Python抓取关键词代码片段，,用python来做数据抓

Python抓取关键词代码片段，,用python来做数据抓

用python来做数据抓取挖掘是很不错的，下边就是用python方法来抓取百度关键词的实现方法代码片段。

编橙之家之前的python 爬虫系列视频教程中也有讲到python数据抓取相关的问题，有兴趣的朋友可以关注一下。

#-*- coding: UTF-8 -*-  #Python UTF-8#key.txt是抓取文件配置import cgi,urllib #URL读取import re #正则匹配import MySQLdb #MySQLimport datetime #时间#import time,thread #多线程"""MySQL表结构CREATE TABLE `baidu` (  `id` int(10) unsigned NOT NULL auto_increment,  `url` varchar(200) NOT NULL,  `title` varchar(600) NOT NULL,  `keys` varchar(100) NOT NULL,  `bdurl` varchar(200) NOT NULL,  `date` date NOT NULL,  PRIMARY KEY  (`id`)) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;"""def Yang_Config ():fp = open('key.txt','r')for line in fp.read().split('@'):word = line.split(',') #word 是字典#for item in word :#print item.encode("UTF-8")#print '------'if len(word) > 1:yang_u = word[0]yang_k = word[1]Yang_Spider(yang_u,yang_k)#抓取页面开始def Yang_Spider(yang_u,yang_k):url = 'http://www.baidu.com/s?wd=%s+site:%s&&rn=100'% (yang_k,yang_u)print urlfp = urllib.urlopen(url).read()#print fp re.searchm = re.findall(r"<table cellpadding=\"0\" cellspacing=\"0\" class=\"result\" id=\"(\d+)\"\s*?><tr><td class=f><h3 class=\"t\">(<font.*?<\/font>)?<a.*?href=\"(.*?)\"\s*?target=\"_blank\">(.*?)<\/a>\s*?<\/h3><font size=\-1>.*?<span class=\"g\">.*? ((\d{4}\-\d{1,2}\-\d{1,2})|(\d+小时前)|(\d+分钟前)) .*?<\/span>.*?<br><\/font><\/td><\/tr><\/table>",fp)if m:  #print m #for s in m:#数组抓取过来是gbk 转码成utf8.encode("UTF-8") 是汉字decode('gbk') ASNII转UTF8 入数据库操作print str(s[3]) #print '~~~'.join(s) #切割数组Yang_MySQL (yang_k,yang_u,s)#入库#for i, s in enumerate(m.group(3)):#print i,selse:  print 'not search'def Yang_MySQL (k,u,s):global cursor,dcursor.execute("set names utf8")key_unicode = s[3].decode('gb2312') #gb2312key_utf8 = key_unicode.encode('utf-8')SQL = " INSERT INTO `baidukey`.`baidu` (`url` ,`title` ,`keys` ,`bdurl` ,`date`) VALUES ('%s', '%s', '%s','%s','%s'); " % (s[2],key_utf8,k,u,d)insert = cursor.execute(SQL)#print SQL#www.iplaypy.com#运行抓取函数conn = MySQLdb.connect(host="localhost",user="phper",passwd="123456",db="baidukey")cursor = conn.cursor()t = datetime.datetime.now()d = t.strftime('%Y-%m-%d')#%H:%M:%SDel = " DELETE FROM `baidukey`.`baidu` WHERE date = '%s'" % (d)cursor.execute(Del)Yang_Config()

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