python-gevent模块（自动切换io的协程）

 

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import gevent
 
 
def foo():
 
    print("Running in foo")
    gevent.sleep(2)
    print("Explicit context switch to foo again")
 
 
def bar():
    print("Explicit context to bar")
    gevent.sleep(1 )
    print("Implicit context switch back to bar")
 
def func3():
    print("running func3")
    gevent.sleep(0)#遇到io就切换，sleep最长2秒，所以整个程序花费两秒，如果是串行需要花费3秒
    print("running func3 again")
 
gevent.joinall([
 
    gevent.spawn(foo),#启动一个协程
    gevent.spawn(bar),
    gevent.spawn(func3)
]
 
)

 

posted @ 2018-07-09 09:05  嚒~☆大白  阅读(141)  评论(0)    收藏  举报