import psyco psyco.full() import time t0 = time.clock() cur = 2 while cur < 100000 : trialDivisor = 2 prime = 1 while trialDivisor * trialDivisor <= cur : if cur % trialDivisor == 0 : prime = 0 break trialDivisor += 1 cur += 1 print time.clock() - t0, "seconds process time" """ Administrator@Amnesiac>python2.3 psyco-test.py 2.79783082008 seconds process time """