multiPL-e dataset contains hilarious regex errors, generating 'rsthon' tasks

code_star · x · 2026-08-17

Developer codestar highlights a glaring preprocessing error in the multiPL-e dataset's MBPP subset. The dataset attempted to convert Python to Rust code via a simple regex replace (swapping .py for .rs), resulting in absurd instructions to write a 'rsthon' function. Such rudimentary flaws, lingering in benchmark datasets, may have skewed evaluation results for numerous research papers relying on this data.

Related event: Long-Standing Bug in multiPL-e Dataset Turns Python Instructions into 'Rsthon'(2 posts)→

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