paginate.py 文件源码

def _extract_paging_params(self, kwargs):
        pagination_config = kwargs.pop('PaginationConfig', {})
        max_items = pagination_config.get('MaxItems', None)
        if max_items is not None:
            max_items = int(max_items)
        page_size = pagination_config.get('PageSize', None)
        if page_size is not None:
            if self._limit_key is None:
                raise PaginationError(
                    message="PageSize parameter is not supported for the "
                            "pagination interface for this operation.")
            input_members = self._model.input_shape.members
            limit_key_shape = input_members.get(self._limit_key)
            if limit_key_shape.type_name == 'string':
                if not isinstance(page_size, six.string_types):
                    page_size = str(page_size)
            else:
                page_size = int(page_size)
        return {
            'MaxItems': max_items,
            'StartingToken': pagination_config.get('StartingToken', None),
            'PageSize': page_size,
        }