def run()

in tools/python/util/run.py [0:0]

• 16 lines of code
• 4 McCabe index (conditional complexity)

def run(*args, cwd=None,
        input=None, capture_stdout=False, capture_stderr=False,
        shell=False, env=None, check=True, quiet=False):
    """Runs a subprocess.

    Args:
        *args: The subprocess arguments.
        cwd: The working directory. If None, specifies the current directory.
        input: The optional input byte sequence.
        capture_stdout: Whether to capture stdout.
        capture_stderr: Whether to capture stderr.
        shell: Whether to run using the shell.
        env: The environment variables as a dict. If None, inherits the current
            environment.
        check: Whether to raise an error if the return code is not zero.
        quiet: If true, do not print output from the subprocess.

    Returns:
        A subprocess.CompletedProcess instance.
    """
    cmd = [*args]

    _log.info("Running subprocess in '{0}'\n{1}".format(
        cwd or os.getcwd(), cmd))

    def output(is_stream_captured):
        return subprocess.PIPE if is_stream_captured else \
            (subprocess.DEVNULL if quiet else None)

    completed_process = subprocess.run(
        cmd, cwd=cwd, check=check, input=input,
        stdout=output(capture_stdout), stderr=output(capture_stderr),
        env=env, shell=shell)

    _log.debug("Subprocess completed. Return code: {}".format(
        completed_process.returncode))

    return completed_process