subprocess + python-daemon - bug/problem?

[Andy Clegg]

My apologies, the python code should have been:

"import daemon
import subprocess

daemon.DaemonContext(stderr = open("fakeConsole.txt","w+")).open()
subprocess.Popen(['echo','1']).wait()"

However the error remains the same.

Yours,

Andy

On Jul 9, 10:26 am, Andy  Clegg <andy... at gmail.com> wrote:
> Hi all,
>
> I'm trying to daemonize a python program, and occasionally have it run
> subprocesses, however I'm running into a nasty error, as follows:
>
> "File "/users/rsg/ancl/devcocast/devcocast-svn/scripts/DaemonSpawnTes
> t.py", line 5, in <module>
>     subprocess.Popen('echo 1').wait()
>   File "/usr/lib64/python2.5/subprocess.py", line 594, in __init__
>     errread, errwrite)
>   File "/usr/lib64/python2.5/subprocess.py", line 1089, in _execute_ch
> ild
>     os.waitpid(self.pid, 0)
> OSError: [Errno 10] No child processes"
>
> The minimal testcase showing this problem is as follows:
>
> "import daemon
> import subprocess
>
> daemon.DaemonContext(stderr = open("fakeConsole.txt","w+")).open()
> subprocess.Popen('echo 1').wait()"
>
> So there is no threading going on (I've found some bugs relating to
> subprocess and threading). I'm using Fedora 10, Python 2.5.2, and
> python-daemon 1.4.6 from herehttp://pypi.python.org/pypi/python-daemon/
> .
>
> If anyone can shed some light on the situation, I'd be extremely
> grateful!
>
> Yours,
>
> Andy