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[3.13] gh-131670: Fix crash in anext() when __anext__ is sync and raises (GH-131682) (#131686)

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gh-131670: Fix crash in `anext()` when `__anext__` is sync and raises (GH-131682)
(cherry picked from commit 929afd1d6e)

Co-authored-by: sobolevn <mail@sobolevn.me>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
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Miss Islington (bot) 2025-03-24 20:27:01 +01:00 • committed by GitHub
parent 9f36dff788
commit 3492098418
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20
Lib/test/test_asyncgen.py
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@ -1169,6 +1169,26 @@ class AsyncGenAsyncioTest(unittest.TestCase):
self.loop.run_until_complete(run())
def test_sync_anext_raises_exception(self):
# See: https://github.com/python/cpython/issues/131670
msg = 'custom'
for exc_type in [
StopAsyncIteration,
StopIteration,
ValueError,
Exception,
]:
exc = exc_type(msg)
with self.subTest(exc=exc):
class A:
def __anext__(self):
raise exc
with self.assertRaisesRegex(exc_type, msg):
anext(A())
with self.assertRaisesRegex(exc_type, msg):
anext(A(), 1)
def test_async_gen_asyncio_anext_stopiteration(self):
async def foo():
try: