Compare bit shift and division in Python

shiftordivide.py

"""
Why is division by two slower than bitshift in python? 
Should the "compiler" represent this in the same way. 

> python shiftordivide.py
Divided mean time took 0.027
Shift mean time took 0.008

>pypy shiftordivide.py --OJit
Divided mean time took 0.034
Shift mean time took 0.006

Shift quicker but div slower with JIT compiler? 
"""
import time

divlist = []
for i in xrange(100):
    i = 2**10000
    t1 = time.time()
    while i != 2: 
        i = i / 2
    t2 = time.time()
    divlist.append(t2-t1)
tot = 0
for t in divlist: 
    tot += t

print "Divided mean time took %0.3f" %  (tot/len(divlist))
divlist = []
for i in xrange(100):
    i = 2**10000
    t1 = time.time()
    while i != 2:
        i = i >> 1
    t2 = time.time()
    divlist.append(t2-t1)
tot = 0
for t in divlist:
    tot += t
print "Shift mean time took %0.3f" %  (tot/len(divlist))