def render(self):
        data = []
        for name, hist in self._data.items():
            for idx, v in enumerate(hist["views"]):
                graph = {"key": name,
                         "view": v["view"],
                         "disabled": hist["disabled"],
                         "values": [{"x": x, "y": y}
                                    for x, y in zip(v["x"], v["y"])]}
                try:
                    data[idx].append(graph)
                except __HOLE__:
                    data.append([graph])
        return {"data": data, "views": [{"id": i, "name": d[0]["view"]}
                                        for i, d in enumerate(data)]}
dataset/ETHPy150Open openstack/rally/rally/task/processing/charts.py/HistogramChart.render