回复 7七月：老师，我搞了一上午这个爬虫，最后失败，请老师帮学生分析一下是哪里的问题好不好，谢谢

import re

from urllib import request

class Spider():

    url = 'https://www.panda.tv/cate/lol?pdt=1.24.s1.3.4mupgj3d1gv'

    root_pattern = '<div class="video-info">([\s\S]*?)</span>'

    name_pattern = '<span class="video-nickname" title="([\s\S]*?)">...</span>'

    number_pattern = '<span calss="video-number">([\s\S]*?)</span>'

    def __fetch_content(self):

        r = request.urlopen(Spider.url)

        htmls = r.read()

        htmls = str(htmls,encoding = 'utf-8')

        return htmls

    def __analysis(self,htmls):

        root_html = re.findall(Spider.root_pattern,htmls)

        anchors = []

        for html in root_html:

            name = re.findall(Spider.name_pattern,html)

            number = re.findall(Spider.number_pattern,html)

            anchor = {'name':name,'number':number}

            anchors.append(anchor)

        return anchors

    def __refine(self,anchors):

        l = lambda anchor:{'name':anchor['name'][0].strip(),'number':anchor['number'][0]}

        return map(l,anchors)

    def __sort_seed(self,anchor):

        r = re.findall('\d*',anchor['number'])

        number = float(r[0])

        if '万' in anchor['number']:

            number *= 10000

        return number

    def __sort(self,anchors):

        anchors = sorted(anchors,key = self.__sort_seed(),reverse = True)

        return anchors

    def __show(self,anchors):

        for anchor in anchors:

            print(anchor['name'] + '`````````````' + anchor['number'])

    def go(self):

        htmls = self.__fetch_content()

        anchors = self.__analysis(htmls)

        anchors = list(self.__refine(anchors))

        anchors = slef.__(anchors)

        self.__show(anchors)

spider = Spider()

spider.go()

每次都显示list index out of range