#-*- coding:utf-8 -*-
'''
Created on 2011-4-2
作者: 李昱彤
Email: liqi1031@gmail.com
'''

aList=[]
loop=1
try:
    while loop <= 20000001:
        aList.append(loop)
        loop = loop + 1
except MemoryError:
    print "Memory is out of scope."
    import sys
    sys.exit()

aTuple=tuple(aList)

evenNumber1 = 0
oddNumber1 = 0
import time
startTime1=time.time()
for i in aTuple:
    #i is an even number
    if not i % 2:
        evenNumber1 = evenNumber1 + 1
   
    #i is an odd number
    if i % 2:
        oddNumber1 = oddNumber1 + 1
print "Total number are %s" % len(aTuple)
print "even number are %s" % evenNumber1
print "odd number are %s" % oddNumber1   
print "Costed time are %s seconds" % round((time.time() - startTime1),3)

evenNumber2 = 0
oddNumber2 = 0
startTime2=time.time()
for x in aList:
    #x is an even number
    if not x % 2:
        evenNumber2 = evenNumber2 + 1
    #x is an odd number
    if x % 2:
        oddNumber2 = oddNumber2 + 1

print "\nTotal number are %s" % len(aList)
print "even number are %s" % evenNumber2
print "odd number are %s" % oddNumber2
print "Costed time are %s seconds" % round((time.time() - startTime2),3)

 

 

测试结果：

元组：

Total number are 20000001
even number are 10000000
odd number are 10000001
Costed time are 8.437 seconds

列表：

Total number are 20000001
even number are 10000000
odd number are 10000001
Costed time are 9.064 seconds