Expose find in torchvision.prototype.datasets

[fmassa]

Fixes #4780

[facebook-github-bot]

💊 CI failures summary and remediations

As of commit 4c8995c (more details on the Dr. CI page):

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• 1/2 failures introduced in this PR
• 1/2 tentatively recognized as flaky ❄️
  • Click here to rerun these jobs

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1 failure not recognized by patterns:

Job	Step	Action
binary_linux_conda_py3.8_cu111	packaging/build_conda.sh	🔁 rerun

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1 job timed out:

• binary_linux_conda_py3.8_cu111

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❄️ 1 failure tentatively classified as flaky

but reruns have not yet been triggered to confirm:

unittest_windows_gpu_py3.8 (1/1)

Step: "Install torchvision" (full log | diagnosis details | 🔁 rerun) ❄️

torch with cuda installed but torch.cuda.is_available() is False

+ '[' -n '' ']'
+ hash -r
+ '[' 3.8 == 3.6 ']'
++ python -c 'import torch; print(torch.cuda.is_available())'
+ torch_cuda=False
+ echo torch.cuda.is_available is False
torch.cuda.is_available is False
+ '[' '!' -z 11.1 ']'
+ '[' False == False ']'
+ echo 'torch with cuda installed but torch.cuda.is_available() is False'
torch with cuda installed but torch.cuda.is_available() is False
+ exit 1


Exited with code exit status 1

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[datumbox]

LGTM, thanks

[github-actions]

Hey @fmassa!

You merged this PR, but no labels were added. The list of valid labels is available at https://github.com/pytorch/vision/blob/main/.github/process_commit.py