The smolagents sandbox broke 'a, *b = list', one of Python's most common lines

This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry.

Fourth entry, and the fuzzer that found entry 3 is still paying out. Same failure family, different corner of the language: valid Python the sandbox refuses to run, with an error that lies about why.

The one-liner every developer writes

best, *rest = scores

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