Structured Tasks

async def one() -> int:
    await task.sleep(0.0)
    return 1

async def two() -> int:
    await task.sleep(0.0)
    return 2

async def main() -> Result[None, Error]:
    async with task.scope() as scope:
        first = scope.spawn(one())
        second = scope.spawn(two())
        values = await task.gather([first, second])
    return None

async def fast() -> int:
    await task.sleep(0.0)
    return 10

async def slow() -> int:
    await task.sleep(0.20)
    return 20

async with task.scope() as scope:
    selected: int = await task.select(
        first=scope.spawn(fast()),
        second=scope.spawn(slow()),
    )

async with task.TaskGroup() as group:
    slow = group.spawn(slow())
    failing = group.spawn(fail_fast())
    failure = await failing