下面的python代碼演示線程鎖的用法和線程同步

#!/usr/bin/python

import threading
import time
class myThread (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

    # Get lock to synchronize threads
    threadLock.acquire()
    print_time(self.name, self.counter, 3)
    # Free lock to release next thread
    threadLock.release()


def print_time(threadName, delay, counter):
    while counter:
        time.sleep(delay)
        print "%s: %s" % (threadName, time.ctime(time.time()))
        counter -= 1
threadLock = threading.Lock()
threads = []
Create new threads
thread1 = myThread(1, "Thread-1", 1)
thread2 = myThread(2, "Thread-2", 2)
Start new Threads
thread1.start()
thread2.start()
Add threads to thread list
threads.append(thread1)
threads.append(thread2)
Wait for all threads to complete
for t in threads:
    t.join()
print "Exiting Main Thread"
 </pre> 

 輸出結果
Starting Thread-1
Starting Thread-2
Thread-1: Thu Mar 21 09:11:28 2013
Thread-1: Thu Mar 21 09:11:29 2013
Thread-1: Thu Mar 21 09:11:30 2013
Thread-2: Thu Mar 21 09:11:32 2013
Thread-2: Thu Mar 21 09:11:34 2013
Thread-2: Thu Mar 21 09:11:36 2013
Exiting Main Thread