Validate that the folder exist when initializing the ResultExplorer on AWS

[R-Palazzo]

Environment Details

• SDGym version: 0.10.0

Error Description

Currently, when we initialize a ResultsExplorer with an invalid local folder name, we correctly get an error:

result_explorer = ResultsExplorer('Fake/')

ValueError: The provided path 'Fake/' is not a valid local directory.

However, when the path points to an AWS folder, no validation is performed, and no error is raised. For consistency, we should also validate AWS result folders and raise an error if they don’t exist.

Steps to reproduce

result_explorer = ResultsExplorer(
    's3://sdgym-benchmark/Fake/',
    aws_access_key_id=aws_access_key_id,
    aws_secret_access_key=aws_secret_access_key
)