python datetime对象转时间戳

import datetime,threading

lockObject = threading.Lock()

def testTime():

    global lockObject

    '''这个地方加个线程锁，_strptime_time 线程不安全'''

    lockObject.acquire()

    t = datetime.datetime.now()

    timeStamp =  time.mktime(t.timetuple())

    lockObject.release()

    return timeStamp

    

def getTodayTimeStamp():

    global lockObject

    

    '''这个地方加个线程锁，_strptime_time 线程不安全'''

    lockObject.acquire()

    now = datetime.datetime.now()

    timeStamp = '%s 00:00:00' % now.strftime( '%Y-%m-%d' )

    timeStamp = time.strptime( timeStamp, '%Y-%m-%d %X' )

    timeStamp = int(time.mktime( timeStamp ))

    lockObject.release()

    return timeStamp