python 下载网页图片

#encoding=utf-8'''Created on Dec 7, 2011@author: cooler'''import urllib2import urllibimport osimagepath=["http://hdn.xnimg.cn/photos/hdn221/20110528/1145/tiny_QKbC_85482j019118.jpg"]def cd(path):    try:        os.mkdir(path)        os.chdir(path)        return 0    except:        return 1#download imagesdef image_down(path,list_image):    cd(path)    if not list_image:        print "no img"    else:        for image in list_image:            try:                urllib.urlretrieve(image,image.split('/')[-1]) #利用image.split('/')[-1]获得文件名                print "save : "+image+" success ！"            except:                print "save : "+image+" failure and continue...."#调用图片下载函数image_down("C:/img",imagepath)