python 图片小爬虫

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#coding=utf-8#下载百度贴吧的图片import urllibimport urllib2import reimport osclass worn:    def getPage(self):        url = 'http://tieba.baidu.com/p/4906753776'        request = urllib2.Request(url)        response = urllib2.urlopen(request)        return  response.read()    def getImg(self,page):        pattern = r'src="(.*?\.jpg)".*?>'        pattern = re.compile(pattern)        items = re.findall(pattern,page)        x = 0        for imgurl in items:            urllib.urlretrieve(imgurl,'%s.jpg' % x)  # 将文件下载下来            x+=1            if x>4:                returnworn1 = worn()page = worn1.getPage()worn1.getImg(page)