title: Parse XML namespace with Element Tree findall
body: <p>How can I use a query element tree <code>findall('Email')</code> given the following xml?</p>
  
  
  
  <pre><code>&lt;DocuSignEnvelopeInformation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.docusign.net/API/3.0"&gt;
      &lt;EnvelopeStatus&gt;
          &lt;RecipientStatus&gt;
                  &lt;Type&gt;Signer&lt;/Type&gt;
                  &lt;Email&gt;joe@gmail.com&lt;/Email&gt;
                  &lt;UserName&gt;Joe Shmoe&lt;/UserName&gt;
                  &lt;RoutingOrder&gt;1&lt;/RoutingOrder&gt;
                  &lt;Sent&gt;2015-05-04T09:58:01.947&lt;/Sent&gt;
                  &lt;Delivered&gt;2015-05-04T09:58:14.403&lt;/Delivered&gt;
                  &lt;Signed&gt;2015-05-04T09:58:29.473&lt;/Signed&gt;
          &lt;/RecipientStatus&gt;
      &lt;/EnvelopeStatus&gt;
  &lt;/DocuSignEnvelopeInformation&gt;
  </code></pre>
  
  <p>I have a feeling it has to do with the namespace but I'm not sure. I looked at the <a href="https://docs.python.org/3/library/xml.etree.elementtree.html" rel="nofollow">docs</a> and had no luck. </p>
  
  <pre><code>tree = &lt;xml.etree.ElementTree.ElementTree object at 0x7f27a47c4fd0&gt;
  root = tree.getroot()
  root
  &lt;Element '{http://www.docusign.net/API/3.0}DocuSignEnvelopeInformation' at 0x7f27a47b8a48&gt;
  
  root.findall('Email')
  []
  </code></pre>