task.cancel

• 取消任务

  task.cancel()

• 示例:

from usr import uasyncio as asyncio
async def bar(n):
    print('Start cancellable bar()')
    while True:
        await asyncio.sleep(1)
        n += 1
    return n
async def do_cancel(task):
    await asyncio.sleep(5)
    print('About to cancel bar')
    # 取消任务
    task.cancel()
def main():
    task = asyncio.wait_for(bar(10), 7)
    asyncio.create_task(do_cancel(task))
    asyncio.sleep(1)
asyncio.run(main())