python实战之原生爬虫(爬取熊猫主播排行榜)

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"""
this is a module,多行注释
"""
import refrom urllib import request
# BeautifulSoup:解析数据结构 推荐库 Scrapy:爬虫框架
#爬虫，反爬虫，反反爬虫
#ip 封
#代理ip库
class Spider():
url='https://www.panda.tv/cate/lol'
root_pattern='<div class="video-info">([\s\S]*?)</div>'
name_pattern='</i>([\s\S]*?)</span>'
number_pattern='<span class="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
a=1 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,achors):
l=lambda anchor:{'name':anchor['name'][0].strip(),'number':anchor['number'][0]}
return map(l,achors) def __sort(self,anchors): anchors=sorted(anchors,key=self.__sord_seed,reverse=True)
return anchors def __show(self,anchors):
for rank in range(0,len(anchors)):
print('rank '+str(rank+1)+':'+anchors[rank]['name']
+' '+anchors[rank]['number']
) def __sord_seed(self,anchor):
r=re.findall('\d*',anchor['number'])
number= float(r[0])
if '万' in anchor['number']:
number*=10000
return number def go(self):
htmls=self.__fetch_content()
anchors=self.__analysis(htmls)
anchors=list(self.__refine(anchors))
anchors=self.__sort(anchors)
self.__show(anchors)splider=Spider()
splider.go()