AttributeError occured when run eval_demo.py

[w2kun]

Thanks for releasing the dataset!

I try to run eval_demo.py after installation but encounter an error. The details are as follows:

Traceback (most recent call last):
  File "F:/Github-Projects/co3d-master/eval_demo.py", line 209, in <module>
    main()
  File "F:/Github-Projects/co3d-master/eval_demo.py", line 56, in main
    category, task=task, single_sequence_id=single_sequence_id
  File "F:/Github-Projects/co3d-master/eval_demo.py", line 110, in evaluate_dbir_for_category
    test_restrict_sequence_id=single_sequence_id,
  File "F:\Github-Projects\co3d-master\dataset\dataset_zoo.py", line 182, in dataset_zoo
    datasets[dataset] = Co3dDataset(**params)
  File "<string>", line 29, in __init__
  File "F:\Github-Projects\co3d-master\dataset\co3d_dataset.py", line 287, in __post_init__
    self._load_frames()
  File "F:\Github-Projects\co3d-master\dataset\co3d_dataset.py", line 531, in _load_frames
    zipfile, List[types.FrameAnnotation]
  File "F:\Github-Projects\co3d-master\dataset\types.py", line 132, in load_dataclass
    return _dataclass_from_dict(asdict, cls)
  File "F:\Github-Projects\co3d-master\dataset\types.py", line 152, in _dataclass_from_dict
    types = typing.get_args(typeannot)
AttributeError: module 'typing' has no attribute 'get_args'

I'm using python 3.6.8, pytorch 1.7.1 and pytorch3d 0.5.0. Can you provide some advices on it? Thanks in advance.

[w2kun]

I find in typing.pyi that get_args() only be defined when sys.version_info >= (3, 8). Is there an alternative of get_args() when using python < 3.8?

[bottler]

Can you install the typing_extensions library? That makes up get_args for older Pythons and might do the trick.

[w2kun]

Thanks for the advice. The get_args() in typing_extensions requires Python>=3.7, thus not suitable for Python3.6. It seems it is time to update my python or use anaconda.

[curehabit]

typing_extensions

Python 3.7.11 also meets this ...