uvloop fails on 3.14 #637
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graingert
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Ah, this has been deprecated since Python 3.12 and will be removed in 3.14. Let's get rid of it in uvloop too.
Reacted by Miro Hrončok, Nate, Vizonex and Salimane Adjao MoustaphaWith Python 3.14.0a5 there's one more thing happening:
________________ ERROR collecting _empty/tests/test_aiohttp.py _________________ ImportError while importing test module '/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_aiohttp.py'. Hint: make sure your test modules/packages have valid Python names. Traceback: tests/test_aiohttp.py:14: in <module> from uvloop import _testbase as tb ../../BUILDROOT/usr/lib64/python3.14/site-packages/uvloop/__init__.py:6: in <module> from asyncio.events import BaseDefaultEventLoopPolicy as __BasePolicy E ImportError: cannot import name 'BaseDefaultEventLoopPolicy' from 'asyncio.events' (/usr/lib64/python3.14/asyncio/events.py)Reacted by Anton Agestam, Paulo Cheque and Salimane Adjao MoustaphaImportError: cannot import name 'BaseDefaultEventLoopPolicy' from 'asyncio.events'I reported that part as python/cpython#131148
- added 2 commits that reference this issue
on Mar 12, 2025 I attempted to do something in #658, but it doesn't work correctly.
I still get:
=================================== FAILURES =================================== ________________________ TestBaseAIO.test_set_task_name ________________________ Traceback (most recent call last): File "/usr/lib64/python3.14/unittest/case.py", line 58, in testPartExecutor yield File "/usr/lib64/python3.14/unittest/case.py", line 660, in run self._callTestMethod(testMethod) ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/usr/lib64/python3.14/unittest/case.py", line 606, in _callTestMethod result = method() File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_base.py", line 594, in test_set_task_name self.assertEqual(result, "mytask!") ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^ File "/usr/lib64/python3.14/unittest/case.py", line 916, in assertEqual assertion_func(first, second, msg=msg) ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib64/python3.14/unittest/case.py", line 909, in _baseAssertEqual raise self.failureException(msg) AssertionError: None != 'mytask!' ________________ TestUVExecutors.test_executors_process_pool_01 ________________ Traceback (most recent call last): File "/usr/lib64/python3.14/unittest/case.py", line 58, in testPartExecutor yield File "/usr/lib64/python3.14/unittest/case.py", line 660, in run self._callTestMethod(testMethod) ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/usr/lib64/python3.14/unittest/case.py", line 606, in _callTestMethod result = method() File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_executors.py", line 35, in test_executors_process_pool_01 self.run_pool_test(concurrent.futures.ProcessPoolExecutor) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_executors.py", line 29, in run_pool_test self.loop.run_until_complete(run()) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^ File "uvloop/loop.pyx", line 1518, in uvloop.loop.Loop.run_until_complete File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_executors.py", line 24, in run res = await asyncio.gather(*coros) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ concurrent.futures.process.BrokenProcessPool: A process in the process pool was terminated abruptly while the future was running or pending. _______________ TestAIOExecutors.test_executors_process_pool_01 ________________ Traceback (most recent call last): File "/usr/lib64/python3.14/unittest/case.py", line 58, in testPartExecutor yield File "/usr/lib64/python3.14/unittest/case.py", line 660, in run self._callTestMethod(testMethod) ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/usr/lib64/python3.14/unittest/case.py", line 606, in _callTestMethod result = method() File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_executors.py", line 35, in test_executors_process_pool_01 self.run_pool_test(concurrent.futures.ProcessPoolExecutor) ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_executors.py", line 29, in run_pool_test self.loop.run_until_complete(run()) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^ File "/usr/lib64/python3.14/asyncio/base_events.py", line 719, in run_until_complete return future.result() ~~~~~~~~~~~~~^^ File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_executors.py", line 24, in run res = await asyncio.gather(*coros) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ concurrent.futures.process.BrokenProcessPool: A process in the process pool was terminated abruptly while the future was running or pending. ___________________ TestIssue39Regr.test_issue39_regression ____________________ Traceback (most recent call last): File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_regr1.py", line 114, in test_issue39_regression self.run_test() ~~~~~~~~~~~~~^^ File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_regr1.py", line 93, in run_test addr = qout.get() File "/usr/lib64/python3.14/multiprocessing/queues.py", line 101, in get res = self._recv_bytes() File "/usr/lib64/python3.14/multiprocessing/connection.py", line 222, in recv_bytes buf = self._recv_bytes(maxlength) File "/usr/lib64/python3.14/multiprocessing/connection.py", line 437, in _recv_bytes buf = self._recv(4) File "/usr/lib64/python3.14/multiprocessing/connection.py", line 402, in _recv chunk = read(handle, to_read) File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_regr1.py", line 74, in on_alarm raise FailedTestError tests.test_regr1.FailedTestError During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib64/python3.14/unittest/case.py", line 58, in testPartExecutor yield File "/usr/lib64/python3.14/unittest/case.py", line 660, in run self._callTestMethod(testMethod) ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^ File "/usr/lib64/python3.14/unittest/case.py", line 606, in _callTestMethod result = method() File "/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_regr1.py", line 116, in test_issue39_regression self.fail('deadlocked in libuv') ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib64/python3.14/unittest/case.py", line 741, in fail raise self.failureException(msg) AssertionError: deadlocked in libuvReacted by skupr-anaconda@hroncok I have been looking at your work rather closely since I am the maintainer of the windows branch since I am trying to get caught up with some of these changes being made here and I was wondering if maybe migrating to using
AbstractEventLoopwould be a good solution and then making some form a deprecation warning that discourages the usage of event-loop-policies.Any update on this? Now that 3.14 is out it would be nice to get things working.
Reacted by Jacek Hiszpanski, Mando, Stein Magnus Jodal, Javier Maestro, Adam Hamilton, Pieter, Victor Gram Thomsen, Ahmed Ilyas, Krzysztof Jagiello, Paul Sanders and 11 more+1 also blocked on the upgrade because of this
Hi, thanks so much for the fix, however on pypi there is still no 0.22.0 release (as well github releases).
Reacted by Salimane Adjao Moustapha- added 2 commits that reference this issue
on Oct 14, 2025 - added 4 commits that reference this issue
on Oct 15, 2025
