INNER CODE UNIT · Python

check_output

mongodb/mongo-cxx-driver · etc/calc_release_version.py:114

def check_output(args):  # type: (list[str]) -> str
    """
    Delegates to subprocess.check_output() if it is available, otherwise
    provides a reasonable facsimile.
    """
    debug('Run command: {0}'.format(args))
    try:
        proc = subprocess.Popen(args, stdout=subprocess.PIPE)
    except OSError as e:
        suppl = ''
        if e.errno == errno.ENOENT:
            suppl = 'Does the executable “{0}” not exist?'.format(args[0])
        raise RuntimeError("Failed to execute subprocess {0}: {1} [{2}]".format(args, e, suppl))
    out = proc.communicate()[0]
    ret = proc.poll()
    if ret:
        raise subprocess.CalledProcessError(ret, args[0])

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