使用Python自带的库和正则表达式爬取熊猫直播主播观看人气

• 主要是体现代码的规范性
  

  from urllib import request
  import re
  
  
  class Spider():
      url = 'https://www.panda.tv/cate/lol'
      root_pattern = '<div class="video-info">([sS]*?)</div>'
      name_pattern = '</i>([sS]*?)</span>'
      number_pattern = '<span class="video-number">([sS]*?)</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)
          # print(root_html[1])
          # print(anchors[1])
          return anchors
  
      def __refine(self, anchors):
          L = lambda anchor: {"name": anchor['name'][0].strip(), 'number': anchor['name'][1]}
          return map(L, anchors)
  
      def __sort(self, anchors):
          anchors = sorted(anchors, key=self.__sort_seed, reverse=True)
          return anchors
  
      def __sort_seed(self, anchor):
          r = re.findall("d*", anchor["number"])
          number = float(r[0])
          if '万' in anchor['number']:
              number = number * 10000
          return number
  
      def __show(self, anchors):
          for rank in range(0, len(anchors)):
              print("排名："+str(rank+1)+"  主播：" + anchors[rank]['name'] +
                    "--------" + "观看人数：" +
                    anchors[rank]['number'])
  
  
  
  
      def go(self):
          htmls = self.__fetch_content()
          anchors = self.__analysis(htmls)
          anchors = list(self.__refine(anchors))
          anchors = self.__sort(anchors)
          self.__show(anchors)
          print(len(anchors))
          # print(anchors)
  
  
  spider = Spider()
  spider.go()