From 4f5774f648eafd1a7076ecf9af9629fb81baa363 Mon Sep 17 00:00:00 2001 From: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com> Date: Fri, 17 Mar 2023 06:58:43 +0530 Subject: [PATCH] GH-78530: add support for generators in `asyncio.wait` (#102761) --- Doc/library/asyncio-task.rst | 4 ++++ Doc/whatsnew/3.12.rst | 3 +++ Lib/test/test_asyncio/test_tasks.py | 16 ++++++++++++++++ ...2023-03-16-16-43-04.gh-issue-78530.Lr8eq_.rst | 1 + 4 files changed, 24 insertions(+) create mode 100644 Misc/NEWS.d/next/Library/2023-03-16-16-43-04.gh-issue-78530.Lr8eq_.rst diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst index 5f1449e1b599ef..a0900cd25a7731 100644 --- a/Doc/library/asyncio-task.rst +++ b/Doc/library/asyncio-task.rst @@ -804,6 +804,10 @@ Waiting Primitives .. versionchanged:: 3.11 Passing coroutine objects to ``wait()`` directly is forbidden. + .. versionchanged:: 3.12 + Added support for generators yielding tasks. + + .. function:: as_completed(aws, *, timeout=None) Run :ref:`awaitable objects ` in the *aws* diff --git a/Doc/whatsnew/3.12.rst b/Doc/whatsnew/3.12.rst index a398cd93f73120..b55b9619fac226 100644 --- a/Doc/whatsnew/3.12.rst +++ b/Doc/whatsnew/3.12.rst @@ -241,6 +241,9 @@ asyncio :mod:`asyncio` does not support legacy generator-based coroutines. (Contributed by Kumar Aditya in :gh:`102748`.) +* :func:`asyncio.wait` now accepts generators yielding tasks. + (Contributed by Kumar Aditya in :gh:`78530`.) + inspect ------- diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py index 5b935b526541a1..731fa0c5a60b9b 100644 --- a/Lib/test/test_asyncio/test_tasks.py +++ b/Lib/test/test_asyncio/test_tasks.py @@ -1373,6 +1373,22 @@ async def foo(): self.assertEqual(res, 42) self.assertAlmostEqual(0.15, loop.time()) + + def test_wait_generator(self): + async def func(a): + return a + + loop = self.new_test_loop() + + async def main(): + tasks = (self.new_task(loop, func(i)) for i in range(10)) + done, pending = await asyncio.wait(tasks, return_when=asyncio.ALL_COMPLETED) + self.assertEqual(len(done), 10) + self.assertEqual(len(pending), 0) + + loop.run_until_complete(main()) + + def test_as_completed(self): def gen(): diff --git a/Misc/NEWS.d/next/Library/2023-03-16-16-43-04.gh-issue-78530.Lr8eq_.rst b/Misc/NEWS.d/next/Library/2023-03-16-16-43-04.gh-issue-78530.Lr8eq_.rst new file mode 100644 index 00000000000000..bdb46d08c5c4af --- /dev/null +++ b/Misc/NEWS.d/next/Library/2023-03-16-16-43-04.gh-issue-78530.Lr8eq_.rst @@ -0,0 +1 @@ +:func:`asyncio.wait` now accepts generators yielding tasks. Patch by Kumar Aditya.