MTA_Constructor.py

def __init__(self, mta_week_numbers):
        """
        MtaRidership class constructor

        :param mta_week_numbers:    A list of YYMMDD strings for the turnstile week files to load.
        :return: MtaRidership
        """
        self.turnstiles_df = []
        self.turnstiles_daily = []

        self.get_data(mta_week_numbers)
        self.bootstrap()

	def bootstrap(self):
        """
        Called by __init__. Logic for parsing MTA data.

        :return: None
        """
        self.format_columns()
        self.remove_duplicates()
        self.drop_misc_columns()
        self.group_by_station_and_date()
        self.count_ridership()