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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

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..