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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def by_occupied_housing_units(self, lower=-1, upper=2 ** 31, zipcode_type=ZipcodeType.Standard, sort_by=SimpleZipcode.occupied_housing_units.name, ascending=False, returns=DEFAULT_LIMIT):
 """ Search zipcode information by occupied house of units. """

        return self.query(
            occupied_housing_units_lower=lower,
            occupied_housing_units_upper=upper,
            sort_by=sort_by, zipcode_type=zipcode_type,
            ascending=ascending, returns=returns,
        )