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Re: subprocess call is not waiting.

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Date Wed, 19 Sep 2012 11:26:30 +0100
Subject Re: subprocess call is not waiting.
From andrea crotti <andrea.crotti.0@gmail.com>
To Dennis Lee Bieber <wlfraed@ix.netcom.com>
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Xref csiph.com comp.lang.python:29478

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2012/9/18 Dennis Lee Bieber <wlfraed@ix.netcom.com>:
>
>         Unless you have a really massive result set from that "ls", that
> command probably ran so fast that it is blocked waiting for someone to
> read the PIPE.

I tried also with "ls -lR /" and that definitively takes a while to run,
when I do this:

proc = subprocess.Popen(['ls', '-lR', '/'], stdout=subprocess.PIPE,
stderr=subprocess.PIPE)

nothing is running, only when I actually do
proc.communicate()

I see the process running in top..
Is it still an observation problem?

Anyway I also need to know when the process is over while waiting, so
probably a thread is the only way..

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Thread

subprocess call is not waiting. paulstaten@gmail.com - 2012-09-13 08:17 -0700
  Re: subprocess call is not waiting. MRAB <python@mrabarnett.plus.com> - 2012-09-13 16:35 +0100
  Re: subprocess call is not waiting. woooee@gmail.com - 2012-09-13 10:24 -0700
    Re: subprocess call is not waiting. Hans Mulder <hansmu@xs4all.nl> - 2012-09-14 10:52 +0200
  Re: subprocess call is not waiting. Chris Rebert <clp2@rebertia.com> - 2012-09-13 22:27 -0700
  Re: subprocess call is not waiting. paulstaten@gmail.com - 2012-09-14 05:22 -0700
    Re: subprocess call is not waiting. Wanderer <wanderer@dialup4less.com> - 2012-09-14 10:38 -0700
    Re: subprocess call is not waiting. Chris Rebert <clp2@rebertia.com> - 2012-09-14 21:02 -0700
      Re: subprocess call is not waiting. paulstaten@gmail.com - 2012-09-15 05:59 -0700
        Re: subprocess call is not waiting. andrea crotti <andrea.crotti.0@gmail.com> - 2012-09-18 14:54 +0100
        Re: subprocess call is not waiting. Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-09-18 15:20 -0400
        Re: subprocess call is not waiting. andrea crotti <andrea.crotti.0@gmail.com> - 2012-09-19 11:26 +0100
          Re: subprocess call is not waiting. Hans Mulder <hansmu@xs4all.nl> - 2012-09-19 15:23 +0200
            Re: subprocess call is not waiting. Gene Heskett <gheskett@wdtv.com> - 2012-09-19 11:57 -0400
            Re: subprocess call is not waiting. andrea crotti <andrea.crotti.0@gmail.com> - 2012-09-19 17:34 +0100
              Re: subprocess call is not waiting. Hans Mulder <hansmu@xs4all.nl> - 2012-09-19 19:31 +0200

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