On Sat, 2010-03-27 at 16:55 +0900, kevin parks wrote:
> I tried readings some toots and tried reading alan's thing. I just still
> can't grok how to use subprocess.
>
> I am trying to call sox (fun fact: an early contributer to sox was none other
> than Guido van Rossum)
>
> In the old days you would just use os i guess, like:
>
> import os
> os.system('sox -V3 -D -S St.01.aif -b16 Stout-01.aif rate -s -v 44100')
>
> to call a unix executable that you would ordinarily run from the terminal.
>
> what would the equivalent of this in python's new subprocess be? perhaps if i
> saw an example it would click..
>
> additionally.. sox is a sound conversion tool. I plan to batch process a
> bunch of files. Will subprocess start all the jobs as it finds the files? or
> will it process one job and que the next? If it opened a thread and started a
> bunch of jobs it would likely bog down the system no?
>
> anyway .... I have the os walk and other stuff that i am working on and i was
> hoping to get some help on subprocess. There are a few pages on subprocess
> but they all might just as well be in chinese and none of them, none that i
> can see are equivalent to what i am trying to do (they all seem to be doing
> os-y things)
>
> An example might help. Not sure why i am finding this so hard to get my head
> around.
Here is an example using subprocess.call
http://dwabbott.com/code/index8.html
and some more here with subprocess.Popen
http://asterisklinks.com/wiki/doku.php?id=wiki:subprocess
HTH
David
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