'''     gevent来完成多任务，即协程     协程相对进程和线程来说，消耗的资源更加的小，任务切换比较快 ''' import gevent from gevent import monkey import time monkey.patch_all()  # 处理延时的操作 否则出现time.sleep()的时候，gevent无法完成利用延时时间去执行别的任务 class Gevent_test(object):     def f1(self, n):         for i in range(n):             print(gevent.getcurrent(), i)             time.sleep(0.1)     def f2(self, n):         for i in range(n):             print(gevent.getcurrent(), i)             time.sleep(0.1) if __name__ == '__main__':     g = Gevent_test()     g1 = gevent.spawn(g.f1, 5)     g2 = gevent.spawn(g.f2, 5)     gevent.joinall([         gevent.spawn(g.f1, 5),         gevent.spawn(g.f2, 5)     ])