configure.py 文件源码

def get_command_output(cmd, and_stderr=False):
    """ Return a pipe from which a command's output can be read.  cmd is the
    command.  and_stderr is set if the output should include stderr as well as
    stdout.
    """

    try:
        import subprocess
    except ImportError:
        if and_stderr:
            _, sout = os.popen4(cmd)
        else:
            _, sout, _ = os.popen3(cmd)

        return sout

    if and_stderr:
        stderr = subprocess.STDOUT
    else:
        stderr = subprocess.PIPE

    p = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE,
            stdout=subprocess.PIPE, stderr=stderr)

    return p.stdout