asyncio internals throw RuntimeError: Event loop is closed on script exit

[arhadthedev]

Actual behavior

>>> import asyncio
>>> import aiohttp
>>>
>>> async def main():
...     async with aiohttp.ClientSession() as session:
...         async with session.get('https://example.com/'):
...             pass
...
>>> asyncio.run(main())
>>> exit()
Exception ignored in: <function _ProactorBasePipeTransport.__del__ at 0x0000017BF133F760>
Traceback (most recent call last):
  File "C:\Program Files\Python310\lib\asyncio\proactor_events.py", line 116, in __del__
    self.close()
  File "C:\Program Files\Python310\lib\asyncio\proactor_events.py", line 108, in close
    self._loop.call_soon(self._call_connection_lost, None)
  File "C:\Program Files\Python310\lib\asyncio\base_events.py", line 750, in call_soon
    self._check_closed()
  File "C:\Program Files\Python310\lib\asyncio\base_events.py", line 515, in _check_closed
    raise RuntimeError('Event loop is closed')
RuntimeError: Event loop is closed

This issue was reported in aio-libs/aiohttp#4324 so the reproducer is copied from there.

Expected behavior

Normal exit without termination. There is no user-created loop to be closed manually.

Your environment

• CPython versions tested on: 3.10.4
• Operating system and architecture: Windows 10

[hauntsaninja]

Thanks, seems like we can close this one out

[hauntsaninja]

Oh never mind, the 3.10 backport hasn't been merged

[arhadthedev]

The issue is fully fixed:

• gh-92841: Fix asyncio's RuntimeError: Event loop is closed #92842
• [3.11] gh-92841: Fix asyncio's RuntimeError: Event loop is closed (GH-92842) #92905
• [3.10] gh-92841: Fix asyncio's RuntimeError: Event loop is closed (GH-92842) #92904