inspect functions can't fetch dataset script from the Hub

[stevhliu]

The inspect_dataset and inspect_metric functions are unable to retrieve a dataset or metric script from the Hub and store it locally at the specified local_path:

>>> from datasets import inspect_dataset
>>> inspect_dataset('rotten_tomatoes', local_path='path/to/my/local/folder')

FileNotFoundError: Couldn't find a dataset script at /content/rotten_tomatoes/rotten_tomatoes.py or any data file in the same directory.

[mariosasko]

Hi, thanks for reporting! git bisect points to #2986 as the PR that introduced the bug. Since then, there have been some additional changes to the loading logic, and in the current state, force_local_path (set via local_path) forbids pulling a script from the internet instead of downloading it:

datasets/src/datasets/inspect.py

Lines 89 to 91 in cfae054

	dataset_module = dataset_module_factory(
	path, download_config=download_config, force_local_path=local_path, **download_kwargs
	)

cc @lhoestq: force_local_path is only used in inspect_dataset and inspect_metric. Is it OK if we revert the behavior to match the old one?

[lhoestq]

Good catch ! Yea I think it's fine :)