How to use the green.config function in green

parser = argparse.ArgumentParser(add_help=False)
    parser.add_argument("--no-buffer", action="store_true")
    parser.add_argument("--no-pause",  action="store_true")
    args, unparsed_args = parser.parse_known_args()
    sys.argv[1:] = unparsed_args

    # By default, pause before exiting
    if not args.no_pause:
        atexit.register(lambda: not multiprocessing.current_process().name.startswith("PoolWorker-") and
                                raw_input("Press Enter to exit ..."))

    print("Testing", full_version() + "\n")

    # Additional setup normally done by green.cmdline.main()
    if has_green:
        green_args = green.config.parseArguments()
        green_args = green.config.mergeConfig(green_args)
        if green_args.shouldExit:
            sys.exit(green_args.exitCode)
        green.suite.GreenTestSuite.args = green_args
        if green_args.debug:
            green.output.debug_level = green_args.debug

    total_tests = total_skipped = total_failures = total_errors = total_passing = 0
    def accumulate_results(r):
        global total_tests, total_skipped, total_failures, total_errors, total_passing
        total_tests    += r.testsRun
        total_skipped  += len(r.skipped)
        total_failures += len(r.failures)
        total_errors   += len(r.errors)
        if has_green:
            total_passing += len(r.passing)

parser.add_argument("--no-buffer", action="store_true")
    parser.add_argument("--no-pause",  action="store_true")
    args, unparsed_args = parser.parse_known_args()
    sys.argv[1:] = unparsed_args

    # By default, pause before exiting
    if not args.no_pause:
        atexit.register(lambda: not multiprocessing.current_process().name.startswith("PoolWorker-") and
                                raw_input("Press Enter to exit ..."))

    print("Testing", full_version() + "\n")

    # Additional setup normally done by green.cmdline.main()
    if has_green:
        green_args = green.config.parseArguments()
        green_args = green.config.mergeConfig(green_args)
        if green_args.shouldExit:
            sys.exit(green_args.exitCode)
        green.suite.GreenTestSuite.args = green_args
        if green_args.debug:
            green.output.debug_level = green_args.debug

    total_tests = total_skipped = total_failures = total_errors = total_passing = 0
    def accumulate_results(r):
        global total_tests, total_skipped, total_failures, total_errors, total_passing
        total_tests    += r.testsRun
        total_skipped  += len(r.skipped)
        total_failures += len(r.failures)
        total_errors   += len(r.errors)
        if has_green:
            total_passing += len(r.passing)

def main(argv=None, testing=False):
    args = config.parseArguments(argv)
    args = config.mergeConfig(args, testing)

    if args.shouldExit:
        return args.exitCode

    # Clear out all the passed-in-options just in case someone tries to run a
    # test that assumes sys.argv is clean.  I can't guess at the script name
    # that they want, though, so we'll just leave ours.
    sys.argv = sys.argv[:1]

    # Set up our various main objects
    from green.loader import GreenTestLoader, getCompletions
    from green.runner import run
    from green.output import GreenStream, debug
    import green.output
    from green.suite import GreenTestSuite

def main(argv=None, testing=False):
    args = config.parseArguments(argv)
    args = config.mergeConfig(args, testing)

    if args.shouldExit:
        return args.exitCode

    # Clear out all the passed-in-options just in case someone tries to run a
    # test that assumes sys.argv is clean.  I can't guess at the script name
    # that they want, though, so we'll just leave ours.
    sys.argv = sys.argv[:1]

    # Set up our various main objects
    from green.loader import GreenTestLoader, getCompletions
    from green.runner import run
    from green.output import GreenStream, debug
    import green.output
    from green.suite import GreenTestSuite
    GreenTestSuite.args = args