standard queue&threading

#!/usr/bin/python
# -*- coding: UTF-8 -*-

import queue as Queue
import threading
import time

exitFlag = 0

class myThread (threading.Thread):
    def __init__(self, threadID, name, q):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
        self.q = q
    def run(self):
        print("Starting " + self.name)
        process_data(self.name, self.q)
        print("Exiting " + self.name)

def process_data(threadName, q):
    while not exitFlag:
        queueLock.acquire()
        if not workQueue.empty():
            data = q.get()
            queueLock.release()
            print("%s processing %s" % (threadName, data))
        else:
            queueLock.release()
        time.sleep(1)

threadList = ["Thread-1", "Thread-2", "Thread-3"]
nameList = ["One", "Two", "Three", "Four", "Five"]
queueLock = threading.Lock()
workQueue = Queue.Queue(10)
threads = []
threadID = 1

def main():
    global threadList,nameList,queueLock,workQueue,threads,threadID
    # 创建新线程
    for tName in threadList:
        thread = myThread(threadID, tName, workQueue)
        thread.start()
        threads.append(thread)
        threadID += 1

    # 填充队列
    queueLock.acquire()
    for word in nameList:
        workQueue.put(word)
    queueLock.release()

    # 等待队列清空
    while not workQueue.empty():
        pass

    # 通知线程是时候退出
    exitFlag = 1

    # 等待所有线程完成
    for t in threads:
        t.join()
    print("Exiting Main Thread")

if __name__ == '__main__':
    main()