#! /usr/bin/env python#coding=utf-8import threadingimport time'''#1、不加鎖num = 0class MyThread(threading.Thread):  def run(self):    global num    time.sleep(1) #一定要sleep！！！    num = num + 1    msg = self.name + ' num is ---- ' + str(num)    print msgdef test():  for i in range(10):    s = MyThread() #實(shí)例化一個(gè)Thread對(duì)象，每個(gè)Thread對(duì)象代表著一個(gè)線(xiàn)程    s.start() #通過(guò)start()方法，開(kāi)始線(xiàn)程活動(dòng)'''#'''class MyThread(threading.Thread):  def run(self):    for i in range(3):      time.sleep(1)      msg = self.name+' @ '+str(i)      print msgdef test():  for i in range(5):    t = MyThread()    t.start()#''''''#2、加鎖num = 0 #多個(gè)線(xiàn)程共享操作的數(shù)據(jù)mu = threading.Lock() #創(chuàng)建一個(gè)鎖class MyThread(threading.Thread):  def run(self):    global num    time.sleep(1)    if mu.acquire(True): #獲取鎖狀態(tài)，一個(gè)線(xiàn)程有鎖時(shí)，別的線(xiàn)程只能在外面等著      num = num + 1      msg = self.name + ' num is ---- ' + str(num)      print msg      mu.release() #釋放鎖def test():  for i in range(10):    s = MyThread()    s.start()'''if __name__ == '__main__':  test()