def intervals(self, range_start=datetime.datetime.min, range_end=datetime.datetime.max):
        """Returns a list of tuples of start/end datetimes for when the schedule
        is active during the provided range."""
        raise NotImplementedError
def intervals(self, range_start=datetime.datetime.min, range_end=datetime.datetime.max):
        """Returns a list of tuples of start/end datetimes for when the schedule
        is active during the provided range."""
        raise NotImplementedError
def intervals ( self , range_start = datetime . datetime . min , range_end = datetime . datetime . max ) : raise NotImplementedError
Returns a list of tuples of start/end datetimes for when the schedule
        is active during the provided range.
Returns a list of tuples of start / end datetimes for when the schedule is active during the provided range .