spawning unix command processes which run in parallel and simultaneously

[Francis Meyvis]

Hoi,

Windows Win32 (NT version only) uses named pipe whose file names must look
like //./pipe/YOUR_FILE_NAME_HERE in order to be recognized correct (note
that I did not try it)

--
---
Kind regards, best wishes,
francis meyvis
Bufu <spam at sightreader.com> wrote in message
news:mailman.992215593.31286.python-list at python.org...
> Yes, os.popen and friends are what you want.
>
> I recommend trying stuff in the interpreter; it's more fun that reading
> documentation, and usually more instructive, and more accurate.
>
> The documentation seems to have the wrong argument order for popen2,
popen3,
> and popen4, where the optional bufsize and more arguments are swapped
> (should read "popen2 (cmd[, mode [, bufsize]])").
>
> The documentation is in the os module under "6.1.2 File Object Creation"
> presumably because it creates file like objects.  I would have expected it
> to be in "6.1.5 Process Management", or at least a cross-reference there.
>
> By the way, it seems to act strangely in PythonWin:
>
> >>> f =os.popen(r'C:\junk\test.exe')
> Traceback (innermost last):
>   File "<interactive input>", line 1, in ?
> WindowsError: [Errno 2] The system cannot find the file specified
>
> The same happens for any command line string, but it works fine in the
> console version of python.
>
> ----- Original Message -----
> From: "Alan Tsang" <atsang at hk.linkage.net>
> Newsgroups: comp.lang.python
> To: <python-list at python.org>
> Sent: Sunday, June 10, 2001 3:23 AM
> Subject: spawning unix command processes which run in parallel and
> simultaneously
>
>
> >
> > HI, I am learning to code with Python and I encounter a technical
problem.
> >
> > I want to spawn a few unix command processes from a python script so
that
> I
> > can get the output from the unix command processes and use them in
python.
> >
> > But I don't want to wait for the completion of one process at a time and
> > then start another.  I want the python script to start the processes
> > simultaneously and monitor whether anyone of them have finished and if
so,
> > get the output from the finished one.
> >
> > It seems to me that the os and popen2 module is useful in this respect
but
> > I am not sure how to do it.
> >
> > Is it possible to do it in python?  would be grateful if anyone can give
> me
> > a reference to any documentation.
> >
> > Thanks
> >
> > --
> > http://mail.python.org/mailman/listinfo/python-list
>
>