#!/usr/bin/env python
from __future__ import print_function, division
import timeit

setup = '''n = 100'''
current = '''list(reversed(xrange(1, n)))'''
proposd = '''list(xrange(n, 1, -1))'''

t1 = timeit.timeit(current, setup)
t2 = timeit.timeit(proposd, setup)
speedup = ( (t2-t1) / t1 ) * 100.0

print('current: ', t1)
print('proposd: ', t2)
print('speedup: %f.2%%' % speedup)