TypeError AnnealedValue = list[float]

[RuihanGao]

Description

Running python main.py --0 gives an error with TypeError.

  File "main.py", line 9, in <module>
    from nerf.provider_image import NeRFDataset as ImageOnlyNeRFDataset
  File "/data/ruihan/projects/realfusion/nerf/provider_image.py", line 13, in <module>
    from .options import Options
  File "/data/ruihan/projects/realfusion/nerf/options.py", line 13, in <module>
    AnnealedValue = list[float]
TypeError: 'type' object is not subscriptable```

### Steps to Reproduce

python main.py --0

### Expected Behavior

Run the code. 

### Environment

Ubuntu 20.04, cudatoolkit 11.3.1, pytorch 1.11.0, transformers 4.28.1, diffusers 0.15.1