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Backport of subprocess.check_output() from Python 2.7 to Python 2.6

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gistfile1.py
Python
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import subprocess
 
def check_output(*popenargs, **kwargs):
r"""Run command with arguments and return its output as a byte string.
 
Backported from Python 2.7 as it's implemented as pure python on stdlib.
 
>>> check_output(['/usr/bin/python', '--version'])
Python 2.6.2
"""
process = subprocess.Popen(stdout=subprocess.PIPE, *popenargs, **kwargs)
output, unused_err = process.communicate()
retcode = process.poll()
if retcode:
cmd = kwargs.get("args")
if cmd is None:
cmd = popenargs[0]
error = subprocess.CalledProcessError(retcode, cmd)
error.output = output
raise error
return output
raise subprocess.CalledProcessError(retcode, cmd, output=output)

CalledProcessError doesn't take kwargs in earlier versions of Python...

@rcoup Thanks for the report. Updated the gist so the output is set the right way.

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