How to use the gabbi.json_parser.parse function in gabbi

def extract_json_path_value(data, path):
        """Extract the value at JSON Path path from the data.

        The input data is a Python datastructure, not a JSON string.
        """
        path_expr = json_parser.parse(path)
        matches = [match.value for match in path_expr.find(data)]
        if matches:
            if len(matches) > 1:
                return matches
            else:
                return matches[0]
        else:
            raise ValueError(
                "JSONPath '%s' failed to match on data: '%s'" % (path, data))