gh-94808: Add coverage for bytesarray_setitem by mdboom · Pull Request #95802 · python/cpython (original) (raw)
When both are provided, tp_ass_subscript takes precedence over tp_ass_item. Since bytesarray provides both, the existing test_setitem tests for bytesarray were not testing bytesarray_setitem, but bytesarray_ass_subscript. This is mostly fine, since Python code has to jump through some hoops to even call it, but a third-party library using PySequence_SetItem could potentially run into this uncovered case.