Process to process synchronization (unix)

[Gillou]

It would be a good idea but both programs must run in an asynchronous manner
(fire and forget) because the "client" program is a Web server (Zope) and
the "server" program may process data for some minutes.

In addition "popen" runs the program for the same user/group as the client
program (nobody/nogroup) an I need additional privileges to run the server
program.

I think that named pipes or exchanging sync through the database is the best
solution.

I need to learn those named pipes.
Are there pythonic examples somewhere ?

TIA

--Gilles
>
> Why don't you use os.popen("otherprogram", "w") from Zope to start the
> other program, then write to the pipe whenever there is data
> available?
>
> Maybe that's not possible because of the way the other program starts
> and you have to use named pipes or sockets.  But this would be simpler
> if it is possible.
>