AnyIO related exception issue

[HK-Mattew]

Things to check first

• [X] I have checked that my issue does not already have a solution in the FAQ

• [X] I have searched the existing issues and didn't find my bug already reported there

• [X] I have checked that my bug is still present in the latest release

Version

4.0.0a5

What happened?

The problem seems to be more related to AnyIO. However, I'm not using AnyIO directly so I opened this issue here.

Exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "/home/username/.cache/pypoetry/virtualenvs/projectx-3coxCssU-py3.10/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 810, in task_done
    self._exceptions.append(exc)
AttributeError: 'TaskGroup' object has no attribute '_exceptions'

--- Logging error in Loguru Handler #1 ---
Record was: {'elapsed': datetime.timedelta(seconds=12797, microseconds=790013), 'exception': (type=<class 'RecursionError'>, value=RecursionError('maximum recursion depth exceeded in comparison'), traceback=<traceback object at 0x7f68a7692c80>), 'extra': {}, 'file': (name='base_events.py', path='/usr/local/lib/python3.10/asyncio/base_events.py'), 'function': 'call_exception_handler', 'level': (name='ERROR', no=40, icon='❌'), 'line': 1762, 'message': 'Exception in default exception handler', 'module': 'base_events', 'name': 'asyncio.base_events', 'process': (id=6499, name='MainProcess'), 'thread': (id=140087471896320, name='Thread-2 (run_blocking_portal)'), 'time': datetime(2024, 11, 13, 19, 31, 21, 260738, tzinfo=datetime.timezone(datetime.timedelta(0), 'UTC'))}
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "/home/username/.cache/pypoetry/virtualenvs/projectx-3coxCssU-py3.10/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 810, in task_done
    self._exceptions.append(exc)
AttributeError: 'TaskGroup' object has no attribute '_exceptions'

[APSCHEDULER] ERROR - Job 8c6ed35c-bb78-4501-95f3-4f53326ab3af raised an exception - Traceback (most recent call last):

  File "/usr/local/lib/python3.10/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "/home/username/.cache/pypoetry/virtualenvs/projectx-3coxCssU-py3.10/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 810, in task_done
    self._exceptions.append(exc)
AttributeError: 'TaskGroup' object has no attribute '_exceptions'

How can we reproduce the bug?

I don't know exactly.

[agronholm]

Which version of AnyIO is this on?

[HK-Mattew]

Which version of AnyIO is this on?

anyio==4.6.2.post1

[agronholm]

Now I'd just need a clue on how to reproduce this so I can fix the problem.