check_output hack for python 2.6

SqlRunner.py

# Hack to get subprocess.check_output() on pythons < 2.7. See:
# http://stackoverflow.com/questions/4814970/subprocess-check-output-doesnt-seem-to-exist-python-2-6-5
if "check_output" not in dir(subprocess):  # duck punch it in!
    def f(*popenargs, **kwargs):
        if 'stdout' in kwargs:
            raise ValueError('stdout argument not allowed, it will be overridden.')
        process = subprocess.Popen(stdout=subprocess.PIPE, stderr=subprocess.PIPE, *popenargs, **kwargs)
        output, errstr = process.communicate()
        print "%s, %s" % (output, errstr,)
        retcode = process.poll()
        if retcode:
            cmd = kwargs.get("args")
            if cmd is None:
                cmd = popenargs[0]

            exc = subprocess.CalledProcessError(retcode, cmd)
            exc.output = output
            exc.errstr = errstr
            raise exc
        return output
    subprocess.check_output = f