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POXPath to select an element if previous element contain a matching text() - Python, Scrapy
 

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    <p>I want to extract an element if the previous elements text() matches specific criteria. for example,</p> <pre><code>&lt;html&gt; &lt;div&gt; &lt;table class="layouttab"&gt; &lt;tbody&gt; &lt;tr&gt; &lt;td scope="row" class="srb"&gt;General information:&amp;nbsp;&amp;nbsp;&lt;/td&gt; &lt;td&gt;(xxx) yyy-zzzz&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td scope="row" class="srb"&gt;Website:&amp;nbsp;&amp;nbsp;&lt;/td&gt; &lt;td&gt;&lt;a href="http://xyz.edu" target="_blank"&gt;http://www.xyz.edu&lt;/a&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td scope="row" class="srb"&gt;Type:&amp;nbsp;&amp;nbsp;&lt;/td&gt; &lt;td&gt;4-year, Private for-profit&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td scope="row" class="srb"&gt;Awards offered:&amp;nbsp;&amp;nbsp;&lt;/td&gt; &lt;td&gt;Less than one year certificate&lt;br&gt;One but less than two years certificate&lt;br&gt;Associate's degree&lt;br&gt;Bachelor's degree &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td scope="row" class="srb"&gt;Campus setting:&amp;nbsp;&amp;nbsp;&lt;/td&gt; &lt;td&gt;City: Small&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td scope="row" class="srb"&gt;Related Institutions:&lt;/td&gt; &lt;td&gt;&lt;a href="?q=xyz"&gt;xyz-New York&lt;/a&gt; (Parent): &lt;ul&gt; &lt;li style="list-style:circle"&gt;Berkeley College - Westchester Campus&lt;/li&gt; &lt;/ul&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt; &lt;/table&gt; &lt;/div&gt; &lt;/html&gt; </code></pre> <p>Now, I want to extract the URL if the previous element has "Website: " in text() properties. I am using python 2.x with scrapy 0.14. I was able to extract data using individual element such as</p> <pre><code> item['Header_Type']= site.select('div/table[@class="layouttab"]/tr[3]/td[2]/text()').extract() </code></pre> <p>But this approach fails if the website parameter is missing and the tr[3] shift upward and i get 'Type' in website element and 'Awards offered' in Type.</p> <p>Is there a specific command in xPath like,</p> <pre><code>'div/table[@class="layouttab"]/tr/td[2] {if td[1] has text = "Website"} </code></pre> <p>Thanks in advance.</p>
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