In an unrelated PR to add a new argument to the base Executor class for concurrent.futures, there was a test_asyncio failure in test_sendfile for the ProactorEventLoop tests:
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FAIL: test_sendfile_close_peer_in_the_middle_of_receiving (test.test_asyncio.test_sendfile.ProactorEventLoopTests)
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Traceback (most recent call last):
File "D:\a\cpython\cpython\lib\test\test_asyncio\test_sendfile.py", line 452, in test_sendfile_close_peer_in_the_middle_of_receiving
self.run_loop(
AssertionError: ConnectionError not raised
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https://github.com/python/cpython/pull/22023/checks?check_run_id=1049760805#step:5:2373