Added missing typing annotations to transforms/functional_tensor

[frgfm]

Following up on #2025, this PR adds missing typing annotations in transforms/functional_tensor.py. I checked locally by editing the mypy.ini and everything looks good 👍

Any feedback is welcome!

[oke-aditya]

Oh! I too had a shot at this have a look at #4235.
Let's go ahead with either 😄

[frgfm]

Oh! I too had a shot at this have a look at #4235.
Let's go ahead with either

Oh shoot, my bad, I thought I had checked that you hadn't taken care of this one 🙃

[frgfm]

@fmassa I checked locally by removing the mypy ignore from mypy.ini and all tests passed, so I think this is good to go for review :)

[NicolasHug]

I checked locally by removing the mypy ignore from mypy.ini and all tests passed,

Thanks @frgfm , could you please remove it in this PR as well, so that we can rely on the CI to check the file?

[frgfm]

I checked locally by removing the mypy ignore from mypy.ini and all tests passed,

Thanks @frgfm , could you please remove it in this PR as well, so that we can rely on the CI to check the file?

I would have done it, but there are other files handled by other PRs in transforms. Do you prefer me to remove the ignore and add several for all the other files?

[NicolasHug]

Yes, we should remove the global ignore of torchvision.transforms.* and manually add the rest of the files which I believe are

_functional_video.py, _transforms_video.py, autoaugment.py, functional.py, functional_pil.py, transforms.py

[frgfm]

I just added other files that were throwing typing errors 👌

[fmassa]

LGTM, thanks!

[frgfm]

Ready to be merged @fmassa :)

[github-actions]

Hey @datumbox!

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