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wds-dataset-viewer-test

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Is there any support for viewing webdatasets in Dataset Viewer?
My webdataset schema is very simple; it's just an image:

Example = TypedDict('Example', {
  '__key__': str,
  'img.png': bytes,
})

I wrote a dataset script, which seems to work, but it looks like it's not supported as a Dataset Viewer idiom:

Error code:   ConfigNamesError
Exception:    DatasetWithScriptNotSupportedError
Message:      The dataset viewer doesn't support this dataset because it runs arbitrary python code.

But WDS is pretty ubiquitous, and this is probably the simplest case possible. So maybe there's a convention for viewing these? I wasn't able to find anything like that though.

cc @albertvillanova @lhoestq @severo .