Question 46365 in Debian Question posted in
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Accessing Mailman 3 list members via Python/Django management console – Debian

I am trying to access members of an existing Mailman 3 mailing list directly from Django Management console on a Debian Bullseye where Mailman is installed from deb packages (mailman3-full). I can connect to the Django admin console like this (all 3 variants seem to work fine):

$ /usr/share/mailman3-web/manage.py shell
$ mailman-web shell
$ mailman-web shell --settings /etc/mailman3/mailman-web.py
Python 3.9.2 (default, Feb 28 2021, 17:03:44)
>>>

But inside the Django admin console, some mailman components seem to be missing.

I try to access the list manager as described here: Docs > Models > The mailing list manager:

>>> from mailman.interfaces.listmanager import IListManager
>>> from zope.component import getUtility
>>> list_manager = getUtility(IListManager)
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/zope/component/_api.py", line 169, in getUtility
    raise ComponentLookupError(interface, name)
zope.interface.interfaces.ComponentLookupError: (<InterfaceClass mailman.interfaces.listmanager.IListManager>, '')

Can’t figure out why this ComponentLookupError happens.

Also tried to acccess a list with the ListManager implementation:

>>> from mailman.config import config
>>> from mailman.model.listmanager import ListManager
>>> list_manager = ListManager()

>>> list_manager.get('[email protected]')
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 85, in wrapper
    return function(args[0], config.db.store, *args[1:], **kws)
AttributeError: 'NoneType' object has no attribute 'store'

>>> list_manager.get_by_list_id('mynews.example.com')
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 85, in wrapper
    return function(args[0], config.db.store, *args[1:], **kws)
AttributeError: 'NoneType' object has no attribute 'store'

What am I doing wrong here? None of the examples in the Mailman 3 models documentation is working if I don’t even get that far.

any help greatly appreciated!

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    So mailman shell works great and I could run this interactively:

    from mailman.interfaces.listmanager import IListManager
from zope.component import getUtility
from mailman.testing.documentation import dump_list
from operator import attrgetter

def dump_members(roster):
    all_addresses = list(member.address for member in roster)
    sorted_addresses = sorted(all_addresses, key=attrgetter('email'))
    dump_list(sorted_addresses)

list_manager = getUtility(IListManager)
mlist = list_manager.get('[email protected]')
dump_members(mlist.members.members)

    but how could I put this into a script that could be run with mailman withlist -r listmembers -l [email protected]?

    from mailman.testing.documentation import dump_list
from operator import attrgetter

def listmembers(mlist):
    roster = mlist.members.members
    all_addresses = list(member.address for member in roster)
    sorted_addresses = sorted(all_addresses, key=attrgetter('email'))
    dump_list(sorted_addresses)

    where would I put such a listmembers.py runner? I tried to put it into /usr/lib/python3/dist-packages/mailman/runners directory, but didn't work:

    $ mailman withlist -r listmembers -l [email protected]
ModuleNotFoundError: No module named 'listmembers'

    Thanks!


  2. 0

    It’s just the wrong shell you are using. You should use Mailman core shell instead.

    It is accessible via just mailman shell in your system most probably.

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