python 多线程

Python代码 

# -*- coding: utf-8 -*-
import threading
import time

mainThread = threading.currentThread()#获得当前正在运行的线程的引用

mylock = threading.RLock()
class mythread(threading.Thread):
    name = None

    def __init__(this,threadname):
        threading.Thread.__init__(this);
        this.name = threadname
        pass

    def run(this):
        #mylock.acquire()#获取锁
        #do something
        while(True):
            print this.name
            time.sleep(3)
        #do something
        #mylock.release()#释放锁

mythread1 = mythread('mythread1')
mythread1.setDaemon(True)#设为守护线程
mythread1.start()#线程启动

time.sleep(2)

mythread2 = mythread('mythread2')
mythread2.start()#线程启动

threadflag = mythread1.isAlive()#是否runnable
print 'threadflag:',threadflag

threadlist = threading.enumerate()#当前所有活动对象
threadcount = threading.activeCount()#当前所有活动对象的长度
print 'thread activeCount:',threadcount

import Queue

#threading.RLock() 为锁 同步机制
#threading.Condition() 为条件变量 同步机制
#Queue 为队列的同步实现