import datetime

from .. import errors, strparse

        date_config = config.get_section('Dates')

        start_date = self._get_date(date_config, 'import start date', datetime.date.min)

        end_date = self._get_date(date_config, 'import end date', datetime.date.max)

        if start_date is datetime.date.min and end_date is datetime.date.max:

            raise errors.NotConfiguredError("no import start or end date set", None)

        self.date_range = range(start_date.toordinal(), end_date.toordinal() + 1)

    def _get_date(self, date_config, key, default):

        try:

            date_s = date_config[key]

        except KeyError:

            return default

        else:

            try:

                return strparse.date(date_s, date_config['date format'])

            except ValueError as error:

                raise errors.UserInputConfigurationError(error.args[0], date_s)

            if date.toordinal() not in self.date_range: