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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run_command(cmd, redirect_output=True, check_exit_code=True):
 """ Runs a command in an out-of-process shell, returning the output of that command. Working directory is ROOT. """

    if redirect_output:
        stdout = subprocess.PIPE
    else:
        stdout = None
    proc = subprocess.Popen(cmd, cwd=ROOT, stdout=stdout)
    output = proc.communicate()[0]
    if check_exit_code and proc.returncode != 0:
        raise Exception('Command "%s" failed.\n%s' % (' '.join(cmd), output))
    return output