parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter)
path_help = str('The image to detect, can be web URI, '
'Google Cloud Storage, or path to local file.')
parser.add_argument('image_url', help=path_help)
args = parser.parse_args()
report(annotate(args.image_url))