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        <a href="lxml-module.html">Package&nbsp;lxml</a> ::
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        Class&nbsp;XPathElementEvaluator
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<h1 class="epydoc">Class XPathElementEvaluator</h1><p class="nomargin-top"></p>
<pre class="base-tree">
         object --+    
                  |    
<a href="lxml.etree._XPathEvaluatorBase-class.html" onclick="show_private();">_XPathEvaluatorBase</a> --+
                      |
                     <strong class="uidshort">XPathElementEvaluator</strong>
</pre>

<dl><dt>Known Subclasses:</dt>
<dd>
      <ul class="subclass-list">
<li><a href="lxml.etree.XPathDocumentEvaluator-class.html">XPathDocumentEvaluator</a></li>  </ul>
</dd></dl>

<hr />
<p>XPathElementEvaluator(self, element, namespaces=None, extensions=None, regexp=True, smart_strings=True)
Create an XPath evaluator for an element.</p>
<p>Absolute XPath expressions (starting with '/') will be evaluated against
the ElementTree as returned by getroottree().</p>
<p>Additional namespace declarations can be passed with the
'namespace' keyword argument.  EXSLT regular expression support
can be disabled with the 'regexp' boolean keyword (defaults to
True).  Smart strings will be returned for string results unless
you pass <tt class="rst-docutils literal">smart_strings=False</tt>.</p>

<a name="section-InstanceMethods"></a>
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      <span class="summary-type">&nbsp;</span>
    </td><td class="summary">
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        <tr>
          <td><span class="summary-sig"><a href="lxml.etree.XPathElementEvaluator-class.html#__call__" class="summary-sig-name">__call__</a>(<span class="summary-sig-arg">self</span>,
        <span class="summary-sig-arg">_path</span>,
        <span class="summary-sig-arg">**_variables</span>)</span><br />
      Evaluate an XPath expression on the document.</td>
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      <span class="summary-type">&nbsp;</span>
    </td><td class="summary">
      <table width="100%" cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td><span class="summary-sig"><a href="lxml.etree.XPathElementEvaluator-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
        <span class="summary-sig-arg">element</span>,
        <span class="summary-sig-arg">namespaces</span>=<span class="summary-sig-default">None</span>,
        <span class="summary-sig-arg">extensions</span>=<span class="summary-sig-default">None</span>,
        <span class="summary-sig-arg">regexp</span>=<span class="summary-sig-default">True</span>,
        <span class="summary-sig-arg">smart_strings</span>=<span class="summary-sig-default">True</span>)</span><br />
      x.__init__(...) initializes x; see help(type(x)) for signature</td>
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    </td>
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<tr>
    <td width="15%" align="right" valign="top" class="summary">
      <span class="summary-type">a new object with type S, a subtype of T</span>
    </td><td class="summary">
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        <tr>
          <td><span class="summary-sig"><a href="lxml.etree.XPathElementEvaluator-class.html#__new__" class="summary-sig-name">__new__</a>(<span class="summary-sig-arg">T</span>,
        <span class="summary-sig-arg">S</span>,
        <span class="summary-sig-arg">...</span>)</span></td>
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      <span class="summary-type">&nbsp;</span>
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        <tr>
          <td><span class="summary-sig"><a name="register_namespace"></a><span class="summary-sig-name">register_namespace</span>(<span class="summary-sig-arg">...</span>)</span><br />
      Register a namespace with the XPath context.</td>
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          </td>
        </tr>
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    </td>
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      <span class="summary-type">&nbsp;</span>
    </td><td class="summary">
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          <td><span class="summary-sig"><a name="register_namespaces"></a><span class="summary-sig-name">register_namespaces</span>(<span class="summary-sig-arg">...</span>)</span><br />
      Register a prefix -&gt; uri dict.</td>
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    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._XPathEvaluatorBase-class.html" onclick="show_private();">_XPathEvaluatorBase</a></code></b>:
      <code><a href="lxml.etree._XPathEvaluatorBase-class.html#evaluate">evaluate</a></code>
      </p>
    <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
      <code>__delattr__</code>,
      <code>__format__</code>,
      <code>__getattribute__</code>,
      <code>__hash__</code>,
      <code>__reduce__</code>,
      <code>__reduce_ex__</code>,
      <code>__repr__</code>,
      <code>__setattr__</code>,
      <code>__sizeof__</code>,
      <code>__str__</code>,
      <code>__subclasshook__</code>
      </p>
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    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._XPathEvaluatorBase-class.html" onclick="show_private();">_XPathEvaluatorBase</a></code></b>:
      <code><a href="lxml.etree._XPathEvaluatorBase-class.html#error_log">error_log</a></code>
      </p>
    <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
      <code>__class__</code>
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<a name="__call__"></a>
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">__call__</span>(<span class="sig-arg">self</span>,
        <span class="sig-arg">_path</span>,
        <span class="sig-arg">**_variables</span>)</span>
    <br /><em class="fname">(Call operator)</em>
  </h3>
  </td><td align="right" valign="top"
    >&nbsp;
    </td>
  </tr></table>
  
  <p>Evaluate an XPath expression on the document.</p>
<p>Variables may be provided as keyword arguments.  Note that namespaces
are currently not supported for variables.</p>
<p>Absolute XPath expressions (starting with '/') will be evaluated
against the ElementTree as returned by getroottree().</p>
  <dl class="fields">
  </dl>
</td></tr></table>
</div>
<a name="__init__"></a>
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<tr><td>
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  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
        <span class="sig-arg">element</span>,
        <span class="sig-arg">namespaces</span>=<span class="sig-default">None</span>,
        <span class="sig-arg">extensions</span>=<span class="sig-default">None</span>,
        <span class="sig-arg">regexp</span>=<span class="sig-default">True</span>,
        <span class="sig-arg">smart_strings</span>=<span class="sig-default">True</span>)</span>
    <br /><em class="fname">(Constructor)</em>
  </h3>
  </td><td align="right" valign="top"
    >&nbsp;
    </td>
  </tr></table>
  
  x.__init__(...) initializes x; see help(type(x)) for signature
  <dl class="fields">
    <dt>Overrides:
        object.__init__
    </dt>
  </dl>
</td></tr></table>
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">__new__</span>(<span class="sig-arg">T</span>,
        <span class="sig-arg">S</span>,
        <span class="sig-arg">...</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    >&nbsp;
    </td>
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  <dl class="fields">
    <dt>Returns: a new object with type S, a subtype of T</dt>
    <dt>Overrides:
        object.__new__
    </dt>
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