python3 爬虫内涵段子

import re
from urllib import request
class Sprder:
    def __init__(self):
        self.page=1
        self.switch=True
    def loadPage(self):
        """"
        下载页面
        """
        url="http://www.neihan8.com/article/list_5_"+str(self.page)+".html"
        user_agent = 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT6.1; Trident / 5.0'
        headers = {'User-Agent': user_agent}
        request1=request.Request(url,headers=headers)
        response=request.urlopen(request1)
        html=response.read().decode("gbk")
        pattern=re.compile(r'<div\sclass="f18 mb20">(.*?)</div>', re.S)
        content_list=pattern.findall(html)

        self.dealPage(content_list)

    def dealPage(self,content_list):
        """
        处理每页段子
        """
        for item in content_list:
            item=item.replace("<p>","").replace("</p>","").replace("<br>","").replace("<br />","").replace("&ldquo;","")
            self.writePage(item)

    def writePage(self,item):
        """
         把段子逐个写入文件
        """
        with open("段子.txt","a") as f:
            f.write(item)
    def startWork(self):
        """
        控制爬虫运行

        """
        while self.switch:
            self.loadPage()
            command=str(input("如果继续按回车（退出输入quit）"))
            if command=="quit":
                self.switch=False

            self.page+=1
if __name__ == '__main__':
        duanziSpider=Sprder()
        # duanziSpider.loadPage()
        duanziSpider.startWork()