# illustrating http://stackoverflow.com/a/28539821/2932052
import timeit
print timeit.timeit("math.pow(2, 100)",setup='import math',number=3000000)
print timeit.timeit("pow(2.0, 100.0)",number=3000000)
IyBpbGx1c3RyYXRpbmcgaHR0cDovL3N0YWNrb3ZlcmZsb3cuY29tL2EvMjg1Mzk4MjEvMjkzMjA1MgppbXBvcnQgdGltZWl0CnByaW50IHRpbWVpdC50aW1laXQoIm1hdGgucG93KDIsIDEwMCkiLHNldHVwPSdpbXBvcnQgbWF0aCcsbnVtYmVyPTMwMDAwMDApCnByaW50IHRpbWVpdC50aW1laXQoInBvdygyLjAsIDEwMC4wKSIsbnVtYmVyPTMwMDAwMDAp