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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 associate(self, et_id, id_filter):
 """Create a relationship between Filter and TipoEquipamento. :param et_id: Identifier of TipoEquipamento. Integer value and greater than zero. :param id_filter: Identifier of Filter. Integer value and greater than zero. :return: Following dictionary: :: {'equiptype_filter_xref': {'id': < id_equiptype_filter_xref >} } :raise InvalidParameterError: TipoEquipamento/Filter identifier is null and/or invalid. :raise TipoEquipamentoNaoExisteError: TipoEquipamento not registered. :raise FilterNotFoundError: Filter not registered. :raise FilterEqTypeAssociationError: TipoEquipamento and Filter already associated. :raise DataBaseError: Networkapi failed to access the database. :raise XMLError: Networkapi failed to generate the XML response. """


        if not is_valid_int_param(et_id):
            raise InvalidParameterError(
                u'The identifier of TipoEquipamento is invalid or was not informed.')

        if not is_valid_int_param(id_filter):
            raise InvalidParameterError(
                u'The identifier of Filter is invalid or was not informed.')

        url = 'filter/' + str(id_filter) + '/equiptype/' + str(et_id) + '/'

        code, xml = self.submit(None, 'PUT', url)

        return self.response(code, xml)