FA-4850 / Call argument binding / Member archive

Positional only binding: Changes the omitted second-argument default · case 05

Changes the omitted second-argument default and changes the required Python-language result.

Member previewVariant 5 · 3 implementations · 6 checks per implementation

Case scope

Changes the omitted second-argument default and changes the required Python-language result.

Why this case matters

Runs Python standard-library language operations in a deterministic local reproducer. Literal expected answers are authored independently. Related defects share an evaluation group to avoid benchmark split leakage.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
omitted optional	`[1, null]`	`[1, 10]`	Failed

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