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-8

import urllib2
import re

path = "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) + '	' + matchMarketPrice.group(1) + '	' + matchCurrentPrice.group(1) + '
')
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

  

原文地址:https://www.cnblogs.com/Rosanna/p/4125508.html