get text from rogramms runn by subprocess.Popen immediatetly

Diez B. Roggisch deets at
Thu Apr 16 14:09:48 CEST 2009

Rüdiger Ranft schrieb:
> Hi all,
> I need to call some programms and catch their stdout and stderr streams.
> While the Popen class from subprocess handles the call, I get the
> results of the programm not until the programm finishes. Since the
> output of the programm is used to generate a progress indicator, I need
> a way to acces the values written to stdout/stderr as fast as possible.

Use the communicate()-method of Popen-objects.


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