在阅读 的代码后，观察龙族三漫画图片地址规律，简写专门下载龙族三漫画的小爬虫。

#coding=utf-8import os import urllib2#简单下载器def download(url, save_path):    try:        with open(save_path, 'wb') as fp:            fp.write(urllib2.urlopen(url).read())    except Exception, et:        print(et)#定义存储目录save_folder = ".\longzu"if not os.path.exists(save_folder):    os.mkdir(save_folder)#漫画图片链接，可通过格式化字符串的方式获取新的图片链接url = 'http://mhpic.zymk.cn/comic/L%2F%E9%BE%99%E6%97%8F%E2%85%A2%2F{0}%E8%AF%9D%2F{1}.jpg-mht.middle'#初始章节chapter = 1#循环下载章节while chapter < 47:    #生成章节目录    folder = os.path.join(save_folder,u"第 %d 话"%chapter)    if not os.path.exists(folder):        os.mkdir(folder)        index = 1    while True:        image_url = url.format('%.2d'%chapter,index)        save_image_name = os.path.join(folder,"%.2d"%index+"."+"jpg")        #判断是否到达章节最后一页        try:            tmp = urllib2.urlopen(image_url).read()        except urllib2.HTTPError:            break                print "downloading:%s from url:%s" % (save_image_name,image_url)        download(image_url, save_image_name)        index += 1    chapter += 1