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Title: gh-154570: Fix itertools.accumulate() silently corrupting its total on reentrancy by PhysicistJohn · Pull Request #154571 · python/cpython · GitHub

Open Graph Title: gh-154570: Fix itertools.accumulate() silently corrupting its total on reentrancy by PhysicistJohn · Pull Request #154571 · python/cpython

X Title: gh-154570: Fix itertools.accumulate() silently corrupting its total on reentrancy by PhysicistJohn · Pull Request #154571 · python/cpython

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Open Graph Description: A source iterable or func= callable that calls back into next() on the same accumulate object mid-step silently corrupted the running total instead of erroring. Fixes gh-154570. Adds a running guar...

X Description: A source iterable or func= callable that calls back into next() on the same accumulate object mid-step silently corrupted the running total instead of erroring. Fixes gh-154570. Adds a running guar...

Opengraph URL: https://github.com/python/cpython/pull/154571

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