doc/html/api/lxml.etree.XPathElementEvaluator-class.html

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  45         <a href="lxml-module.html">Package&nbsp;lxml</a> ::
  46         <a href="lxml.etree-module.html">Module&nbsp;etree</a> ::
  47         Class&nbsp;XPathElementEvaluator
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  63 <!-- ==================== CLASS DESCRIPTION ==================== -->
  64 <h1 class="epydoc">Class XPathElementEvaluator</h1><p class="nomargin-top"></p>
  65 <pre class="base-tree">
  66          object --+
  67                   |
  68 <a href="lxml.etree._XPathEvaluatorBase-class.html" onclick="show_private();">_XPathEvaluatorBase</a> --+
  69                       |
  70                      <strong class="uidshort">XPathElementEvaluator</strong>
  71 </pre>
  72
  73 <dl><dt>Known Subclasses:</dt>
  74 <dd>
  75       <ul class="subclass-list">
  76 <li><a href="lxml.etree.XPathDocumentEvaluator-class.html">XPathDocumentEvaluator</a></li>  </ul>
  77 </dd></dl>
  78
  79 <hr />
  80 <p>XPathElementEvaluator(self, element, namespaces=None, extensions=None, regexp=True, smart_strings=True)
  81 Create an XPath evaluator for an element.</p>
  82 <p>Absolute XPath expressions (starting with '/') will be evaluated against
  83 the ElementTree as returned by getroottree().</p>
  84 <p>Additional namespace declarations can be passed with the
  85 'namespace' keyword argument.  EXSLT regular expression support
  86 can be disabled with the 'regexp' boolean keyword (defaults to
  87 True).  Smart strings will be returned for string results unless
  88 you pass <tt class="rst-docutils literal">smart_strings=False</tt>.</p>
  89
  90 <!-- ==================== INSTANCE METHODS ==================== -->
  91 <a name="section-InstanceMethods"></a>
  92 <table class="summary" border="1" cellpadding="3"
  93        cellspacing="0" width="100%" bgcolor="white">
  94 <tr bgcolor="#70b0f0" class="table-header">
  95   <td colspan="2" class="table-header">
  96     <table border="0" cellpadding="0" cellspacing="0" width="100%">
  97       <tr valign="top">
  98         <td align="left"><span class="table-header">Instance Methods</span></td>
  99         <td align="right" valign="top"
 100          ><span class="options">[<a href="#section-InstanceMethods"
 101          class="privatelink" onclick="toggle_private();"
 102          >hide private</a>]</span></td>
 103       </tr>
 104     </table>
 105   </td>
 106 </tr>
 107 <tr>
 108     <td width="15%" align="right" valign="top" class="summary">
 109       <span class="summary-type">&nbsp;</span>
 110     </td><td class="summary">
 111       <table width="100%" cellpadding="0" cellspacing="0" border="0">
 112         <tr>
 113           <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>,
 114         <span class="summary-sig-arg">_path</span>,
 115         <span class="summary-sig-arg">**_variables</span>)</span><br />
 116       Evaluate an XPath expression on the document.</td>
 117           <td align="right" valign="top">
 118
 119
 120           </td>
 121         </tr>
 122       </table>
 123
 124     </td>
 125   </tr>
 126 <tr>
 127     <td width="15%" align="right" valign="top" class="summary">
 128       <span class="summary-type">&nbsp;</span>
 129     </td><td class="summary">
 130       <table width="100%" cellpadding="0" cellspacing="0" border="0">
 131         <tr>
 132           <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>,
 133         <span class="summary-sig-arg">element</span>,
 134         <span class="summary-sig-arg">namespaces</span>=<span class="summary-sig-default">None</span>,
 135         <span class="summary-sig-arg">extensions</span>=<span class="summary-sig-default">None</span>,
 136         <span class="summary-sig-arg">regexp</span>=<span class="summary-sig-default">True</span>,
 137         <span class="summary-sig-arg">smart_strings</span>=<span class="summary-sig-default">True</span>)</span><br />
 138       x.__init__(...) initializes x; see help(type(x)) for signature</td>
 139           <td align="right" valign="top">
 140
 141
 142           </td>
 143         </tr>
 144       </table>
 145
 146     </td>
 147   </tr>
 148 <tr>
 149     <td width="15%" align="right" valign="top" class="summary">
 150       <span class="summary-type">a new object with type S, a subtype of T</span>
 151     </td><td class="summary">
 152       <table width="100%" cellpadding="0" cellspacing="0" border="0">
 153         <tr>
 154           <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>,
 155         <span class="summary-sig-arg">S</span>,
 156         <span class="summary-sig-arg">...</span>)</span></td>
 157           <td align="right" valign="top">
 158
 159
 160           </td>
 161         </tr>
 162       </table>
 163
 164     </td>
 165   </tr>
 166 <tr>
 167     <td width="15%" align="right" valign="top" class="summary">
 168       <span class="summary-type">&nbsp;</span>
 169     </td><td class="summary">
 170       <table width="100%" cellpadding="0" cellspacing="0" border="0">
 171         <tr>
 172           <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 />
 173       Register a namespace with the XPath context.</td>
 174           <td align="right" valign="top">
 175
 176
 177           </td>
 178         </tr>
 179       </table>
 180
 181     </td>
 182   </tr>
 183 <tr>
 184     <td width="15%" align="right" valign="top" class="summary">
 185       <span class="summary-type">&nbsp;</span>
 186     </td><td class="summary">
 187       <table width="100%" cellpadding="0" cellspacing="0" border="0">
 188         <tr>
 189           <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 />
 190       Register a prefix -&gt; uri dict.</td>
 191           <td align="right" valign="top">
 192
 193
 194           </td>
 195         </tr>
 196       </table>
 197
 198     </td>
 199   </tr>
 200   <tr>
 201     <td colspan="2" class="summary">
 202     <p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._XPathEvaluatorBase-class.html" onclick="show_private();">_XPathEvaluatorBase</a></code></b>:
 203       <code><a href="lxml.etree._XPathEvaluatorBase-class.html#evaluate">evaluate</a></code>
 204       </p>
 205     <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
 206       <code>__delattr__</code>,
 207       <code>__format__</code>,
 208       <code>__getattribute__</code>,
 209       <code>__hash__</code>,
 210       <code>__reduce__</code>,
 211       <code>__reduce_ex__</code>,
 212       <code>__repr__</code>,
 213       <code>__setattr__</code>,
 214       <code>__sizeof__</code>,
 215       <code>__str__</code>,
 216       <code>__subclasshook__</code>
 217       </p>
 218     </td>
 219   </tr>
 220 </table>
 221 <!-- ==================== PROPERTIES ==================== -->
 222 <a name="section-Properties"></a>
 223 <table class="summary" border="1" cellpadding="3"
 224        cellspacing="0" width="100%" bgcolor="white">
 225 <tr bgcolor="#70b0f0" class="table-header">
 226   <td colspan="2" class="table-header">
 227     <table border="0" cellpadding="0" cellspacing="0" width="100%">
 228       <tr valign="top">
 229         <td align="left"><span class="table-header">Properties</span></td>
 230         <td align="right" valign="top"
 231          ><span class="options">[<a href="#section-Properties"
 232          class="privatelink" onclick="toggle_private();"
 233          >hide private</a>]</span></td>
 234       </tr>
 235     </table>
 236   </td>
 237 </tr>
 238   <tr>
 239     <td colspan="2" class="summary">
 240     <p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._XPathEvaluatorBase-class.html" onclick="show_private();">_XPathEvaluatorBase</a></code></b>:
 241       <code><a href="lxml.etree._XPathEvaluatorBase-class.html#error_log">error_log</a></code>
 242       </p>
 243     <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
 244       <code>__class__</code>
 245       </p>
 246     </td>
 247   </tr>
 248 </table>
 249 <!-- ==================== METHOD DETAILS ==================== -->
 250 <a name="section-MethodDetails"></a>
 251 <table class="details" border="1" cellpadding="3"
 252        cellspacing="0" width="100%" bgcolor="white">
 253 <tr bgcolor="#70b0f0" class="table-header">
 254   <td colspan="2" class="table-header">
 255     <table border="0" cellpadding="0" cellspacing="0" width="100%">
 256       <tr valign="top">
 257         <td align="left"><span class="table-header">Method Details</span></td>
 258         <td align="right" valign="top"
 259          ><span class="options">[<a href="#section-MethodDetails"
 260          class="privatelink" onclick="toggle_private();"
 261          >hide private</a>]</span></td>
 262       </tr>
 263     </table>
 264   </td>
 265 </tr>
 266 </table>
 267 <a name="__call__"></a>
 268 <div>
 269 <table class="details" border="1" cellpadding="3"
 270        cellspacing="0" width="100%" bgcolor="white">
 271 <tr><td>
 272   <table width="100%" cellpadding="0" cellspacing="0" border="0">
 273   <tr valign="top"><td>
 274   <h3 class="epydoc"><span class="sig"><span class="sig-name">__call__</span>(<span class="sig-arg">self</span>,
 275         <span class="sig-arg">_path</span>,
 276         <span class="sig-arg">**_variables</span>)</span>
 277     <br /><em class="fname">(Call operator)</em>
 278   </h3>
 279   </td><td align="right" valign="top"
 280     >&nbsp;
 281     </td>
 282   </tr></table>
 283
 284   <p>Evaluate an XPath expression on the document.</p>
 285 <p>Variables may be provided as keyword arguments.  Note that namespaces
 286 are currently not supported for variables.</p>
 287 <p>Absolute XPath expressions (starting with '/') will be evaluated
 288 against the ElementTree as returned by getroottree().</p>
 289   <dl class="fields">
 290   </dl>
 291 </td></tr></table>
 292 </div>
 293 <a name="__init__"></a>
 294 <div>
 295 <table class="details" border="1" cellpadding="3"
 296        cellspacing="0" width="100%" bgcolor="white">
 297 <tr><td>
 298   <table width="100%" cellpadding="0" cellspacing="0" border="0">
 299   <tr valign="top"><td>
 300   <h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
 301         <span class="sig-arg">element</span>,
 302         <span class="sig-arg">namespaces</span>=<span class="sig-default">None</span>,
 303         <span class="sig-arg">extensions</span>=<span class="sig-default">None</span>,
 304         <span class="sig-arg">regexp</span>=<span class="sig-default">True</span>,
 305         <span class="sig-arg">smart_strings</span>=<span class="sig-default">True</span>)</span>
 306     <br /><em class="fname">(Constructor)</em>
 307   </h3>
 308   </td><td align="right" valign="top"
 309     >&nbsp;
 310     </td>
 311   </tr></table>
 312
 313   x.__init__(...) initializes x; see help(type(x)) for signature
 314   <dl class="fields">
 315     <dt>Overrides:
 316         object.__init__
 317     </dt>
 318   </dl>
 319 </td></tr></table>
 320 </div>
 321 <a name="__new__"></a>
 322 <div>
 323 <table class="details" border="1" cellpadding="3"
 324        cellspacing="0" width="100%" bgcolor="white">
 325 <tr><td>
 326   <table width="100%" cellpadding="0" cellspacing="0" border="0">
 327   <tr valign="top"><td>
 328   <h3 class="epydoc"><span class="sig"><span class="sig-name">__new__</span>(<span class="sig-arg">T</span>,
 329         <span class="sig-arg">S</span>,
 330         <span class="sig-arg">...</span>)</span>
 331   </h3>
 332   </td><td align="right" valign="top"
 333     >&nbsp;
 334     </td>
 335   </tr></table>
 336
 337
 338   <dl class="fields">
 339     <dt>Returns: a new object with type S, a subtype of T</dt>
 340     <dt>Overrides:
 341         object.__new__
 342     </dt>
 343   </dl>
 344 </td></tr></table>
 345 </div>
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