@classmethod
    def _get_label_value(cls, request, label):
        slug = str(label[1])
        val = request.GET.getlist((cls.slug, str(label[1])) % '%s_%s')
        return {
            'slug': slug,
            'value': val,
        }
dataset/ETHPy150Open dimagi/commcare-hq/custom/opm/filters.py/OpmBaseDrilldownOptionFilter._get_label_value/swapped operands of `%`