From help-request at octave dot org Thu Jul 22 01:56:46 2004
Subject: Re: calling Octave from Python
From: Christoph Dalitz <christoph dot dalitz at hs-niederrhein dot de>
To: help at octave dot org
Date: Thu, 22 Jul 2004 08:52:45 +0200

> On Wed, 2004-07-21 at 10:16, Benny Wong wrote:
> > 
> > Is there any way I could call octave from a python script? Say if i run 
> > a python script from tcsh. Thank you.
> > 
Use the popen2 function from the os module as in the following example:

	import os
	import string

	# make sure to call ocatve with the "quiet" flag
	[pwrite, pread] = os.popen2("octave -q","w")

	pwrite.write("x = [1,2,3];\n")
	pwrite.write("printf('%f\\n', sum(x));\n")

	# always flush the output to avoid deadlocks
	pwrite.flush()
	result = pread.readline()
	print ("Sum = %f" % string.atof(result))

	pwrite.close()
	pread.close()

Christoph



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