman/ commands/docs/withlist.html[1] I run into errors like

AttributeError: 'Withlist' object has no attribute 'process'

Where to start? I thought I have some python experience but your API makes my head burn.

[1] https://docs.mailman3.org/projects/mailman/en/release-3.0/src/mailman/ commands/docs/withlist.html