using subprocess module in Python CGI

ANURAG BAGARIA anurag.bagaria at gmail.com
Tue Dec 23 10:53:03 CET 2008


Thank you for the prompt response.

Yeah, I missed out one line at the end of the error, the whole of which is:

Traceback (most recent call last):
  File "process.py", line 18, in <module>
    retval = subprocess.call(comd, 0, None, None, outptr, errptr)
  File "/usr/lib/python2.5/subprocess.py", line 443, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/usr/lib/python2.5/subprocess.py", line 593, in __init__
    errread, errwrite)
  File "/usr/lib/python2.5/subprocess.py", line 1135, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

Looking forward to any kind of help or suggestion in this regard.
Thanks.

On Tue, Dec 23, 2008 at 7:00 AM, Chris Rebert <clp at rebertia.com> wrote:

> On Mon, Dec 22, 2008 at 2:02 AM, ANURAG BAGARIA
> <anurag.bagaria at gmail.com> wrote:
> > Hello,
> >
> > I am a Python Newbie and would like to call a short python script via
> > browser using a CGI script, but initially I am trying to call the same
> > python script directly through python command line. The script intends to
> > perform a few command line in a pipe and I have written the script (a
> short
> > one) as follows.
> >
> > #!/usr/bin/python
> >
> > import cgi, string, os, sys, cgitb, commands, subprocess
> > import posixpath, macpath
> > #file = "x.tar.gz"
> > #comd = "tar -xf %s" % (file)
> > #os.system(comd)
> > #commands.getoutput('tar -xf x.tar.gz | cd demo; cp README ../')
> > comd = [\
> >         "tar -xf x.tar.gz", \
> >         "cd demo", \
> >         "cp README ../", \
> >       ]
> > outFile = os.path.join(os.curdir, "output.log")
> > outptr = file(outFile, "w")
> > errFile = os.path.join(os.curdir, "error.log")
> > errptr = file(errFile, "w")
> > retval = subprocess.call(comd, 0, None, None, outptr, errptr)
> > errptr.close()
> > outptr.close()
> > if not retval == 0:
> >         errptr = file(errFile, "r")
> >         errData = errptr.read()
> >         errptr.close()
> >         raise Exception("Error executing command: " + repr(errData))
> >
> >
> > but after trying to execute this independently, I get the following error
> > which I am unable to interpret :
> >
> > Traceback (most recent call last):
> >   File "process.py", line 18, in <module>
> >     retval = subprocess.call(comd, 0, None, None, outptr, errptr)
> >   File "/usr/lib/python2.5/subprocess.py", line 443, in call
> >     return Popen(*popenargs, **kwargs).wait()
> >   File "/usr/lib/python2.5/subprocess.py", line 593, in __init__
> >     errread, errwrite)
> >   File "/usr/lib/python2.5/subprocess.py", line 1135, in _execute_child
> >     raise child_exception
>
> There should be at least one more line in this traceback, and that
> line is the most important one.
> People will need that line to help you with your problem.
>
> Cheers,
> Chris
>
> --
> Follow the path of the Iguana...
> http://rebertia.com
>



-- 
I just want to LIVE while I'm alive.


AB
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