gistfile1.pyw

import time

def bench(func):
    loop = 3
    tim = [] * loop

    for i in range(loop):
        start = time.time()
        func()
        tim.append( time.time() - start )
        print " time %f sec" % (tim[i])
    
    print " average %f sec" % ( sum(tim) / loop )


def sumint():
    s = 0
    for n in range(10**7):
        s += n


def sumlist():
    sum([ i for i in range(10**7)])


def sumfloat():
    s = 0
    N = float(10**7)
    for n in range(int(N)):
        s += float(n)/N


import random
def generate_random():
    for i in range( 10**7 ):
        a = random.random()


def append_array():
    array = []
    for i in range( 10**7 ):
        array.append(1)


def append_array_random():
    array = []
    for i in range( 10**6 ):
        array.append(random.random())
    return array


def sort_random():
    array = append_array_random()
    array.sort()


def generate_array():
    array = [0] * ( 10**8 )


print "sumint"
bench(sumint)

print "sumlist"
bench(sumlist)

print "sumfloat"
bench(sumfloat)

print "generate_random"
bench(generate_random)

print "append_array"
bench(append_array)

print "append_array_random"
bench(append_array_random)

print "sort_random"
bench(sort_random)

print "generate_array"
bench(generate_array)