Hello. I've got the following code:

import time
import threading

class BaseWrapper: #static class
    lock = threading.Lock()

    @staticmethod
    def synchronized_def():
        BaseWrapper.lock.acquire()
        time.sleep(5)
        BaseWrapper.lock.release()

def test():
    print time.ctime()

if __name__ is '__main__':
    for i in xrange(10):
        threading.Thread(target = test).start()

I want to have a method synchronized using static lock. However the above code prints the same time ten times, so it isn't really locking. How can I fix it? TIA