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import threading
from time import sleep, ctime
loops = [4,2]
def loop(nloop, nsec):
print 'start loop', nloop, 'at:', ctime()
sleep(nsec)
print 'loop', nloop, 'done at:', ctime()
print 'starting at:', ctime()
threads = []
nloops = range(len(loops))
for i in nloops:
t = threading.Thread(target=loop,args=(i, loops[i]))
threads.append(t)
for i in nloops:
threads[i].start()
for i in nloops:
threads[i].join()
print 'all DONE at:', ctime()
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