thread time

time.py

import time
import threading
def deadloop(times):
	while times>0:
		times -= 1
		a = 1 + 2

start = time.time()
deadloop(100000000)
end = time.time()
print "take %f second" %(end-start)

start = time.time()
deadloop(50000000)
end = time.time()
print "take %f second" %(end-start)

t1 = threading.Thread(target= deadloop,args=(100000000,))
t2 = threading.Thread(target= deadloop,args=(50000000,))
t1.start()
t2.start()
start = time.time()
t2.join()
t1.join()
end = time.time()
print "take %f second" %(end-start)