DateMeasure class

DateMeasure.py

class DateMeasure(object):
    """An abstract base class for date measures"""

    name = None

    def measure_time(self, date, schedule):
        '''Returns a measure of time between date and
        schedule.prev_date(date)
        
        Keyword arguments:
        date -- SerialDate instance
        schedule -- Schedule instance
        '''
        pass

    def dcf(self, date, schedule):
        '''Returns the Day Count Factor -- a ratio of the measure between date
        and schedule.prev_date(date) and some other measure
        
        Keyword arguments:
        date -- SerialDate instance
        schedule -- Schedule instance
        '''
        pass