Hi ... The expression '//div[@class="col f-cb"]' with single space inside, selects a single element in line 296 without <a> in it. The elements you are probably looking for, have double space inside: "col f-cb". Try this: root.xpath( '//div[@class="col f-cb"]//div[@class="down s-fc3 f-fl"]//a') - there is double space between "col" and "f-cb". This will return only the white rows, the gray rows have class "col col2 f-cb". If you want to get all the elements, you may want to select the elements which contain in the class atribute "col" and "f-cb", regardless whether they have col2 or not: root.xpath('//div[contains(@class,"col") and contains(@class,"f-cb")]/div[@class="down s-fc3 f-fl"]/a') Regards, Piotr 2013/2/22 python <mailtomanage@163.com>

I am having issues with the urllib and lxml.html modules.

Here is my original code:

import urllib import lxml.html down='http://v.163.com/special/visualizingdata/' file=urllib.urlopen(down).read() root=lxml.html.document_fromstring(file) xpath_str="//div[@class='down s-fc3 f-fl']/a" urllist=root.xpath(xpath_str) for url in urllist: print url.get("href")

When run, it returns this output:

http://mov.bn.netease.com/movieMP4/2012/12/A/7/S8H1TH9A7.mp4 http://mov.bn.netease.com/movieMP4/2012/12/D/9/S8H1ULCD9.mp4 http://mov.bn.netease.com/movieMP4/2012/12/4/P/S8H1UUH4P.mp4 http://mov.bn.netease.com/movieMP4/2012/12/B/V/S8H1V8RBV.mp4 http://mov.bn.netease.com/movieMP4/2012/12/6/E/S8H1VIF6E.mp4 http://mov.bn.netease.com/movieMP4/2012/12/B/G/S8H1VQ2BG.mp4

But, when I change the line

xpath_str='//div[@class="down s-fc3 f-fl"]//a'

into

xpath_str='//div[@class="col f-cb"]//div[@class="down s-fc3 f-fl"]//a'

that is to say,

urllist=root.xpath('//div[@class="col f-cb"]//div[@class="down s-fc3 f-fl"]//a')

I do not receive any output. What is the flaw in this code? it is so strange that the shorter one can work,the longer one can not,they have the same xpath structure!

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