Python3-gevent模塊-單線程下的"併發"-協程

博客轉載

　　http://www.cnblogs.com/alex3714/articles/5248247.html

　　http://www.cnblogs.com/tkqasn/p/5705338.html

代碼示例

import greenlet


def func1():
    print(1)
    gr2.switch()
    print(1)
    gr2.switch()


def func2():
    print(2)
    gr3.switch()
    print(2)
    gr3.switch()


def func3():
    print(3)
    gr1.switch()
    print(3)
    gr1.switch()

# greenlet能夠實現函數間的任意中斷切換執行
gr1 = greenlet.greenlet(func1)
gr2 = greenlet.greenlet(func2)
gr3 = greenlet.greenlet(func3)
gr1.switch()

greenlet

---

import gevent


def func1():
    print(1)
    gevent.sleep()
    print(1)


def func2():
    print(2)
    gevent.sleep(1)
    print(2)


def func3():
    print(3)
    gevent.sleep()
    print(3)


# gevent封裝了greenlet,能夠經過sleep()交出控制權,實現協程
gevent.joinall([
    gevent.spawn(func1),
    gevent.spawn(func2),
    gevent.spawn(func3)
])

gevent