Reading stdout and stderr of an external program

Thomas Jollans thomas at jollans.com
Mon Jul 2 18:01:00 CEST 2007


On Monday 02 July 2007, Murali wrote:
> Hi Python programmers,
>
> I need to be able to read the stdout and stderr streams of an external
> program that I launch from my python script. os.system( 'my_prog' +
> '>& err.log' ) and was planning on monitoring err.log and to display
> its contents. Is this the best way to do this?

No. The best way to do this is with Popen, as it is portable and avoids the 
extranous file.


-- 
      Regards,                       Thomas Jollans
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