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POPython, lxml - get a sibling tag's (grand)child's text
 

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    <p>I have an XML to parse which is proving really tricky for me. </p> <pre><code>&lt;bundles&gt; &lt;bundle&gt; &lt;bitstreams&gt; &lt;bitstream&gt; &lt;id&gt;1234&lt;/id&gt; &lt;/bitstream&gt; &lt;/bitstream&gt; &lt;name&gt;FOO&lt;/name&gt; &lt;/bundle&gt; &lt;bundle&gt; ... &lt;/bundle&gt; &lt;/bundles&gt; </code></pre> <p>I would like to iterate through this XML and locate all the <strong>id</strong> values inside of the <strong>bitstreams</strong> for a <strong>bundle</strong> where the <strong>name</strong> element's value is 'FOO'. I'm not interested in any bundles not named 'FOO', and there may be any number of bundles and any number of bitstreams in the bundles.</p> <p>I have been using <code>tree.findall('./bundle/name')</code> to find the FOO bundle but this just returns a list that I can't step through for the <strong>id</strong> values:</p> <pre><code>for node in tree.findall('./bundle/name'): if node.text == 'FOO': id_values = tree.findall('./bundle/bitstreams/bitstream/id') for value in id_values: print value.text </code></pre> <p>This prints out <em>all</em> the id values, not those of the bundle 'FOO'. </p> <p>How can I iterate through this tree, locate the <strong>bundle</strong> with the <strong>name</strong> FOO, take this <strong>bundle</strong> node and collect the <strong>id</strong> values nested in it? Is the XPath argument incorrect here?</p> <p>I'm working in Python, with <code>lxml</code> bindings - but any XML parser I believe would be alright; these aren't large XML trees.</p>
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    1. COCan you show us the code you have so far?
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      1. USPedro Romano
 

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