bpo-35409: Ignore GeneratorExit in async_gen_athrow_throw (GH-14755)

Ignore `GeneratorExit` exceptions when throwing an exception into the `aclose` coroutine of an asynchronous generator.





https://bugs.python.org/issue35409

1 files changed, 27 insertions, 0 deletions

diff --git a/Lib/test/test_asyncgen.py b/Lib/test/test_asyncgen.py
index 23eb6a4..58d8aee 100644
--- a/Lib/test/test_asyncgen.py
+++ b/Lib/test/test_asyncgen.py
@@ -735,6 +735,33 @@ class AsyncGenAsyncioTest(unittest.TestCase):
         self.loop.run_until_complete(run())
         self.assertEqual(DONE, 10)
 
+    def test_async_gen_asyncio_aclose_12(self):
+        DONE = 0
+
+        async def target():
+            await asyncio.sleep(0.01)
+            1 / 0
+
+        async def foo():
+            nonlocal DONE
+            task = asyncio.create_task(target())
+            try:
+                yield 1
+            finally:
+                try:
+                    await task
+                except ZeroDivisionError:
+                    DONE = 1
+
+        async def run():
+            gen = foo()
+            it = gen.__aiter__()
+            await it.__anext__()
+            await gen.aclose()
+
+        self.loop.run_until_complete(run())
+        self.assertEqual(DONE, 1)
+
     def test_async_gen_asyncio_asend_01(self):
         DONE = 0