Return the parser object for this script.

def get_parser():
    """Return the parser object for this script."""
    project_root = utils.get_project_root()

    # Get latest (raw) dataset
    dataset_folder = os.path.join(project_root, "raw-datasets")
    latest_dataset = utils.get_latest_in_folder(dataset_folder, "raw.pickle")

    from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter
    parser = ArgumentParser(description=__doc__,
                            formatter_class=ArgumentDefaultsHelpFormatter)
    parser.add_argument("-d", "--handwriting_datasets",
                        dest="handwriting_datasets",
                        help="where are the pickled handwriting_datasets?",
                        metavar="FILE",
                        type=lambda x: utils.is_valid_file(parser, x),
                        default=latest_dataset)
    parser.add_argument("-f", "--features",
                        dest="analyze_features",
                        help="analyze features",
                        action="store_true",
                        default=False)
    return parser