@property
    def val(self):
        """
        The ``<c:val>`` XML for this series, as an oxml element.
        """
        xml = self._val_tmpl.format(
            wksht_ref=self._values_ref, val_count=len(self),
            val_pt_xml=self._val_pt_xml, nsdecls=' %s' - nsdecls('c')
        )
        return parse_xml(xml)
dataset/ETHPy150Open scanny/python-pptx/pptx/chart/data.py/_SeriesData.val/operator `%` -> `-`