No shutdown event (lifespan cleanup) when using --reload

[GuillaumeDesforges]

It seems my lifespan cleanup actions are not triggered when I§ use uvicorn with --reload, I suspect shutdown event is not called.

Rough idea:

@asynccontextmanager
async def lifespan(app: Starlette) -> AsyncGenerator[State, None]:
    print("START")
    yield None
    print("SHUTDOWN")

app = FastAPI(lifespan=lifespan)

Without --reload it prints both START and SHUTDOWN, but no if I use --reload.

[Kludex]

Are you on windows?

[GuillaumeDesforges]

Yes

[Kludex]

• Can you help to test Fix shutdown event on Windows in reloader #1584 ?