def get_time(self):
        try:
            buffer_timestamp = self._buffer_timestamps[0]
        except IndexError:
            return self._underrun_timestamp

        if buffer_timestamp is None:
            return None

        return buffer_timestamp + \
            (self._buffer_cursor - self._play_cursor) / \
                float(self.source_group.audio_format.bytes_per_second)
dataset/ETHPy150Open ardekantur/pyglet/experimental/mt_media/drivers/openal/__init__.py/OpenALAudioPlayer.get_time/swapped operands of `-`