import random, threading
def threadFunction():
  for i in range(10):
    print 'ThreadFuction - %d'%i
    time.sleep(random.randrange(0,2))


class ThreadClass(threading.Thread):
  def __init__(self):
    threading.Thread.__init__(self);
    
  def run(self):
    for i in range(10):
      print 'ThreadClass - %d'%i
      time.sleep(random.randrange(0,2))

if __name__ == '__main__':
  tFunc = threading.Thread(target = threadFunction);
  tCls = ThreadClass()
  tFunc.start()
  tCls.start()

ThreadFuction - 0
ThreadFuction - 1
ThreadFuction - 2
ThreadClass - 0
ThreadFuction - 3
ThreadClass - 1
ThreadFuction - 4
ThreadClass - 2
ThreadClass - 3
ThreadClass - 4ThreadFuction - 5

ThreadClass - 5
ThreadClass - 6
ThreadClass - 7
ThreadClass - 8
ThreadFuction - 6ThreadClass - 9

ThreadFuction - 7
ThreadFuction - 8
ThreadFuction - 9

class threading.Thread(group=None, target=None, name=None, args=(), kwargs={})

data = threading.local()
def threadFunction():
  global data
  data.x = 3
  print threading.currentThread(), data.x
  
if __name__ == '__main__':
  data.x = 1
  tFunc = threading.Thread(target = threadFunction).start();
  time.sleep(1)
  print threading.current_thread(), data.x

<Thread(Thread-1, started 36208)> 3
<_MainThread(MainThread, started 35888)> 1

def threadFunction(arg):
  while True:
    lock.acquire()
    print 'ThreadFuction - %d'%arg
    lock.release()

if __name__ == '__main__':
  lock = threading.Lock()
  threading.Thread(target = threadFunction, args=(1,)).start();
  threading.Thread(target = threadFunction, args=(2,)).start();

threading.Condition([lock]) 分配一个条件变量
acquire(*args)        条件变量上锁
release()          条件变量解锁
wait([timeout])       等待唤醒，timeout表示超时
notify(n=1)         唤醒最大n个等待的线程
notifyAll()、notify_all()  唤醒所有等待的线程
下面这个例子使用条件变量来控制两个线程交替运行

num = 0
def threadFunction(arg):
  global num
  while num < 10:
    cond.acquire()
    while num % 2 != arg:
      cond.wait()
    print 'Thread %d - %d' %(arg, num)
    num += 1
    cond.notify()
    cond.release()

if __name__ == '__main__':
  cond = threading.Condition()
  threading.Thread(target = threadFunction, args=(0,)).start();
  threading.Thread(target = threadFunction, args=(1,)).start();

Thread 0 - 0
Thread 1 - 1
Thread 0 - 2
Thread 1 - 3
Thread 0 - 4
Thread 1 - 5
Thread 0 - 6
Thread 1 - 7
Thread 0 - 8
Thread 1 - 9
Thread 0 - 10