import thread
from time import sleep, ctime
loops = [4,2]
def loop(nloop, nsec, lock):
print 'start loop', nloop, 'at:', ctime()
sleep(nsec)
print 'loop', nloop, 'done at:', ctime()
lock.release()
print 'starting at:', ctime()
locks = []
nloops = range(len(loops))
for i in nloops:
lock = thread.allocate_lock()
lock.acquire()
locks.append(lock)
for i in nloops:
thread.start_new_thread(loop,
(i, loops[i], locks[i]))
for i in nloops:
while locks[i].locked(): pass
print 'all DONE at:', ctime()