from gevent import monkey;monkey.patch_all()import timeimport geventdef eat():    print("eating start")    time.sleep(2)    print("eating end")def play():    print("playing start")    gevent.sleep(1)    print("playing end")g1 = gevent.spawn(eat)g2 = gevent.spawn(play)g1.join()g2.join()输出结果：eating startplaying startplaying endeating end

 协程：能够在一个线程中实现并发的效果，能够规避一些任务中的IO操作，在任务中的执行过程中，检测到IO就切换到其他任务