Remove global util.main_event_loop

[gnzsnz]

from discussion #62 on ib_async

pull request #1 created

[gnzsnz]

deprecation warning on test results

======================= warnings summary =========================
tests/create_test.py:9
  /Users/gonzo/Documents/dev/eventkit/tests/create_test.py:9: DeprecationWarning: There is no current event loop
    loop = asyncio.get_event_loop_policy().get_event_loop()

proposed solution

try:
  loop = asyncio.get_running_loop()
except RuntimeError:
  loop = asyncio.new_event_loop()
  asyncio.set_event_loop(loop)

proposed solution to be applied to util.get_event_loopand tests/create_test.py

reference -> https://docs.python.org/3/library/asyncio-policy.html#asyncio.DefaultEventLoopPolicy

[mattsta]

another good catch there.

I tried it in a couple places, and found even after that is fixed in the 3 tests using .get_event_loop(), then the underlying util.get_event_loop() starts failing again... but that got fixed by just adding this fix there too and also caching the first creation result and never creating another one.

After those updates, the tests work on 3.10 and 3.12 for me locally.

I'm adding/updating a next branch with those changes (and some other minor things). I'll add a PR against it, so see if those look right and we can merge more updates into a new version.