`find` is not exposed in `torchvision.prototype.datasets`

[fmassa]

Pretty easy to do, we should expose find in

vision/torchvision/prototype/datasets/__init__.py

Line 14 in c786d12

from ._api import register, _list as list, info, load # usort: skip

cc @pmeier @bjuncek

[pmeier]

What is the use case? It was a conscious decision to not expose it, since the user can't do much with a "raw" dataset object.

[fmassa]

@pmeier Use case is obtaining the categories of a dataset, or the info / resources from a dataset. I've constantly found myself wanting to query those informations, but having to go to a private method

[pmeier]

Well there is datasets.info() for that.

[datumbox]

Hmm... So is the following comment correct? Is it the preferred way to fetch this info?

vision/torchvision/prototype/models/_meta.py

Line 6 in 9528d96

# This will eventually be replaced with a call at torchvision.datasets.find("imagenet").info.categories

[pmeier]

I would say no and would prefer datasets.info("imagenet").categories. This is intentionally exposed to get this information without havijg to touch the raw dataset object.