Improve error message for invalid data_files pattern format - #8060
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lhoestq merged 2 commits intoMar 11, 2026
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This PR improves the error message raised in sanitize_patterns()
when an invalid data_files entry is provided.
The new message clearly explains the expected dictionary format:
{'split': <split_name>, 'path': <path_or_list_of_paths>}
This helps users debug incorrect dataset configurations more easily.