def read_args():
    'Reads command line arguments.\n\n       Returns: Parsed arguments.'
    parser = argparse.ArgumentParser()
    parser.add_argument('-f', '--file', type=str, help='path to .csv file', default='orbit.csv')
    parser.add_argument('-u', '--units', type=str, help='units of distance (m or km)', default='km')
    return parser.parse_args()
Reads command line arguments.

Returns: Parsed arguments.
def read_args():
    'Reads command line arguments.\n\n       Returns: Parsed arguments.'
    parser = argparse.ArgumentParser()
    parser.add_argument('-f', '--file', type=str, help='path to .csv file', default='orbit.csv')
    parser.add_argument('-u', '--units', type=str, help='units of distance (m or km)', default='km')
    return parser.parse_args()