python多线程的使用

mutex=threading.Lock()

 mutex.acquire()
 #临界区
 mutex.release()

for i in range(0,threadNum,1):
            tmp_scan=myThread()
            tmp_scan.setBar.connect(self.setprocessbar)
            tmp_scan.setIp.connect(self.nowip)
            tmp_scan.setDaemon(True)
            threads.append(tmp_scan)
print len(threads)
for thread in threads:
           thread.start()