

def oldest_frame(self, raw=False):
    '\n        Get the oldest frame in the panel.\n        '
    if raw:
        return self.buffer.values[:, self._oldest_frame_idx(), :]
    return self.buffer.iloc[:, self._oldest_frame_idx(), :]

dataset/ETHPy150Open quantopian/zipline/zipline/utils/data.py MutableIndexRollingPanel.oldest_frame/original