Comparison of exec time for a list generation in Python

bench.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

# 
# bench.py
# 
# Created by FUKUBAYASHI Yuichiro on 2015/05/09
# Copyright (c) 2015, FUKUBAYASHI Yuichiro
# 
# last update: <2015/05/09 02:42:22>
# 

import sys
from optparse import OptionParser
import time
from array import array

# list all 0
def list_0_append(n):
    xs = []
    for i in xrange(n):
        xs.append(0)
    return xs

def list_0_comp(n):
    return [0 for i in xrange(n)]

def list_0_multi(n):
    return [0] * n

def list_0_array(n):
    return array('I', [0 for i in xrange(n)])

def list_0_range(n):
    xs = range(n)
    for i in xrange(n):
        xs[i] = 0
    return xs

# list i
def list_i_append(n):
    xs = []
    for i in xrange(n):
        xs.append(i)
    return xs

def list_i_comp(n):
    return [i for i in xrange(n)]

def list_i_multi(n):
    xs = [0] * n
    for i in xrange(n):
        xs[i] = i
    return xs

def list_i_array(n):
    return array('I', [i for i in xrange(n)])

def list_i_range(n):
    return range(n)

# measure exec time
def exec_time(n, n_sample, func):
    t = 0.0

    for i in range(n_sample):
        start = time.clock()
        func(n)
        end = time.clock()
        t += (end - start)

    return t / n_sample


def main(options, args):
    n = options.n
    n_sample = 5
    
    print "--Python version--"
    print sys.version
    print 

    print "--list_0--"
    for f in [list_0_append,
              list_0_comp,
              list_0_multi,
              list_0_array,
              list_0_range]:
        print "%s(%d) in %f(s)" % (f.__name__,
                                   n,
                                   exec_time(n, n_sample, f))

    print

    print "--list_i--"
    for f in [list_i_append,
              list_i_comp,
              list_i_multi,
              list_i_array,
              list_i_range]:
        print "%s(%d) in %f(s)" % (f.__name__,
                                   n,
                                   exec_time(n, n_sample, f))

if __name__ == '__main__':
    parser = OptionParser()
    parser.add_option('-n', action='store', type='int', default=10000)
    options, args = parser.parse_args()
    main(options, args)