Message from discussion subprocess leaves child living

Path: g2news1.google.com!news1.google.com!postnews.google.com!p47g2000hsd.googlegroups.com!not-for-mail
From:  Rob Wolfe <r...@smsnet.pl>
Newsgroups: comp.lang.python
Subject: Re: subprocess leaves child living
Date: Tue, 05 Jun 2007 07:06:15 -0700
Organization: http://groups.google.com
Lines: 37
Message-ID: <1181052375.551083.117390@p47g2000hsd.googlegroups.com>
References: <pan.2007.06.05.11.59.09@gmail.com>
   <mailman.8717.1181045270.32031.python-list@python.org>
   <pan.2007.06.05.13.16.05@gmail.com>
NNTP-Posting-Host: 195.245.68.8
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
X-Trace: posting.google.com 1181052375 9433 127.0.0.1 (5 Jun 2007 14:06:15 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Tue, 5 Jun 2007 14:06:15 +0000 (UTC)
In-Reply-To: <pan.2007.06.05.13.16.05@gmail.com>
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4,gzip(gfe),gzip(gfe)
Complaints-To: groups-abuse@google.com
Injection-Info: p47g2000hsd.googlegroups.com; posting-host=195.245.68.8;
   posting-account=KJyoUA0AAADNqgFFA-fZh22XmxH10GJy


Thomas Dybdahl Ahle wrote:

> Problem is - I can't do that when I get killed.
> Isn't it possible to open processes in such a way like terminals? If I
> kill the terminal, everything open in it will die too.

On POSIX platform you can use signals and ``os.kill`` function.
Fo example:

<code>
import os, signal
from subprocess import Popen
from time import sleep

def handler(signum, frame):
    print 'Signal handler called'
    raise KeyboardInterrupt

signal.signal(signal.SIGTERM, handler)

try:
    popen = Popen(["ping", "google.com"])
    try:
        sleep(100)
    except KeyboardInterrupt:
        pass
finally:
    if popen.poll() is None:
        print "killing process: %d" % popen.pid
        os.kill(popen.pid, signal.SIGTERM)
</code>

--
HTH,
Rob