有几个注意点：

# -*- coding: utf-8 -*- # func passport jw.qdu.edu.cnimport reimport urllib # python3后urllib.request代替urllib2import urllib.requestimport jsonfrom bs4 import BeautifulSoupclass taofen:    def getHtml(self , pageurl):        # 获取网站html代码        req = urllib.request.Request(pageurl , headers = {            'Connection': 'Keep-Alive',            'Accept': 'text/html, application/xhtml+xml, */*',            'Accept-Language': 'en-US,en;q=0.8,zh-Hans-CN;q=0.5,zh-Hans;q=0.3',            'User-Agent': 'Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko'        })        _respose = urllib.request.urlopen(req , timeout = 2)        try:            html = _respose.read().decode('UTF-8').replace(' ','')        except Exception as e:            pass        return html    def getKind(self , html):        soup = BeautifulSoup(html , "html.parser")        liList = soup.find_all('li')        res = []        for li in liList:            if li.img and li.find(class_ = "change_price"):                img = li.img.attrs['original']                name = li.img.attrs['alt']                price = li.find(class_ = "change_price").string                resNode = {
   'img':img,'name':name,'price':price}                res.append(resNode)        return resif __name__ == "__main__":    taofen = taofen()    html = taofen.getHtml("http://www.taofen8.com/promcat-4/cat-300/subcat-0/page-1/order-3/sp-2")        res = taofen.getKind(html)    #ensure_ascii=False将utf-8编码的中文正确显示    res = json.dumps(res , ensure_ascii = False)     print(res)