title: lxml (xml python parser) go to next element
body: <p>Has someone know how to jump to the next element in xml? i.e</p>
  
  <pre><code>&lt;xml&gt;
  &lt;node&gt;&lt;/node&gt;
  &lt;text number="2"&gt;Text number 2&lt;/text&gt;
  &lt;text number="3"&gt;Text number 3&lt;/text&gt;
  ...
  &lt;text number="N"&gt;Text number N&lt;/text&gt;
  ...
  &lt;node&gt;&lt;/node&gt;
  &lt;/xml&gt;
  </code></pre>
  
  <p>I would like to be able to jump to element  with number 3 then iterate few times forward.</p>
  
  <pre><code>element2 = xpath('//text[@number="2"]')
  element3 = element2.nextElement()
  returns &lt;text number="3"&gt;Text number 3&lt;/text&gt;
  element4 = element3.nextElement() ...
  </code></pre>
  
  <p><strong>I know that I can find all elements with attribute 'number' then iterate over them but important for me is to be able to go to next element starting from selected (element after) - example is just simplified</strong></p>
  
  <p>Thanks :)</p>