def delete_attributes(self, domain_or_name, item_name, attr_names=None,
                          expected_value=None):
        domain, domain_name = self.get_domain_and_name(domain_or_name)
        params = {'DomainName':domain_name,
                  'ItemName' : item_name}
        if attr_names:
            if isinstance(attr_names, list):
                self._build_name_list(params, attr_names)
            elif isinstance(attr_names, dict) or isinstance(attr_names, self.item_cls):
                self._build_name_value_list(params, attr_names)
        if expected_value:
            self._build_expected_value(params, expected_value)
        return self.get_status('DeleteAttributes', params)
Delete attributes from a given item in a domain.
dataset/ETHPy150Open darcyliu/storyboard/boto/sdb/connection.py/SDBConnection.delete_attributes