[Python]多线程--threading模块实现

#!/usr/bin/env python#coding=utf-8#来源： python核心编程 多线程章节import threadingfrom time import ctime,sleep,time '''使用建立实例的方法使用threading的多线程方法，建立2个线程，熟悉线程的基本操作''''''#创建一个thread实例，传给他一个函数secds=[4,2] #每个线程停顿的时间def loop(nloop,secds):    print 'the loop',nloop,'started',ctime()    sleep(secds)    print 'the loop',nloop,'stoped',ctime()    #maindef main():    print 'mian thread started ',ctime()    threads=[]    nloops=range(len(secds))    #创建所有线程的实例    for i in nloops:        threadins=threading.Thread(target=loop,args=(i,secds[i])) #这里的target等参数不能省略        threads.append(threadins)    #依次启动所有子线程       for i in nloops:        threads[i].start()    #等待所有线程结束    for i in nloops:        threads[i].join()    print 'all threads done ',ctime()    if __name__=='__main__':    main()'''#创建一个Thread，传给他一个可调用类的对象，这次是把方法变成对象传入，很少见到这么用，测试有点问题#程序是能跑了 但是这个d到底是什么还是没搞明白'''secds=[1,5]#子线程对应的类class ThreadFun(object):    def __init__(self,args):        self.args = args        def __call__(self):          #自动调用        apply(self.loop,self.args)        def loop(d,nloop,nsec):   #这种调用方法 这里会多加一个参数        #print dir(d)        #print tpye(d)   #tpye not defined  !!        print '\-'*20        print 'loop',nloop,'start',ctime()        sleep(nsec)        print 'loop',nloop,'stop',ctime()        def main():    print 'start :',ctime()    threads=[]    nloops = range(len(secds))            for i in nloops:        t=threading.Thread(target=ThreadFun((i,secds[i])))        threads.append(t)                for i in nloops:        threads[i].start() #start all threads                for i in nloops:        threads[i].join() #wait for all threads done                 print 'all thread done' ,ctime()             if __name__=='__main__':    main()'''#下面是我们最常用的一个方法，就是继承类实现多线程#这个是引用tutorialspoint的代码exitFlag = 0class myThread (threading.Thread):   #继承threading.Thread     def __init__(self, threadID, name, counter):        threading.Thread.__init__(self)        self.threadID = threadID        self.name = name        self.counter = counter    def run(self):        print "Starting " + self.name        print_time(self.name, self.counter, 6)  #循环6次，每次执行了得线程都要打印一次         print "Exiting " + self.namedef print_time(threadName, delay, counter):    while counter:        if exitFlag:            thread.exit()        sleep(delay)        print "%s: %s" % (threadName, ctime(time()))        counter -= 1# Create new threadsthread1 = myThread(1, "Thread-1", 1)thread2 = myThread(2, "Thread-2", 2)# Start new Threadsthread1.start()thread2.start()print "Exiting Main Thread"      #还有一个常用的模块就是Queue