torchvision 0.16 is not compatible with PT 1.13.1

[ningziwen]

🐛 Describe the bug

Sample code

from torchvision.datasets import mnist

Error:

    from torchvision.datasets import mnist
  File "/usr/local/lib/python3.10/site-packages/torchvision/__init__.py", line 6, in <module>
    from torchvision import _meta_registrations, datasets, io, models, ops, transforms, utils
  File "/usr/local/lib/python3.10/site-packages/torchvision/models/__init__.py", line 2, in <module>
    from .convnext import *
  File "/usr/local/lib/python3.10/site-packages/torchvision/models/convnext.py", line 8, in <module>
    from ..ops.misc import Conv2dNormActivation, Permute
  File "/usr/local/lib/python3.10/site-packages/torchvision/ops/__init__.py", line 23, in <module>
    from .poolers import MultiScaleRoIAlign
  File "/usr/local/lib/python3.10/site-packages/torchvision/ops/poolers.py", line 10, in <module>
    from .roi_align import roi_align
  File "/usr/local/lib/python3.10/site-packages/torchvision/ops/roi_align.py", line 4, in <module>
    import torch._dynamo
ModuleNotFoundError: No module named 'torch._dynamo'

This change which was released in 0.16 used _dynamo. _dynamo is part of the change which only released from PT 2.0.

Versions

torchvision=0.16
torch=1.13.1

[NicolasHug]

Thanks for the report @ningziwen . That is expected, from our dependency table, you will either want to install pytorch 2.1 to use torchvision 0.16, or install torchvision 0.14 to install pytorch 1.13.

https://github.com/pytorch/vision#installation