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python爬取商品信息

老严要爬某网购网站的商品信息,正好我最近在学python,就一起写了一个简单的爬虫程序。

需求:某网的商品信息,包括商品名,市场价和售价

工具:python2.7.8,urllib2,re

#coding = utf-8import urllib2import repath = "aaa.txt"f = open(path, ‘w+‘)for i in range(4980, 4991):    print i        # get webpage content    url = "http://*" + str(i) + "*"    page = urllib2.urlopen(url).read()        # Regular matching    matchTitle = re.search(r‘<dt>(.*?)</dt>‘, page)    matchMarketPrice = re.search(r‘<del.*?>(.*?)</del>‘, page)    matchCurrentPrice = re.search(r‘<b>(.*?)</b>‘, page)    # save result    if matchTitle and matchMarketPrice and matchCurrentPrice:        f.write(matchTitle.group(1) + ‘\t‘ + matchMarketPrice.group(1) + ‘\t‘ + matchCurrentPrice.group(1) + ‘\n‘)f.close()

  部分结果显示:

欧莱雅奇焕光感粉嫩透亮修颜霜30ml ¥120.00 109.00欧莱雅复颜洁面乳125ml	¥130.00	105.00欧莱雅复颜抗皱紧致滋润眼霜15ml	¥210.00	179.00欧莱雅复颜清漾柔肤水175ml	¥160.00	138.00

  

 

python爬取商品信息