[MM3-users] Re: Execute assorted Mailman functions via Mailman shell terminal

On 5/13/25 12:40, Andy Matthews wrote:

When my company migrated from MM2 to MM3, they discovered there were things that didn't work as expected (don't get me started). So they developed a set of Python functions which allowed then to fill in the missing functionality. However, they've discovered that some of those functions either never worked properly, or no longer work. For example,

def list_nonmembers(mlist):
     for accepted in mlist.accept_these_nonmembers:
         print("Accepted: ",accepted)
     for held in mlist.hold_these_nonmembers:
         print("Held: ",held)

They're run by shelling into the machine which hosts mailman and executed like so (where scripts is scripts.py)

sudo -iu mailman mailman shell -l MAILING_LIST_ID --run scripts.list_nonmembers

That should work. What happens when you run it? Possibly it prints nothing because the list's accept_these_nonmembers and hold_these_nonmembers attributes are empty.

I'm recommending that we install Postorius, as I suspect many of the functions they've written are already present in that UI, but it's not as simple as that. Instead they're wanting a handful of these functions (including the one listed above) replaced sooner than we could get Postorius up and running.

I've gotten this far:

from mailman.interfaces.listmanager import IListManager
from zope.component import getUtility
mylist_id = 'bravo-open1@tena-sda.org'
list_manager = getUtility(IListManager)
mylist = list_manager.get(mylist_id)

The mylist variable is of type mailman.model.mailinglist.MailingList, and includes an Attributes for nonmembers:

mylist.nonmembers
<mailman.model.roster.NonmemberRoster object at 0x7ffffa3e65b0>

But this nonmembers property doesn't output any users/addresses when printed, and throws a TypeError when I try to iterate over it:

First of all I think there may be some confusion between the list's nonmembers and the *_these_nonmembers attributes. *_these_nonmembers are legacy attributes which exist to support ^... regexps and @list_id entries, but the preferred way to accept, hold, reject or discard individual nonmembers is to set the nonmember's moderation action.

Traceback (most recent call last):
   File "<console>", line 1, in <module>
TypeError: 'NonmemberRoster' object is not iterable

You need to iterate over mylist.nonmembers.members, i.e. the roster's members, not the roster.

So, given a mailing list instance, retrieved via list_manager.get(mylist_id), how would I go about printing all nonmembers and their current roles in a list (held, accepted, etc.)? Alternately, is there a different question I should be asking in order to retrieve that information?

It's not roles as you've already limited the role to nonmember. It's moderation_action.

for nonmember in mylist.nonmembers.members:
     print(f'Nonmember: {nonmember.address.email},'
           f' moderation_action: {nonmember.moderation_action}')

Note that moderation_action: None means list default.

-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan