mypy errors with AsyncioExecutor(loop=asyncio.get_event_loop())

[blazewicz]

With current version of mypy any project using AsyncioExecutor with loop= argument provided as follows:

executor = AsyncioExecutor(loop=asyncio.get_event_loop())

fails type check with following error

***: error: Argument "loop" to "AsyncioExecutor" has incompatible type "AbstractEventLoop"; expected "Optional[_UnixSelectorEventLoop]"

Basically asyncio.get_event_loop() returns asyncio.AbstractEventLoop object, and AsyncioExecutor expects asyncio._UnixSelectorEventLoop.

type definition:

graphql-core-legacy/graphql/execution/executors/asyncio.py

Line 54 in 26b0fc0

# type: (Optional[_UnixSelectorEventLoop]) -> None