import urllib2
import urllib
import sys

class get_mm_pic(object):
    def __init__(self,page_num):
    self.page_num = page_num
    self.mmurl= "http://mm.taobao.com/json/request_top_list.htm?type=0&page="#抓取的链接
    def get_pic(self):
    i = 1
    page_num = self.page_num
    temp ='''<img src="'''
    while i<page_num:
        url = self.mmurl + str(i)
        up = urllib2.urlopen(url)
        cont = up.read()#读取页面内容
        pa = j = 0
        while True:
            ahref = '''<a href="http'''
            target = "target"
            pa = cont.find(ahref)#匹配字符串
            pt = cont.find(target, pa)
            if pa == -1:
                break
            modelurl = cont[pa+len(ahref)-4: pt-2]
            mup= urllib2.urlopen(modelurl)
            mcont = mup.read()

            header = "<img style"
            tail = ".jpg"
            iph = k = 0
            while True:
                iph = mcont.find(header)
                ipj = mcont.find(tail, iph)
                if iph == -1:#匹配失败则跳出循环
                    break
                mpic = mcont[iph : ipj + len(tail)]
                ips = mpic.find("src")
                urlpic = mpic[ips +len("src ="):]
                try:
                    print ">>>downloading : lady_p"+str(i)+"_no_"+str(j)+"_pic_"+str(k)+".jpg......"
                    urllib.urlretrieve(urlpic, "lady_p"+str(i)+"_no_"+str(j)+"_pic_"+str(k)+".jpg")#下载图片
                except KeyboardInterrupt:
                    print "SIGINT, exit..."
                    sys.exit(0)
                except:
                    pass
                mcont = mcont[ipj+1:]
                k+=1
            cont = cont[pt+1:]
            j+=1
        i += 1
    print ">>>download completed"
def main(page_num):
    get_mm_pictures = get_mm_pic(page_num)
    print "@Author:www.muzixing.com"
    get_mm_pictures.get_pic()

if __name__ == '__main__':
    main(int(sys.argv[1]))#python spider.py number