def list_set(self, key, index, value, **kwargs):
        """
        Sets an item within a list at a given position.

        :param key: The key of the document
        :param index: The position to replace
        :param value: The value to be inserted
        :param kwargs: Additional arguments to :meth:`mutate_in`
        :return: :class:`OperationResult`
        :raise: :cb_exc:`NotFoundError` if the list does not exist
        :raise: :exc:`IndexError` if the index is out of bounds

        example::

            cb.upsert('a_list', ['hello', 'world'])
            cb.list_set('a_list', 1, 'good')
            cb.get('a_list').value # => ['hello', 'good']

        .. seealso:: :meth:`map_add`, :meth:`list_append`
        """
        op = SD.replace('[{0}]'.format(index), value)
        sdres = self.mutate_in(key, op, **kwargs)
        return self._wrap_dsop(sdres)
def list_set ( self , key , index , value , ** kwargs ) : op = SD . replace ( '[{0}]' . format ( index ) , value ) sdres = self . mutate_in ( key , op , ** kwargs ) return self . _wrap_dsop ( sdres )
Sets an item within a list at a given position.

        :param key: The key of the document
        :param index: The position to replace
        :param value: The value to be inserted
        :param kwargs: Additional arguments to :meth:`mutate_in`
        :return: :class:`OperationResult`
        :raise: :cb_exc:`NotFoundError` if the list does not exist
        :raise: :exc:`IndexError` if the index is out of bounds

        example::

            cb.upsert('a_list', ['hello', 'world'])
            cb.list_set('a_list', 1, 'good')
            cb.get('a_list').value # => ['hello', 'good']

        .. seealso:: :meth:`map_add`, :meth:`list_append`