title: Not able to extract text from the td tag/element using python scrapy
body: <p>I want to extract the text  from the site <a href="http://www.jabong.com/Puma-Wirko-Ind-Black-Sneakers-187839.html" rel="nofollow">http://www.jabong.com/Puma-Wirko-Ind-Black-Sneakers-187839.html</a> using x-path:</p>
  
  <pre><code>      `item['pcode'] = hxs.select('//*[@id="productInfo"]/div[1]/div[2]/table/tbody/tr[8]/td[2]/text()').extract()`
  </code></pre>
  
  <p>I'm getting null value.</p>