Python实现抓取百度搜索结果页的网站标题信息

比如,你想采集标题中包含“58同城”的SERP结果,并过滤包含有“北京”或“厦门”等结果数据。

该Python脚本主要是实现以上功能。

其中,使用BeautifulSoup来解析HTML,可以参考我的另外一篇文章:Windows8下安装BeautifulSoup

代码如下:


__author__ = '曾是土木人'

# -*- coding: utf-8 -*-

#采集SERP搜索结果标题

import urllib2

from bs4 import BeautifulSoup

import time

#写文件

def WriteFile(fileName,content):

    try:

        fp = file(fileName,"a+")

        fp.write(content + "\r")

        fp.close()

    except:

        pass

#获取Html源码 def GetHtml(url):     try:         req = urllib2.Request(url)         response= urllib2.urlopen(req,None,3)#设置超时时间         data    = response.read().decode('utf-8','ignore')     except:pass     return data

#提取搜索结果SERP的标题 def FetchTitle(html):     try:         soup = BeautifulSoup(''.join(html))         for i in soup.findAll("h3"):             title = i.text.encode("utf-8")              if any(str_ in title for str_ in ("北京","厦门")):           continue             else:                 print title             WriteFile("Result.txt",title)     except:         pass

keyword = "58同城" if __name__ == "__main__":     global keyword     start = time.time()     for i in range(0,8):         url = "http://www.baidu.com/s?wd=intitle:"+keyword+"&rn=100&pn="+str(i*100)         html = GetHtml(url)         FetchTitle(html)         time.sleep(1)     c = time.time() - start     print('程序运行耗时:%0.2f 秒'%(c))