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rustedpy
Using async decorator uses type hints incompatable with with `asyncio.run` or `asyncio.create_task`
It would be nice to be able to use this with asyncio methods like run and create_task without needing to resort to escape hatches like typing.cast or #type: ignore. I'm not sure that is just having a result.as_coroutine_result or there's a better way.
An example case is the following:
from result import as_async_result
import random
import asyncio
@as_async_result(Exception)
async def example() -> str:
if random.random() < 0.5:
raise RuntimeError("Boom")
return "made it"
task: str = asyncio.run( example() )
print(task)
Running mypy on that will produce the following error:
error: Argument 1 to "run" has incompatible type "Awaitable[Ok[str] | Err[Exception]]"; expected "Coroutine[Any, Any, Never]"
This function
async def awaiting(awaitable: Awaitable[T]) -> T:
return await awaitable
can do the trick to wrap awaitables into coroutines; alas, there is an additional await added.
What would be the reason for using Awaitable instead of Coroutine then? From what I can understand, Coroutines are defined using the async def, which I assume is the use-case for the async_as_result?
Awaitable is just a less specific type used for Coroutine, Future and Task.
I tried to locally change from Awaitable to Coroutine in the result-package in my use-case and mypy was happy.
