[Mailman-Users] non_members script install issue

[Lucio]

I'm trying to use the non_members script by Mark Sapiro, which can be 
downloaded here:

https://www.msapiro.net/scripts/non_members

on a Debian buster/sid amd64 system.

# non_members
Traceback (most recent call last):
   File "/usr/local/sbin/non_members", line 63, in <module>
     import paths

What should I do?