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gh-158304: Avoid creating StopIteration for every value yielded by an async generator #158315

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Merged
kumaraditya303 merged 8 commits into from
Oct 22, 2026
Merged

gh-158304: Avoid creating StopIteration for every value yielded by an async generator #158315

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fd30538
perf(genobject): return asend() yield values without StopIteration
ashm-dev Sep 28, 2026
da80ed2
perf(genobject): skip asend() finalizer after it was awaited
ashm-dev Sep 28, 2026
13f2615
docs(news): add entry for async generator speedup
ashm-dev Sep 28, 2026
83e7675
Merge branch 'main' into gh-158304
ashm-dev Sep 28, 2026
c8fb674
docs(news): add benchmark speedup to async generator entry
ashm-dev Sep 28, 2026
ac03ae1
docs(genobject): drop async_gen_unwrap_value() mention from comment
ashm-dev Sep 28, 2026
1224561
docs(genobject): note dealloc dependency in asend finalizer
ashm-dev Sep 28, 2026
09cec97
Merge branch 'main' into gh-158304
ashm-dev Oct 21, 2026
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docs(genobject): note dealloc dependency in asend finalizer
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@ashm-dev
ashm-dev committed Sep 28, 2026
commit 12245614ed83cb01f5a0a94bc6f71dd2ea53a442
1 change: 1 addition & 0 deletions Objects/genobject.c
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Expand Up @@ -2186,6 +2186,7 @@ static void
async_gen_asend_finalize(PyObject *self)
{
PyAsyncGenASend *ags = _PyAsyncGenASend_CAST(self);
// async_gen_asend_dealloc() calls this only in the INIT state.
if (ags->ags_state == AWAITABLE_STATE_INIT) {
_PyErr_WarnUnawaitedAgenMethod(ags->ags_gen, &_Py_ID(asend));
}
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