Hi. I'm somewhat lost here, therefore the call for help. I have an experiment installation of Mailman. It started out as 1.0b5 but is now reflecting the cvs head of mailman sources at the cvs.python.org:/projects/cvsroot repository. At some point while trying to find an alternative for using aliases in sendmail (by defining a mailer and a dispatch script), the post and deliver of mailman started to report exceptions. I did a clean sweep (I think) and reinstalled it several times. I also switched between python 1.5 and 1.5.1. Nothing helped. Here's what is reported in the error file when running python 1.5:

Oct 16 21:45:23 1998 post: Traceback (innermost last):
post:   File "/home/mailman/scripts/post", line 40, in ?
post:      LogStdErr("error", "post")
post:   File "/home/mailman/Mailman/Logging/Utils.py", line 41, in

LogStdErr post: multi = MultiLogger(sys.__stdout__, sys.stderr) post: AttributeError : __stdout__ Oct 16 21:45:29 1998 deliver: Traceback (innermost last): deliver: File "/home/mailman/scripts/deliver", line 41, in ? deliver: LogStdErr("error", "deliver") deliver: File "/home/mailman/Mailman/Logging/Utils.py", line 41, in LogStdErr deliver: multi = MultiLogger(sys.__stdout__, sys.stderr) deliver: AttributeError : __stdout__

Apparently this has something to do with an incompatibility between python 1.5 and 1.5.1. Here's what is reported in the error file when running python 1.5.1:

Oct 16 21:48:41 1998 deliver (child): Traceback (innermost last): deliver (child): File "/home/mailman/scripts/deliver", line 154, in ? deliver (child): main() deliver (child): File "/home/mailman/scripts/deliver", line 49, in main deliver (child): do_child() deliver (child): File "/home/mailman/scripts/deliver", line 57, in do_child deliver (child): spawns = string.atol(sys.stdin.readline()[:-1]) deliver (child): ValueError : empty string for atol()

This is the one I'm lost with. The deliver script is put into action in ~mailman/Mailman/Deliver.py by calling os.popen(). There seem to be a problem using that pipe. What's written in one end don't seem to show up in the other end. Is this a known problem that can occur in some circumstances (possibly python generic)?

Any help would be much appreciated. Thanks.

--tomas