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    <p>Take a look at these two versions</p> <pre><code>import lxml.html, lxml.etree url_cooking = 'http://cooking.stackexchange.com/feeds' #lxml.etree version data = lxml.etree.parse(url_cooking) summary_nodes = data.xpath('.//feed/entry/summary') print('Found ' + str(len(summary_nodes)) + ' summary nodes') #lxml.html version data = lxml.html.parse(url_cooking) summary_nodes = data.xpath('.//feed/entry/summary') print('Found ' + str(len(summary_nodes)) + ' summary nodes') </code></pre> <p>As you discovered, the second version returns no nodes, but the <code>lxml.html</code> version works fine. The <code>etree</code> version is not working because it's expecting namespaces and the <code>html</code> version is working because it ignores namespaces. Part way down <a href="http://lxml.de/lxmlhtml.html">http://lxml.de/lxmlhtml.html</a>, it says "The HTML parser notably ignores namespaces and some other XMLisms." </p> <p>Note when you print the root node of the etree version (<code>print(data.getroot())</code>), you get something like <code>&lt;Element {http://www.w3.org/2005/Atom}feed at 0x22d1620&gt;</code>. That means it's a feed element with a namespace of <code>http://www.w3.org/2005/Atom</code>. Here is a corrected version of the etree code.</p> <pre><code>import lxml.html, lxml.etree url_cooking = 'http://cooking.stackexchange.com/feeds' ns = 'http://www.w3.org/2005/Atom' ns_map = {'ns': ns} data = lxml.etree.parse(url_cooking) summary_nodes = data.xpath('//ns:feed/ns:entry/ns:summary', namespaces=ns_map) print('Found ' + str(len(summary_nodes)) + ' summary nodes') </code></pre>
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    1. POlxml - difficulty parsing stackexchange rss feed
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    1. CO`data.xpath('//ns:feed/ns:entry/ns:summary', namespaces={'ns': 'http://www.w3.org/2005/Atom'})`
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    2. COgah, no wonder! Looks like the api renamed the `namespaces` keyword at some point. Updating my sample with working code.
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    3. COthank you so much gfortune. I will begin to check the root before heading to parse it.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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