[Mailman-Users] Python 2.2 and mailman > 2.1.9

[Sebastian Hagedorn]

Hi,

on our production server we (still) run Red Hat Enterprise Linux 3. The 
most recent version of Python there is Python 2.2.3. Currently we run 
Mailman 2.1.9. I've built an RPM for Mailman 2.1.11 that we were planning 
on installing soon. However, we installed it on a test system and found 
this issue:

Jan 14 16:10:28 2009 (3972) Uncaught runner exception: No module named sets
Jan 14 16:10:28 2009 (3972) Traceback (most recent call last):
  File "/usr/lib/mailman/Mailman/Queue/Runner.py", line 120, in _oneloop
    self._onefile(msg, msgdata)
  File "/usr/lib/mailman/Mailman/Queue/Runner.py", line 191, in _onefile
    keepqueued = self._dispose(mlist, msg, msgdata)
  File "/usr/lib/mailman/Mailman/Queue/IncomingRunner.py", line 130, in 
_dispose
    more = self._dopipeline(mlist, msg, msgdata, pipeline)
  File "/usr/lib/mailman/Mailman/Queue/IncomingRunner.py", line 150, in 
_dopipeline
    __import__(modname)
  File "/usr/lib/mailman/Mailman/Handlers/CalcRecips.py", line 41, in ?
    from sets import Set as set
ImportError: No module named sets

The relevant source is this:

# Use set for sibling list recipient calculation
try:
    set
except NameError: # Python2.3
    from sets import Set as set

It seems as though Python >= 2.4 has "set", Python 2.3 has "Set" as an 
import, but Python 2.2 has neither. The sibling feature was introduced with 
Mailman 2.1.10, so I guess that version would have the same issue. I don't 
recall having read anything about that. Does nobody else use such an old 
Python version?

Anyway, is there a workaround for 2.2 or do we have to either install a 
separate Python or upgrade to RHEL 5 if we want to update Mailman? I know 
that Mailman 2.1.12 will require Python 2.4, but I had been hoping for one 
last update that supports 2.2 ...

Thanks, Sebastian
-- 
Sebastian Hagedorn - Listmaster - RZKR-R1 (Gebäude 52), Zimmer 18
Zentrum für angewandte Informatik - Universitätsweiter Service RRZK
Universität zu Köln / Cologne University - Tel. +49-221-478-5587
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