Failing to import on Python >= 3.14

[cretz]

In python/cpython#128216, asyncio.events.BaseDefaultEventLoopPolicy was renamed to asyncio.events._BaseDefaultEventLoopPolicy, so when using 3.14 and import trio_asyncio, you get:

.venv/lib/python3.14/site-packages/trio_asyncio/__init__.py:19: in <module>
    from ._loop import (
.venv/lib/python3.14/site-packages/trio_asyncio/_loop.py:122: in <module>
    class _TrioPolicy(asyncio.events.BaseDefaultEventLoopPolicy):
E   AttributeError: module 'asyncio.events' has no attribute 'BaseDefaultEventLoopPolicy'

I understand the README clarifies this library has only been tested through 3.13, but figured I'd open an issue for tracking and for others that may see the same thing.

[mstarodub]

also:

trio_asyncio/_loop.py", line 366, in <module>
    asyncio.AbstractChildWatcher if sys.platform != "win32" else object
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  ...
AttributeError: module 'asyncio' has no attribute 'AbstractChildWatcher'

see #152

[seowalex]

@oremanj sorry for tagging you directly, but is this something that will be fixed? If you lack the bandwidth, would you accept a PR for a fix?

[oremanj]

Thanks for the ping. I'm happy to review a PR. I'm not sure when I'll have time to investigate separately but will try to take a look this week.

[seowalex]

Great, thank you! I will try to investigate as well but you will likely be more familiar so I may actually take longer 🙂.