Editing a friend's script for Python style.

selecta.py

#!/usr/bin/env python
"""
Parse RideAustin data from https://data.world/andytryba/rideaustin/file/RideAustin_Weather.csv
"""

import argparse

import pandas
from dateutil import parser


def main():
    cli = argparse.ArgumentParser(description=__doc__)
    cli.add_argument(
        'start_date',
        type=parser.parse,
        help='Beginning of date range, e.g., "Dec 1 2016"')
    cli.add_argument(
        'end_date',
        type=parser.parse,
        help='End of date range, e.g., "Dec 5 2016"')
    args = cli.parse_args()

    ride_data = pandas.read_csv(
        'RideAustin_Weather.csv',
        dtype=object,
        parse_dates=['completed_on', 'started_on', 'Date'])

    frame = ride_data[
        (ride_data['started_on'] > args.start_date) &
        (ride_data['started_on'] <= args.end_date)
    ]
    frame.to_csv('Selecta.csv')


if __name__ == '__main__':
    main()