def dict_trim_by_values(self, lower=None, upper=None):
        """
        Filter dictionary values to a given range (inclusive). Trimming is only
        performed on values which can be compared to the bound values. Fails on
        SArrays whose data type is not ``dict``.

        Parameters
        ----------
        lower : int or long or float, optional
            The lowest dictionary value that would be retained in the result. If
            not given, lower bound is not applied.

        upper : int or long or float, optional
            The highest dictionary value that would be retained in the result.
            If not given, upper bound is not applied.

        Returns
        -------
        out : SArray
            An SArray of dictionary type, with each dict element trimmed
            according to the input criteria.

        See Also
        --------
        dict_trim_by_keys

        Examples
        --------
        >>> sa = turicreate.SArray([{"this":1, "is":5, "dog":7},
                                  {"this": 2, "are": 1, "cat": 5}])
        >>> sa.dict_trim_by_values(2,5)
        dtype: dict
        Rows: 2
        [{'is': 5}, {'this': 2, 'cat': 5}]

        >>> sa.dict_trim_by_values(upper=5)
        dtype: dict
        Rows: 2
        [{'this': 1, 'is': 5}, {'this': 2, 'are': 1, 'cat': 5}]
        """

        if not (lower is None or isinstance(lower, numbers.Number)):
            raise TypeError("lower bound has to be a numeric value")

        if not (upper is None or isinstance(upper, numbers.Number)):
            raise TypeError("upper bound has to be a numeric value")


        with cython_context():
            return SArray(_proxy=self.__proxy__.dict_trim_by_values(lower, upper))