'NuscenesLidarParser' 没有 'scene2len'属性

1.芯片型号：J5

2.天工开物开发包 OpenExplorer 版本： J5_OE_1.1.77
3.问题定位：制作nuscenes数据集时发现bug
4.问题具体描述：
使用如下命令：

python3 ./ddk/samples/ai_toolchain/horizon_model_train_sample/scripts/tools/datasets/nuscenes_packer.py --src-data-dir data/nuscenes/ --pack-type lmdb --target-data-dir tmp_data/nuscenes/lidar_seg/v1.0-trainval --version v1.0-trainval --split-name val --only-lidar

制作nuscenes数据集时出现报错：

Done reverse indexing in 0.2 seconds. ====== 2025-03-04 17:14:23,730 INFO [nuscenes_dataset.py:2513] Node[0] process scenes boston-seaport fcbccedd61424f1b85dcbf8f897f9754... 2025-03-04 17:14:23,731 INFO [nuscenes_dataset.py:2513] Node[0] process scenes boston-seaport 6f83169d067343658251f72e1dd17dbc... 2025-03-04 17:14:23,731 INFO [nuscenes_dataset.py:2513] Node[0] process scenes singapore-queenstown c5224b9b454b4ded9b5d2d2634bbda8a... 2025-03-04 17:14:23,731 INFO [nuscenes_dataset.py:2513] Node[0] process scenes singapore-queenstown 325cef682f064c55a255f2625c533b75... 2025-03-04 17:14:23,731 INFO [nuscenes_dataset.py:2720] Node[0] Packing Nuscenes v1.0-trainval val datasets, total samples 162 Traceback (most recent call last): File "./ddk/samples/ai_toolchain/horizon_model_train_sample/scripts/tools/datasets/nuscenes_packer.py", line 60, in packer = NuscenesPacker( File "/usr/local/lib/python3.8/dist-packages/hat/data/datasets/nuscenes_dataset.py", line 2728, in __init__ self.packer_meta = self.dataset._get_meta() File "/usr/local/lib/python3.8/dist-packages/hat/data/datasets/nuscenes_dataset.py", line 2173, in _get_meta meta = {"scene_info": self.scene2len} AttributeError: 'NuscenesLidarParser' object has no attribute 'scene2len'