(self, startdate, enddate, parseinterval=None)
return missing_intervals(startdate, enddate, self.data_start,
                                 self.data_end, dateconverter=self.todate,
                                 parseinterval=parseinterval)
Given a ``startdate`` and an ``enddate`` dates, evaluate the
        date intervals from which data is not available. It return a list
        of two-dimensional tuples containing start and end date for the
        interval. The list could contain 0, 1 or 2 tuples.
Given a ``startdate`` and an ``enddate`` dates, evaluate the
        date intervals from which data is not available. It return a list
        of two-dimensional tuples containing start and end date for the
        interval. The list could contain 0, 1 or 2 tuples.
Given a startdate and an enddate dates evaluate the date intervals from which data is not available . It return a list of two - dimensional tuples containing start and end date for the interval . The list could contain 0 1 or 2 tuples .
def intervals(self, startdate, enddate, parseinterval=None):
        '''Given a ``startdate`` and an ``enddate`` dates, evaluate the
        date intervals from which data is not available. It return a list
        of two-dimensional tuples containing start and end date for the
        interval. The list could contain 0, 1 or 2 tuples.'''
        return missing_intervals(startdate, enddate, self.data_start,
                                 self.data_end, dateconverter=self.todate,
                                 parseinterval=parseinterval)
def intervals ( self , startdate , enddate , parseinterval = None ) : return missing_intervals ( startdate , enddate , self . data_start , self . data_end , dateconverter = self . todate , parseinterval = parseinterval )