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<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom</span></code> — The Document Object Model API</a><ul>
<li><a class="reference internal" href="#module-contents">Module Contents</a></li>
<li><a class="reference internal" href="#objects-in-the-dom">Objects in the DOM</a><ul>
<li><a class="reference internal" href="#domimplementation-objects">DOMImplementation Objects</a></li>
<li><a class="reference internal" href="#node-objects">Node Objects</a></li>
<li><a class="reference internal" href="#nodelist-objects">NodeList Objects</a></li>
<li><a class="reference internal" href="#documenttype-objects">DocumentType Objects</a></li>
<li><a class="reference internal" href="#document-objects">Document Objects</a></li>
<li><a class="reference internal" href="#element-objects">Element Objects</a></li>
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<li><a class="reference internal" href="#namednodemap-objects">NamedNodeMap Objects</a></li>
<li><a class="reference internal" href="#documentfragment-objects">DocumentFragment Objects</a></li>
<li><a class="reference internal" href="#characterdata-objects">CharacterData Objects</a></li>
<li><a class="reference internal" href="#comment-objects">Comment Objects</a></li>
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<li><a class="reference internal" href="#processinginstruction-objects">ProcessingInstruction Objects</a></li>
<li><a class="reference internal" href="#entity-objects">Entity Objects</a></li>
<li><a class="reference internal" href="#notation-objects">Notation Objects</a></li>
<li><a class="reference internal" href="#exceptions">Exceptions</a></li>
</ul>
</li>
<li><a class="reference internal" href="#conformance">Conformance</a><ul>
<li><a class="reference internal" href="#type-mapping">Type Mapping</a></li>
<li><a class="reference internal" href="#accessor-methods">Accessor Methods</a></li>
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<section id="module-xml.dom">
<span id="xml-dom-the-document-object-model-api"></span><h1><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom</span></code> — The Document Object Model API<a class="headerlink" href="#module-xml.dom" title="Link to this heading"></a></h1>
<p><strong>Source code:</strong> <a class="extlink-source reference external" href="https://github.com/python/cpython/tree/3.15/Lib/xml/dom/__init__.py">Lib/xml/dom/__init__.py</a></p>
<hr class="docutils" />
<p>The Document Object Model, or “DOM,” is a cross-language API from the World Wide
Web Consortium (W3C) for accessing and modifying XML documents. A DOM
implementation presents an XML document as a tree structure, or allows client
code to build such a structure from scratch. It then gives access to the
structure through a set of objects which provided well-known interfaces.</p>
<p>The DOM is extremely useful for random-access applications. SAX only allows you
a view of one bit of the document at a time. If you are looking at one SAX
element, you have no access to another. If you are looking at a text node, you
have no access to a containing element. When you write a SAX application, you
need to keep track of your program’s position in the document somewhere in your
own code. SAX does not do it for you. Also, if you need to look ahead in the
XML document, you are just out of luck.</p>
<p>Some applications are simply impossible in an event driven model with no access
to a tree. Of course you could build some sort of tree yourself in SAX events,
but the DOM allows you to avoid writing that code. The DOM is a standard tree
representation for XML data.</p>
<p>The Document Object Model is being defined by the W3C in stages, or “levels” in
their terminology. The Python mapping of the API is substantially based on the
DOM Level 2 recommendation.</p>
<p>DOM applications typically start by parsing some XML into a DOM. How this is
accomplished is not covered at all by DOM Level 1, and Level 2 provides only
limited improvements: There is a <a class="reference internal" href="#xml.dom.DOMImplementation" title="xml.dom.DOMImplementation"><code class="xref py py-class docutils literal notranslate"><span class="pre">DOMImplementation</span></code></a> object class which
provides access to <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> creation methods, but no way to access an
XML reader/parser/Document builder in an implementation-independent way. There
is also no well-defined way to access these methods without an existing
<code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code> object. In Python, each DOM implementation will provide a
function <a class="reference internal" href="#xml.dom.getDOMImplementation" title="xml.dom.getDOMImplementation"><code class="xref py py-func docutils literal notranslate"><span class="pre">getDOMImplementation()</span></code></a>. DOM Level 3 adds a Load/Store
specification, which defines an interface to the reader, but this is not yet
available in the Python standard library.</p>
<p>Once you have a DOM document object, you can access the parts of your XML
document through its properties and methods. These properties are defined in
the DOM specification; this portion of the reference manual describes the
interpretation of the specification in Python.</p>
<p>The specification provided by the W3C defines the DOM API for Java, ECMAScript,
and OMG IDL. The Python mapping defined here is based in large part on the IDL
version of the specification, but strict compliance is not required (though
implementations are free to support the strict mapping from IDL). See section
<a class="reference internal" href="#dom-conformance"><span class="std std-ref">Conformance</span></a> for a detailed discussion of mapping requirements.</p>
<div class="admonition seealso">
<p class="admonition-title">See also</p>
<dl class="simple">
<dt><a class="reference external" href="https://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/">Document Object Model (DOM) Level 2 Specification</a></dt><dd><p>The W3C recommendation upon which the Python DOM API is based.</p>
</dd>
<dt><a class="reference external" href="https://www.w3.org/TR/REC-DOM-Level-1/">Document Object Model (DOM) Level 1 Specification</a></dt><dd><p>The W3C recommendation for the DOM supported by <a class="reference internal" href="xml.dom.minidom.html#module-xml.dom.minidom" title="xml.dom.minidom: Minimal Document Object Model (DOM) implementation."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom.minidom</span></code></a>.</p>
</dd>
<dt><a class="reference external" href="https://www.omg.org/spec/PYTH/1.2/PDF">Python Language Mapping Specification</a></dt><dd><p>This specifies the mapping from OMG IDL to Python.</p>
</dd>
</dl>
</div>
<section id="module-contents">
<h2>Module Contents<a class="headerlink" href="#module-contents" title="Link to this heading"></a></h2>
<p>The <code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom</span></code> contains the following functions:</p>
<dl class="py function">
<dt class="sig sig-object py" id="xml.dom.registerDOMImplementation">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">registerDOMImplementation</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">factory</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.registerDOMImplementation" title="Link to this definition"></a></dt>
<dd><p>Register the <em>factory</em> function with the name <em>name</em>. The factory function
should return an object which implements the <a class="reference internal" href="#xml.dom.DOMImplementation" title="xml.dom.DOMImplementation"><code class="xref py py-class docutils literal notranslate"><span class="pre">DOMImplementation</span></code></a>
interface. The factory function can return the same object every time, or a new
one for each call, as appropriate for the specific implementation (e.g. if that
implementation supports some customization).</p>
</dd></dl>
<dl class="py function">
<dt class="sig sig-object py" id="xml.dom.getDOMImplementation">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">getDOMImplementation</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">features</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">()</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.getDOMImplementation" title="Link to this definition"></a></dt>
<dd><p>Return a suitable DOM implementation. The <em>name</em> is either well-known, the
module name of a DOM implementation, or <code class="docutils literal notranslate"><span class="pre">None</span></code>. If it is not <code class="docutils literal notranslate"><span class="pre">None</span></code>, imports
the corresponding module and returns a <a class="reference internal" href="#xml.dom.DOMImplementation" title="xml.dom.DOMImplementation"><code class="xref py py-class docutils literal notranslate"><span class="pre">DOMImplementation</span></code></a> object if the
import succeeds. If no name is given, and if the environment variable
<code class="xref std std-envvar docutils literal notranslate"><span class="pre">PYTHON_DOM</span></code> is set, this variable is used to find the implementation.
The only well-known name in the standard library is <code class="docutils literal notranslate"><span class="pre">'minidom'</span></code>,
for <a class="reference internal" href="xml.dom.minidom.html#module-xml.dom.minidom" title="xml.dom.minidom: Minimal Document Object Model (DOM) implementation."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom.minidom</span></code></a>.</p>
<p>If name is not given, this examines the available implementations to find one
with the required feature set. If no implementation can be found, raise an
<a class="reference internal" href="../builtins/exceptions.html#ImportError" title="ImportError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ImportError</span></code></a>. The features list must be a sequence of <code class="docutils literal notranslate"><span class="pre">(feature,</span>
<span class="pre">version)</span></code> pairs which are passed to the <a class="reference internal" href="#xml.dom.DOMImplementation.hasFeature" title="xml.dom.DOMImplementation.hasFeature"><code class="xref py py-meth docutils literal notranslate"><span class="pre">hasFeature()</span></code></a>
method on available <a class="reference internal" href="#xml.dom.DOMImplementation" title="xml.dom.DOMImplementation"><code class="xref py py-class docutils literal notranslate"><span class="pre">DOMImplementation</span></code></a> objects.</p>
</dd></dl>
<p>Some convenience constants are also provided:</p>
<dl class="py data">
<dt class="sig sig-object py" id="xml.dom.EMPTY_NAMESPACE">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">EMPTY_NAMESPACE</span></span><a class="headerlink" href="#xml.dom.EMPTY_NAMESPACE" title="Link to this definition"></a></dt>
<dd><p>The value used to indicate that no namespace is associated with a node in the
DOM. This is typically found as the <a class="reference internal" href="#xml.dom.Node.namespaceURI" title="xml.dom.Node.namespaceURI"><code class="xref py py-attr docutils literal notranslate"><span class="pre">namespaceURI</span></code></a> of a node, or
used as the <em>namespaceURI</em> parameter to a namespaces-specific method.</p>
</dd></dl>
<dl class="py data">
<dt class="sig sig-object py" id="xml.dom.XML_NAMESPACE">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">XML_NAMESPACE</span></span><a class="headerlink" href="#xml.dom.XML_NAMESPACE" title="Link to this definition"></a></dt>
<dd><p>The namespace URI associated with the reserved prefix <code class="docutils literal notranslate"><span class="pre">xml</span></code>, as defined by
<a class="reference external" href="https://www.w3.org/TR/REC-xml-names/">Namespaces in XML</a> (section 4).</p>
</dd></dl>
<dl class="py data">
<dt class="sig sig-object py" id="xml.dom.XMLNS_NAMESPACE">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">XMLNS_NAMESPACE</span></span><a class="headerlink" href="#xml.dom.XMLNS_NAMESPACE" title="Link to this definition"></a></dt>
<dd><p>The namespace URI for namespace declarations, as defined by <a class="reference external" href="https://www.w3.org/TR/DOM-Level-2-Core/core.html">Document Object
Model (DOM) Level 2 Core Specification</a> (section 1.1.8).</p>
</dd></dl>
<dl class="py data">
<dt class="sig sig-object py" id="xml.dom.XHTML_NAMESPACE">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">XHTML_NAMESPACE</span></span><a class="headerlink" href="#xml.dom.XHTML_NAMESPACE" title="Link to this definition"></a></dt>
<dd><p>The URI of the XHTML namespace as defined by <a class="reference external" href="https://www.w3.org/TR/xhtml1/">XHTML 1.0: The Extensible
HyperText Markup Language</a> (section 3.1.1).</p>
</dd></dl>
<p>In addition, <code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom</span></code> contains a base <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a> class and the DOM
exception classes. The <code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code> class provided by this module does not
implement any of the methods or attributes defined by the DOM specification;
concrete DOM implementations must provide those. The <code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code> class
provided as part of this module does provide the constants used for the
<a class="reference internal" href="#xml.dom.Node.nodeType" title="xml.dom.Node.nodeType"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nodeType</span></code></a> attribute on concrete <code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code> objects; they are located
within the class rather than at the module level to conform with the DOM
specifications.</p>
</section>
<section id="objects-in-the-dom">
<span id="dom-objects"></span><h2>Objects in the DOM<a class="headerlink" href="#objects-in-the-dom" title="Link to this heading"></a></h2>
<p>The definitive documentation for the DOM is the DOM specification from the W3C.</p>
<p>The names documented in this section are DOM interfaces.
With the exception of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a> and the exception classes,
they are not provided by the <code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom</span></code> module itself,
but by concrete DOM implementations, such as <a class="reference internal" href="xml.dom.minidom.html#module-xml.dom.minidom" title="xml.dom.minidom: Minimal Document Object Model (DOM) implementation."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom.minidom</span></code></a>.</p>
<p>Note that DOM attributes may also be manipulated as nodes instead of as simple
strings. It is fairly rare that you must do this, however, so this usage is not
yet documented.</p>
<table class="docutils align-default">
<thead>
<tr class="row-odd"><th class="head"><p>Interface</p></th>
<th class="head"><p>Section</p></th>
<th class="head"><p>Purpose</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.DOMImplementation" title="xml.dom.DOMImplementation"><code class="xref py py-class docutils literal notranslate"><span class="pre">DOMImplementation</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-implementation-objects"><span class="std std-ref">DOMImplementation Objects</span></a></p></td>
<td><p>Interface to the underlying
implementation.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-node-objects"><span class="std std-ref">Node Objects</span></a></p></td>
<td><p>Base interface for most objects
in a document.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.NodeList" title="xml.dom.NodeList"><code class="xref py py-class docutils literal notranslate"><span class="pre">NodeList</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-nodelist-objects"><span class="std std-ref">NodeList Objects</span></a></p></td>
<td><p>Interface for a sequence of
nodes.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-documenttype-objects"><span class="std std-ref">DocumentType Objects</span></a></p></td>
<td><p>Information about the
declarations needed to process
a document.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-document-objects"><span class="std std-ref">Document Objects</span></a></p></td>
<td><p>Object which represents an
entire document.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-element-objects"><span class="std std-ref">Element Objects</span></a></p></td>
<td><p>Element nodes in the document
hierarchy.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.Attr" title="xml.dom.Attr"><code class="xref py py-class docutils literal notranslate"><span class="pre">Attr</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-attr-objects"><span class="std std-ref">Attr Objects</span></a></p></td>
<td><p>Attribute value nodes on
element nodes.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.Comment" title="xml.dom.Comment"><code class="xref py py-class docutils literal notranslate"><span class="pre">Comment</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-comment-objects"><span class="std std-ref">Comment Objects</span></a></p></td>
<td><p>Representation of comments in
the source document.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-text-objects"><span class="std std-ref">Text and CDATASection Objects</span></a></p></td>
<td><p>Nodes containing textual
content from the document.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.ProcessingInstruction" title="xml.dom.ProcessingInstruction"><code class="xref py py-class docutils literal notranslate"><span class="pre">ProcessingInstruction</span></code></a></p></td>
<td><p><a class="reference internal" href="#dom-pi-objects"><span class="std std-ref">ProcessingInstruction Objects</span></a></p></td>
<td><p>Processing instruction
representation.</p></td>
</tr>
</tbody>
</table>
<p>An additional section describes the exceptions defined for working with the DOM
in Python.</p>
<section id="domimplementation-objects">
<span id="dom-implementation-objects"></span><h3>DOMImplementation Objects<a class="headerlink" href="#domimplementation-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.DOMImplementation">The <a class="reference internal" href="#xml.dom.DOMImplementation" title="xml.dom.DOMImplementation"><code class="xref py py-class docutils literal notranslate"><span class="pre">DOMImplementation</span></code></a> interface provides a way for applications to
determine the availability of particular features in the DOM they are using.
DOM Level 2 added the ability to create new <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> and
<a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a> objects using the <code class="xref py py-class docutils literal notranslate"><span class="pre">DOMImplementation</span></code> as well.</p>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.DOMImplementation.hasFeature">
<span class="sig-prename descclassname"><span class="pre">DOMImplementation.</span></span><span class="sig-name descname"><span class="pre">hasFeature</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">feature</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">version</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.DOMImplementation.hasFeature" title="Link to this definition"></a></dt>
<dd><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the feature identified by the pair of strings <em>feature</em> and
<em>version</em> is implemented.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.DOMImplementation.createDocument">
<span class="sig-prename descclassname"><span class="pre">DOMImplementation.</span></span><span class="sig-name descname"><span class="pre">createDocument</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceUri</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">qualifiedName</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">doctype</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.DOMImplementation.createDocument" title="Link to this definition"></a></dt>
<dd><p>Return a new <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> object (the root of the DOM), with a child
<a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> object having the given <em>namespaceUri</em> and <em>qualifiedName</em>. The
<em>doctype</em> must be a <a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a> object created by
<a class="reference internal" href="#xml.dom.DOMImplementation.createDocumentType" title="xml.dom.DOMImplementation.createDocumentType"><code class="xref py py-meth docutils literal notranslate"><span class="pre">createDocumentType()</span></code></a>, or <code class="docutils literal notranslate"><span class="pre">None</span></code>. In the Python DOM API, the first two
arguments can also be <code class="docutils literal notranslate"><span class="pre">None</span></code> in order to indicate that no <code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code>
child is to be created.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.DOMImplementation.createDocumentType">
<span class="sig-prename descclassname"><span class="pre">DOMImplementation.</span></span><span class="sig-name descname"><span class="pre">createDocumentType</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">qualifiedName</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">publicId</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">systemId</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.DOMImplementation.createDocumentType" title="Link to this definition"></a></dt>
<dd><p>Return a new <a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a> object that encapsulates the given
<em>qualifiedName</em>, <em>publicId</em>, and <em>systemId</em> strings, representing the
information contained in an XML document type declaration.</p>
</dd></dl>
</section>
<section id="node-objects">
<span id="dom-node-objects"></span><h3>Node Objects<a class="headerlink" href="#node-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.Node">All of the components of an XML document are subclasses of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>.</p>
<p>Only nodes of the following types can have children,
and only children of the listed types:</p>
<dl class="simple">
<dt><a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a></dt><dd><p>at most one <a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a>, at most one <a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a>,
<a class="reference internal" href="#xml.dom.ProcessingInstruction" title="xml.dom.ProcessingInstruction"><code class="xref py py-class docutils literal notranslate"><span class="pre">ProcessingInstruction</span></code></a> and <a class="reference internal" href="#xml.dom.Comment" title="xml.dom.Comment"><code class="xref py py-class docutils literal notranslate"><span class="pre">Comment</span></code></a></p>
</dd>
<dt><a class="reference internal" href="#xml.dom.DocumentFragment" title="xml.dom.DocumentFragment"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentFragment</span></code></a> and <a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a></dt><dd><p><a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a>, <a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a>, <a class="reference internal" href="#xml.dom.CDATASection" title="xml.dom.CDATASection"><code class="xref py py-class docutils literal notranslate"><span class="pre">CDATASection</span></code></a>,
<a class="reference internal" href="#xml.dom.ProcessingInstruction" title="xml.dom.ProcessingInstruction"><code class="xref py py-class docutils literal notranslate"><span class="pre">ProcessingInstruction</span></code></a> and <a class="reference internal" href="#xml.dom.Comment" title="xml.dom.Comment"><code class="xref py py-class docutils literal notranslate"><span class="pre">Comment</span></code></a></p>
</dd>
<dt><a class="reference internal" href="#xml.dom.Attr" title="xml.dom.Attr"><code class="xref py py-class docutils literal notranslate"><span class="pre">Attr</span></code></a></dt><dd><p><a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a></p>
</dd>
</dl>
<p>Nodes of other types cannot have children.
Inserting a child of a not allowed type raises <a class="reference internal" href="#xml.dom.HierarchyRequestErr" title="xml.dom.HierarchyRequestErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">HierarchyRequestErr</span></code></a>.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.nodeType">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">nodeType</span></span><a class="headerlink" href="#xml.dom.Node.nodeType" title="Link to this definition"></a></dt>
<dd><p>An integer representing the node type. Symbolic constants for the types are on
the <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a> object.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py data">
<dt class="sig sig-object py" id="xml.dom.Node.ELEMENT_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">ELEMENT_NODE</span></span><a class="headerlink" href="#xml.dom.Node.ELEMENT_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.ATTRIBUTE_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">ATTRIBUTE_NODE</span></span><a class="headerlink" href="#xml.dom.Node.ATTRIBUTE_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.TEXT_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">TEXT_NODE</span></span><a class="headerlink" href="#xml.dom.Node.TEXT_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.CDATA_SECTION_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">CDATA_SECTION_NODE</span></span><a class="headerlink" href="#xml.dom.Node.CDATA_SECTION_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.ENTITY_REFERENCE_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">ENTITY_REFERENCE_NODE</span></span><a class="headerlink" href="#xml.dom.Node.ENTITY_REFERENCE_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.ENTITY_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">ENTITY_NODE</span></span><a class="headerlink" href="#xml.dom.Node.ENTITY_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.PROCESSING_INSTRUCTION_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">PROCESSING_INSTRUCTION_NODE</span></span><a class="headerlink" href="#xml.dom.Node.PROCESSING_INSTRUCTION_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.COMMENT_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">COMMENT_NODE</span></span><a class="headerlink" href="#xml.dom.Node.COMMENT_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.DOCUMENT_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">DOCUMENT_NODE</span></span><a class="headerlink" href="#xml.dom.Node.DOCUMENT_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.DOCUMENT_TYPE_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">DOCUMENT_TYPE_NODE</span></span><a class="headerlink" href="#xml.dom.Node.DOCUMENT_TYPE_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.DOCUMENT_FRAGMENT_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">DOCUMENT_FRAGMENT_NODE</span></span><a class="headerlink" href="#xml.dom.Node.DOCUMENT_FRAGMENT_NODE" title="Link to this definition"></a></dt>
<dt class="sig sig-object py" id="xml.dom.Node.NOTATION_NODE">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">NOTATION_NODE</span></span><a class="headerlink" href="#xml.dom.Node.NOTATION_NODE" title="Link to this definition"></a></dt>
<dd><p>Integer constants for the possible values
of the <a class="reference internal" href="#xml.dom.Node.nodeType" title="xml.dom.Node.nodeType"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nodeType</span></code></a> attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.parentNode">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">parentNode</span></span><a class="headerlink" href="#xml.dom.Node.parentNode" title="Link to this definition"></a></dt>
<dd><p>The parent of the current node, or <code class="docutils literal notranslate"><span class="pre">None</span></code> for the document node. The value is
always a <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a> object or <code class="docutils literal notranslate"><span class="pre">None</span></code>. For <a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> nodes, this
will be the parent element, except for the root element, in which case it will
be the <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> object. For <a class="reference internal" href="#xml.dom.Attr" title="xml.dom.Attr"><code class="xref py py-class docutils literal notranslate"><span class="pre">Attr</span></code></a> nodes, this is always
<code class="docutils literal notranslate"><span class="pre">None</span></code>. This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.attributes">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">attributes</span></span><a class="headerlink" href="#xml.dom.Node.attributes" title="Link to this definition"></a></dt>
<dd><p>A <a class="reference internal" href="#xml.dom.NamedNodeMap" title="xml.dom.NamedNodeMap"><code class="xref py py-class docutils literal notranslate"><span class="pre">NamedNodeMap</span></code></a> of attribute objects. Only elements have actual values
for this; others provide <code class="docutils literal notranslate"><span class="pre">None</span></code> for this attribute. This is a read-only
attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.previousSibling">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">previousSibling</span></span><a class="headerlink" href="#xml.dom.Node.previousSibling" title="Link to this definition"></a></dt>
<dd><p>The node that immediately precedes this one with the same parent. For
instance the element with an end-tag that comes just before the <em>self</em>
element’s start-tag. Of course, XML documents are made up of more than just
elements so the previous sibling could be text, a comment, or something else.
If this node is the first child of the parent, this attribute will be
<code class="docutils literal notranslate"><span class="pre">None</span></code>. This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.nextSibling">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">nextSibling</span></span><a class="headerlink" href="#xml.dom.Node.nextSibling" title="Link to this definition"></a></dt>
<dd><p>The node that immediately follows this one with the same parent. See also
<a class="reference internal" href="#xml.dom.Node.previousSibling" title="xml.dom.Node.previousSibling"><code class="xref py py-attr docutils literal notranslate"><span class="pre">previousSibling</span></code></a>. If this is the last child of the parent, this
attribute will be <code class="docutils literal notranslate"><span class="pre">None</span></code>. This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.childNodes">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">childNodes</span></span><a class="headerlink" href="#xml.dom.Node.childNodes" title="Link to this definition"></a></dt>
<dd><p>A <a class="reference internal" href="#xml.dom.NodeList" title="xml.dom.NodeList"><code class="xref py py-class docutils literal notranslate"><span class="pre">NodeList</span></code></a> of the children of this node.
If the node has no children, the list is empty.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.firstChild">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">firstChild</span></span><a class="headerlink" href="#xml.dom.Node.firstChild" title="Link to this definition"></a></dt>
<dd><p>The first child of the node, if there are any, or <code class="docutils literal notranslate"><span class="pre">None</span></code>. This is a read-only
attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.lastChild">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">lastChild</span></span><a class="headerlink" href="#xml.dom.Node.lastChild" title="Link to this definition"></a></dt>
<dd><p>The last child of the node, if there are any, or <code class="docutils literal notranslate"><span class="pre">None</span></code>. This is a read-only
attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.localName">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">localName</span></span><a class="headerlink" href="#xml.dom.Node.localName" title="Link to this definition"></a></dt>
<dd><p>The part of the <a class="reference internal" href="#xml.dom.Element.tagName" title="xml.dom.Element.tagName"><code class="xref py py-attr docutils literal notranslate"><span class="pre">tagName</span></code></a> following the colon if there is one,
else the entire <code class="xref py py-attr docutils literal notranslate"><span class="pre">tagName</span></code>. The value is a string.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.prefix">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">prefix</span></span><a class="headerlink" href="#xml.dom.Node.prefix" title="Link to this definition"></a></dt>
<dd><p>The part of the <a class="reference internal" href="#xml.dom.Element.tagName" title="xml.dom.Element.tagName"><code class="xref py py-attr docutils literal notranslate"><span class="pre">tagName</span></code></a> preceding the colon if there is one,
else the empty string. The value is a string, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.namespaceURI">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">namespaceURI</span></span><a class="headerlink" href="#xml.dom.Node.namespaceURI" title="Link to this definition"></a></dt>
<dd><p>The namespace associated with the element name. This will be a string or
<code class="docutils literal notranslate"><span class="pre">None</span></code>. This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.ownerDocument">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">ownerDocument</span></span><a class="headerlink" href="#xml.dom.Node.ownerDocument" title="Link to this definition"></a></dt>
<dd><p>The <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> object to which this node belongs, or <code class="docutils literal notranslate"><span class="pre">None</span></code>
for a document itself.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.isSupported">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">isSupported</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">feature</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">version</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.isSupported" title="Link to this definition"></a></dt>
<dd><p>Return whether the DOM implementation supports a particular <em>feature</em>,
as <a class="reference internal" href="#xml.dom.DOMImplementation.hasFeature" title="xml.dom.DOMImplementation.hasFeature"><code class="xref py py-meth docutils literal notranslate"><span class="pre">DOMImplementation.hasFeature()</span></code></a> does.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.setUserData">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">setUserData</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">handler</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.setUserData" title="Link to this definition"></a></dt>
<dd><p>Associate <em>data</em> with <em>key</em> on this node and return the data previously
associated with <em>key</em>, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.
If <em>data</em> is <code class="docutils literal notranslate"><span class="pre">None</span></code>, the association is removed.
<em>handler</em> is called when the node is cloned, imported, renamed or deleted;
pass <code class="docutils literal notranslate"><span class="pre">None</span></code> if no notification is needed.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.getUserData">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">getUserData</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">key</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.getUserData" title="Link to this definition"></a></dt>
<dd><p>Return the data associated with <em>key</em> on this node
by <a class="reference internal" href="#xml.dom.Node.setUserData" title="xml.dom.Node.setUserData"><code class="xref py py-meth docutils literal notranslate"><span class="pre">setUserData()</span></code></a>, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.nodeName">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">nodeName</span></span><a class="headerlink" href="#xml.dom.Node.nodeName" title="Link to this definition"></a></dt>
<dd><p>The name of this node, depending on its type; see the table below.
You can always get the information you would get here from another
property such as the <a class="reference internal" href="#xml.dom.Element.tagName" title="xml.dom.Element.tagName"><code class="xref py py-attr docutils literal notranslate"><span class="pre">tagName</span></code></a> property for elements or the
<a class="reference internal" href="#xml.dom.Attr.name" title="xml.dom.Attr.name"><code class="xref py py-attr docutils literal notranslate"><span class="pre">name</span></code></a> property for attributes.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Node.nodeValue">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">nodeValue</span></span><a class="headerlink" href="#xml.dom.Node.nodeValue" title="Link to this definition"></a></dt>
<dd><p>The value of this node, depending on its type; see the table below.
The value is a string or <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p>
</dd></dl>
<p>The values of <a class="reference internal" href="#xml.dom.Node.nodeName" title="xml.dom.Node.nodeName"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nodeName</span></code></a> and <a class="reference internal" href="#xml.dom.Node.nodeValue" title="xml.dom.Node.nodeValue"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nodeValue</span></code></a>
for each node type are:</p>
<table class="docutils align-default">
<thead>
<tr class="row-odd"><th class="head"><p>Node type</p></th>
<th class="head"><p>nodeName</p></th>
<th class="head"><p>nodeValue</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.Attr" title="xml.dom.Attr"><code class="xref py py-class docutils literal notranslate"><span class="pre">Attr</span></code></a></p></td>
<td><p><a class="reference internal" href="#xml.dom.Attr.name" title="xml.dom.Attr.name"><code class="xref py py-attr docutils literal notranslate"><span class="pre">name</span></code></a></p></td>
<td><p><a class="reference internal" href="#xml.dom.Attr.value" title="xml.dom.Attr.value"><code class="xref py py-attr docutils literal notranslate"><span class="pre">value</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.CDATASection" title="xml.dom.CDATASection"><code class="xref py py-class docutils literal notranslate"><span class="pre">CDATASection</span></code></a></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">'#cdata-section'</span></code></p></td>
<td><p>the content</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.Comment" title="xml.dom.Comment"><code class="xref py py-class docutils literal notranslate"><span class="pre">Comment</span></code></a></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">'#comment'</span></code></p></td>
<td><p>the content</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">'#document'</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.DocumentFragment" title="xml.dom.DocumentFragment"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentFragment</span></code></a></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">'#document-fragment'</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a></p></td>
<td><p><a class="reference internal" href="#xml.dom.DocumentType.name" title="xml.dom.DocumentType.name"><code class="xref py py-attr docutils literal notranslate"><span class="pre">name</span></code></a></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a></p></td>
<td><p><a class="reference internal" href="#xml.dom.Element.tagName" title="xml.dom.Element.tagName"><code class="xref py py-attr docutils literal notranslate"><span class="pre">tagName</span></code></a></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.Entity" title="xml.dom.Entity"><code class="xref py py-class docutils literal notranslate"><span class="pre">Entity</span></code></a></p></td>
<td><p>the name of the entity</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.Notation" title="xml.dom.Notation"><code class="xref py py-class docutils literal notranslate"><span class="pre">Notation</span></code></a></p></td>
<td><p>the name of the notation</p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#xml.dom.ProcessingInstruction" title="xml.dom.ProcessingInstruction"><code class="xref py py-class docutils literal notranslate"><span class="pre">ProcessingInstruction</span></code></a></p></td>
<td><p><a class="reference internal" href="#xml.dom.ProcessingInstruction.target" title="xml.dom.ProcessingInstruction.target"><code class="xref py py-attr docutils literal notranslate"><span class="pre">target</span></code></a></p></td>
<td><p><a class="reference internal" href="#xml.dom.ProcessingInstruction.data" title="xml.dom.ProcessingInstruction.data"><code class="xref py py-attr docutils literal notranslate"><span class="pre">data</span></code></a></p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">'#text'</span></code></p></td>
<td><p>the content</p></td>
</tr>
</tbody>
</table>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.hasAttributes">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">hasAttributes</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.hasAttributes" title="Link to this definition"></a></dt>
<dd><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the node has any attributes.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.hasChildNodes">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">hasChildNodes</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.hasChildNodes" title="Link to this definition"></a></dt>
<dd><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the node has any child nodes.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.isSameNode">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">isSameNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">other</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.isSameNode" title="Link to this definition"></a></dt>
<dd><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if <em>other</em> refers to the same node as this node. This is especially
useful for DOM implementations which use any sort of proxy architecture (because
more than one object can refer to the same node).</p>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>This is based on a proposed DOM Level 3 API which is still in the “working
draft” stage, but this particular interface appears uncontroversial. Changes
from the W3C will not necessarily affect this method in the Python DOM interface
(though any new W3C API for this would also be supported).</p>
</div>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.appendChild">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">appendChild</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">newChild</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.appendChild" title="Link to this definition"></a></dt>
<dd><p>Add a new child node to this node at the end of the list of
children, returning <em>newChild</em>. If the node was already in
the tree, it is removed first.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.insertBefore">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">insertBefore</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">newChild</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">refChild</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.insertBefore" title="Link to this definition"></a></dt>
<dd><p>Insert a new child node before an existing child. It must be the case that
<em>refChild</em> is a child of this node; if not, <a class="reference internal" href="#xml.dom.NotFoundErr" title="xml.dom.NotFoundErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotFoundErr</span></code></a> is raised.
<em>newChild</em> is returned. If <em>refChild</em> is <code class="docutils literal notranslate"><span class="pre">None</span></code>, it inserts <em>newChild</em> at the
end of the children’s list.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.removeChild">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">removeChild</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">oldChild</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.removeChild" title="Link to this definition"></a></dt>
<dd><p>Remove a child node. <em>oldChild</em> must be a child of this node; if not,
<a class="reference internal" href="#xml.dom.NotFoundErr" title="xml.dom.NotFoundErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotFoundErr</span></code></a> is raised. <em>oldChild</em> is returned on success. If <em>oldChild</em>
will not be used further, its <a class="reference internal" href="xml.dom.minidom.html#xml.dom.minidom.Node.unlink" title="xml.dom.minidom.Node.unlink"><code class="xref py py-meth docutils literal notranslate"><span class="pre">unlink()</span></code></a> method
should be called.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.replaceChild">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">replaceChild</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">newChild</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">oldChild</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.replaceChild" title="Link to this definition"></a></dt>
<dd><p>Replace an existing node with a new node. It must be the case that <em>oldChild</em>
is a child of this node; if not, <a class="reference internal" href="#xml.dom.NotFoundErr" title="xml.dom.NotFoundErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotFoundErr</span></code></a> is raised.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.normalize">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">normalize</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.normalize" title="Link to this definition"></a></dt>
<dd><p>Join adjacent text nodes so that all stretches of text are stored as single
<a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a> instances. This simplifies processing text from a DOM tree for
many applications.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Node.cloneNode">
<span class="sig-prename descclassname"><span class="pre">Node.</span></span><span class="sig-name descname"><span class="pre">cloneNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">deep</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Node.cloneNode" title="Link to this definition"></a></dt>
<dd><p>Clone this node. Setting <em>deep</em> means to clone all child nodes as well. This
returns the clone.</p>
</dd></dl>
</section>
<section id="nodelist-objects">
<span id="dom-nodelist-objects"></span><h3>NodeList Objects<a class="headerlink" href="#nodelist-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.NodeList">A <a class="reference internal" href="#xml.dom.NodeList" title="xml.dom.NodeList"><code class="xref py py-class docutils literal notranslate"><span class="pre">NodeList</span></code></a> represents a sequence of nodes. These objects are used in
two ways in the DOM Core recommendation: an <a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> object provides
one as its list of child nodes, and the <a class="reference internal" href="#xml.dom.Element.getElementsByTagName" title="xml.dom.Element.getElementsByTagName"><code class="xref py py-meth docutils literal notranslate"><span class="pre">getElementsByTagName()</span></code></a>
and <a class="reference internal" href="#xml.dom.Element.getElementsByTagNameNS" title="xml.dom.Element.getElementsByTagNameNS"><code class="xref py py-meth docutils literal notranslate"><span class="pre">getElementsByTagNameNS()</span></code></a> methods of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a> return
objects with this interface to represent query results.</p>
<p><a class="reference internal" href="#xml.dom.NodeList" title="xml.dom.NodeList"><code class="xref py py-class docutils literal notranslate"><span class="pre">NodeList</span></code></a> does <em>not</em> inherit from <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>.</p>
<p>The DOM Level 2 recommendation defines one method and one attribute for these
objects:</p>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.NodeList.item">
<span class="sig-prename descclassname"><span class="pre">NodeList.</span></span><span class="sig-name descname"><span class="pre">item</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">i</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.NodeList.item" title="Link to this definition"></a></dt>
<dd><p>Return the <em>i</em>’th item from the sequence,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if <em>i</em> is out of range.
Negative indices are not supported.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.NodeList.length">
<span class="sig-prename descclassname"><span class="pre">NodeList.</span></span><span class="sig-name descname"><span class="pre">length</span></span><a class="headerlink" href="#xml.dom.NodeList.length" title="Link to this definition"></a></dt>
<dd><p>The number of nodes in the sequence.</p>
</dd></dl>
<p>In addition, the Python DOM interface requires that some additional support is
provided to allow <a class="reference internal" href="#xml.dom.NodeList" title="xml.dom.NodeList"><code class="xref py py-class docutils literal notranslate"><span class="pre">NodeList</span></code></a> objects to be used as Python sequences. All
<code class="xref py py-class docutils literal notranslate"><span class="pre">NodeList</span></code> implementations must include support for
<a class="reference internal" href="../reference/datamodel.html#object.__len__" title="object.__len__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__len__()</span></code></a> and
<a class="reference internal" href="../reference/datamodel.html#object.__getitem__" title="object.__getitem__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getitem__()</span></code></a>; this allows iteration over the <code class="xref py py-class docutils literal notranslate"><span class="pre">NodeList</span></code> in
<a class="reference internal" href="../reference/compound_stmts.html#for"><code class="xref std std-keyword docutils literal notranslate"><span class="pre">for</span></code></a> statements and proper support for the <a class="reference internal" href="../builtins/functions.html#len" title="len"><code class="xref py py-func docutils literal notranslate"><span class="pre">len()</span></code></a> built-in
function.</p>
<p>If a DOM implementation supports modification of the document, the
<a class="reference internal" href="#xml.dom.NodeList" title="xml.dom.NodeList"><code class="xref py py-class docutils literal notranslate"><span class="pre">NodeList</span></code></a> implementation must also support the
<a class="reference internal" href="../reference/datamodel.html#object.__setitem__" title="object.__setitem__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__setitem__()</span></code></a> and <a class="reference internal" href="../reference/datamodel.html#object.__delitem__" title="object.__delitem__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__delitem__()</span></code></a> methods.</p>
</section>
<section id="documenttype-objects">
<span id="dom-documenttype-objects"></span><h3>DocumentType Objects<a class="headerlink" href="#documenttype-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.DocumentType">Information about the notations and entities declared by a document (including
the external subset if the parser uses it and can provide the information) is
available from a <a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a> object. The <code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code> for a
document is available from the <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> object’s <a class="reference internal" href="#xml.dom.Document.doctype" title="xml.dom.Document.doctype"><code class="xref py py-attr docutils literal notranslate"><span class="pre">doctype</span></code></a>
attribute; if there is no <code class="docutils literal notranslate"><span class="pre">DOCTYPE</span></code> declaration for the document, the
document’s <code class="xref py py-attr docutils literal notranslate"><span class="pre">doctype</span></code> attribute will be set to <code class="docutils literal notranslate"><span class="pre">None</span></code> instead of an
instance of this interface.</p>
<p><a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a> is a specialization of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>, and adds the
following attributes:</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.DocumentType.publicId">
<span class="sig-prename descclassname"><span class="pre">DocumentType.</span></span><span class="sig-name descname"><span class="pre">publicId</span></span><a class="headerlink" href="#xml.dom.DocumentType.publicId" title="Link to this definition"></a></dt>
<dd><p>The public identifier for the external subset of the document type definition,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if the <code class="docutils literal notranslate"><span class="pre">DOCTYPE</span></code> declaration does not specify it.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.DocumentType.systemId">
<span class="sig-prename descclassname"><span class="pre">DocumentType.</span></span><span class="sig-name descname"><span class="pre">systemId</span></span><a class="headerlink" href="#xml.dom.DocumentType.systemId" title="Link to this definition"></a></dt>
<dd><p>The system identifier, a URI, for the external subset of the document type
definition, or <code class="docutils literal notranslate"><span class="pre">None</span></code> if the <code class="docutils literal notranslate"><span class="pre">DOCTYPE</span></code> declaration does not specify it.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.DocumentType.internalSubset">
<span class="sig-prename descclassname"><span class="pre">DocumentType.</span></span><span class="sig-name descname"><span class="pre">internalSubset</span></span><a class="headerlink" href="#xml.dom.DocumentType.internalSubset" title="Link to this definition"></a></dt>
<dd><p>A string giving the complete internal subset from the document. This does not
include the brackets which enclose the subset. If the document has no internal
subset, this should be <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.DocumentType.name">
<span class="sig-prename descclassname"><span class="pre">DocumentType.</span></span><span class="sig-name descname"><span class="pre">name</span></span><a class="headerlink" href="#xml.dom.DocumentType.name" title="Link to this definition"></a></dt>
<dd><p>The name of the root element as given in the <code class="docutils literal notranslate"><span class="pre">DOCTYPE</span></code> declaration, if
present.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.DocumentType.entities">
<span class="sig-prename descclassname"><span class="pre">DocumentType.</span></span><span class="sig-name descname"><span class="pre">entities</span></span><a class="headerlink" href="#xml.dom.DocumentType.entities" title="Link to this definition"></a></dt>
<dd><p>This is a <a class="reference internal" href="#xml.dom.NamedNodeMap" title="xml.dom.NamedNodeMap"><code class="xref py py-class docutils literal notranslate"><span class="pre">NamedNodeMap</span></code></a> of <a class="reference internal" href="#xml.dom.Entity" title="xml.dom.Entity"><code class="xref py py-class docutils literal notranslate"><span class="pre">Entity</span></code></a> nodes
giving the definitions of external entities.
For entity names defined more than once, only the first definition is provided
(others are ignored as required by the XML recommendation). This may be
<code class="docutils literal notranslate"><span class="pre">None</span></code> if the information is not provided by the parser, or if no entities are
defined.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.DocumentType.notations">
<span class="sig-prename descclassname"><span class="pre">DocumentType.</span></span><span class="sig-name descname"><span class="pre">notations</span></span><a class="headerlink" href="#xml.dom.DocumentType.notations" title="Link to this definition"></a></dt>
<dd><p>This is a <a class="reference internal" href="#xml.dom.NamedNodeMap" title="xml.dom.NamedNodeMap"><code class="xref py py-class docutils literal notranslate"><span class="pre">NamedNodeMap</span></code></a> of <a class="reference internal" href="#xml.dom.Notation" title="xml.dom.Notation"><code class="xref py py-class docutils literal notranslate"><span class="pre">Notation</span></code></a> nodes
giving the definitions of notations. For
notation names defined more than once, only the first definition is provided
(others are ignored as required by the XML recommendation). This may be
<code class="docutils literal notranslate"><span class="pre">None</span></code> if the information is not provided by the parser, or if no notations
are defined.</p>
</dd></dl>
</section>
<section id="document-objects">
<span id="dom-document-objects"></span><h3>Document Objects<a class="headerlink" href="#document-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.Document">A <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> represents an entire XML document, including its constituent
elements, attributes, processing instructions, comments etc. Remember that it
inherits properties from <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Document.documentElement">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">documentElement</span></span><a class="headerlink" href="#xml.dom.Document.documentElement" title="Link to this definition"></a></dt>
<dd><p>The one and only root element of the document.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Document.doctype">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">doctype</span></span><a class="headerlink" href="#xml.dom.Document.doctype" title="Link to this definition"></a></dt>
<dd><p>The <a class="reference internal" href="#xml.dom.DocumentType" title="xml.dom.DocumentType"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentType</span></code></a> node of the document, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Document.implementation">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">implementation</span></span><a class="headerlink" href="#xml.dom.Document.implementation" title="Link to this definition"></a></dt>
<dd><p>The <a class="reference internal" href="#xml.dom.DOMImplementation" title="xml.dom.DOMImplementation"><code class="xref py py-class docutils literal notranslate"><span class="pre">DOMImplementation</span></code></a> object which created this document.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Document.strictErrorChecking">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">strictErrorChecking</span></span><a class="headerlink" href="#xml.dom.Document.strictErrorChecking" title="Link to this definition"></a></dt>
<dd><p>Whether error checking is enforced.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Document.documentURI">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">documentURI</span></span><a class="headerlink" href="#xml.dom.Document.documentURI" title="Link to this definition"></a></dt>
<dd><p>The location of the document, or <code class="docutils literal notranslate"><span class="pre">None</span></code> if it is unknown.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createDocumentFragment">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createDocumentFragment</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createDocumentFragment" title="Link to this definition"></a></dt>
<dd><p>Create and return an empty <a class="reference internal" href="#xml.dom.DocumentFragment" title="xml.dom.DocumentFragment"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentFragment</span></code></a> node.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createCDATASection">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createCDATASection</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createCDATASection" title="Link to this definition"></a></dt>
<dd><p>Create and return a <a class="reference internal" href="#xml.dom.CDATASection" title="xml.dom.CDATASection"><code class="xref py py-class docutils literal notranslate"><span class="pre">CDATASection</span></code></a> node containing <em>data</em>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.importNode">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">importNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">importedNode</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">deep</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.importNode" title="Link to this definition"></a></dt>
<dd><p>Return a copy of <em>importedNode</em> which belongs to this document.
The original node is not removed from its document.
If <em>deep</em> is true, the descendants of the node are copied too.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createElement">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createElement</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">tagName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createElement" title="Link to this definition"></a></dt>
<dd><p>Create and return a new element node. The element is not inserted into the
document when it is created. You need to explicitly insert it with one of the
other methods such as <a class="reference internal" href="#xml.dom.Node.insertBefore" title="xml.dom.Node.insertBefore"><code class="xref py py-meth docutils literal notranslate"><span class="pre">insertBefore()</span></code></a> or <a class="reference internal" href="#xml.dom.Node.appendChild" title="xml.dom.Node.appendChild"><code class="xref py py-meth docutils literal notranslate"><span class="pre">appendChild()</span></code></a>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createElementNS">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createElementNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">tagName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createElementNS" title="Link to this definition"></a></dt>
<dd><p>Create and return a new element with a namespace. The <em>tagName</em> may have a
prefix. The element is not inserted into the document when it is created. You
need to explicitly insert it with one of the other methods such as
<a class="reference internal" href="#xml.dom.Node.insertBefore" title="xml.dom.Node.insertBefore"><code class="xref py py-meth docutils literal notranslate"><span class="pre">insertBefore()</span></code></a> or <a class="reference internal" href="#xml.dom.Node.appendChild" title="xml.dom.Node.appendChild"><code class="xref py py-meth docutils literal notranslate"><span class="pre">appendChild()</span></code></a>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createTextNode">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createTextNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createTextNode" title="Link to this definition"></a></dt>
<dd><p>Create and return a text node containing the data passed as a parameter. As
with the other creation methods, this one does not insert the node into the
tree.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createComment">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createComment</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createComment" title="Link to this definition"></a></dt>
<dd><p>Create and return a comment node containing the data passed as a parameter. As
with the other creation methods, this one does not insert the node into the
tree.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createProcessingInstruction">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createProcessingInstruction</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">target</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createProcessingInstruction" title="Link to this definition"></a></dt>
<dd><p>Create and return a processing instruction node containing the <em>target</em> and
<em>data</em> passed as parameters. As with the other creation methods, this one does
not insert the node into the tree.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createAttribute">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createAttribute</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createAttribute" title="Link to this definition"></a></dt>
<dd><p>Create and return an attribute node. This method does not associate the
attribute node with any particular element. You must use
<a class="reference internal" href="#xml.dom.Element.setAttributeNode" title="xml.dom.Element.setAttributeNode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">setAttributeNode()</span></code></a> on the appropriate <a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> object
to use the newly created attribute instance.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.createAttributeNS">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">createAttributeNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">qualifiedName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.createAttributeNS" title="Link to this definition"></a></dt>
<dd><p>Create and return an attribute node with a namespace. The <em>tagName</em> may have a
prefix. This method does not associate the attribute node with any particular
element. You must use <a class="reference internal" href="#xml.dom.Element.setAttributeNode" title="xml.dom.Element.setAttributeNode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">setAttributeNode()</span></code></a> on the appropriate
<a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> object to use the newly created attribute instance.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.getElementById">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">getElementById</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">id</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.getElementById" title="Link to this definition"></a></dt>
<dd><p>Return the element with the given ID, or <code class="docutils literal notranslate"><span class="pre">None</span></code>.
Only attributes declared as being of type ID in the DTD
or by <a class="reference internal" href="#xml.dom.Element.setIdAttribute" title="xml.dom.Element.setIdAttribute"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Element.setIdAttribute()</span></code></a> are searched.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.getElementsByTagName">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">getElementsByTagName</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">tagName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.getElementsByTagName" title="Link to this definition"></a></dt>
<dd><p>Search for all descendants (direct children, children’s children, etc.) with a
particular element type name.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.getElementsByTagNameNS">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">getElementsByTagNameNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.getElementsByTagNameNS" title="Link to this definition"></a></dt>
<dd><p>Search for all descendants (direct children, children’s children, etc.) with a
particular namespace URI and localname. The localname is the part of the
namespace after the prefix.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Document.renameNode">
<span class="sig-prename descclassname"><span class="pre">Document.</span></span><span class="sig-name descname"><span class="pre">renameNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">n</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Document.renameNode" title="Link to this definition"></a></dt>
<dd><p>Rename the element or attribute node <em>n</em>
and return it.
<em>namespaceURI</em> is the new namespace URI, or
<a class="reference internal" href="#xml.dom.EMPTY_NAMESPACE" title="xml.dom.EMPTY_NAMESPACE"><code class="xref py py-data docutils literal notranslate"><span class="pre">EMPTY_NAMESPACE</span></code></a> if the node does not belong to a namespace.
<em>name</em> is the new qualified name.</p>
<p>Raise <a class="reference internal" href="#xml.dom.WrongDocumentErr" title="xml.dom.WrongDocumentErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">WrongDocumentErr</span></code></a> if <em>n</em> was created by another document,
and <a class="reference internal" href="#xml.dom.NotSupportedErr" title="xml.dom.NotSupportedErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotSupportedErr</span></code></a> if it is neither an element nor an attribute.</p>
</dd></dl>
</section>
<section id="element-objects">
<span id="dom-element-objects"></span><h3>Element Objects<a class="headerlink" href="#element-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.Element"><a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> is a subclass of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>, so inherits all the attributes
of that class.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Element.tagName">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">tagName</span></span><a class="headerlink" href="#xml.dom.Element.tagName" title="Link to this definition"></a></dt>
<dd><p>The element type name. In a namespace-using document it may have colons in it.
The value is a string.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.setIdAttribute">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">setIdAttribute</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.setIdAttribute" title="Link to this definition"></a></dt>
<dd><p>Declare that the attribute <em>name</em> is of type ID,
so that the element is found by <a class="reference internal" href="#xml.dom.Document.getElementById" title="xml.dom.Document.getElementById"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Document.getElementById()</span></code></a>.
Raise <a class="reference internal" href="#xml.dom.NotFoundErr" title="xml.dom.NotFoundErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotFoundErr</span></code></a> if the element has no such attribute.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.setIdAttributeNS">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">setIdAttributeNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.setIdAttributeNS" title="Link to this definition"></a></dt>
<dd><p>The same as <a class="reference internal" href="#xml.dom.Element.setIdAttribute" title="xml.dom.Element.setIdAttribute"><code class="xref py py-meth docutils literal notranslate"><span class="pre">setIdAttribute()</span></code></a>,
but for an attribute specified by its namespace URI and local name.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.setIdAttributeNode">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">setIdAttributeNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">idAttr</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.setIdAttributeNode" title="Link to this definition"></a></dt>
<dd><p>The same as <a class="reference internal" href="#xml.dom.Element.setIdAttribute" title="xml.dom.Element.setIdAttribute"><code class="xref py py-meth docutils literal notranslate"><span class="pre">setIdAttribute()</span></code></a>,
but for an already retrieved attribute node.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.getElementsByTagName">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">getElementsByTagName</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">tagName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.getElementsByTagName" title="Link to this definition"></a></dt>
<dd><p>Same as equivalent method in the <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> class.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.getElementsByTagNameNS">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">getElementsByTagNameNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.getElementsByTagNameNS" title="Link to this definition"></a></dt>
<dd><p>Same as equivalent method in the <a class="reference internal" href="#xml.dom.Document" title="xml.dom.Document"><code class="xref py py-class docutils literal notranslate"><span class="pre">Document</span></code></a> class.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.hasAttribute">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">hasAttribute</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.hasAttribute" title="Link to this definition"></a></dt>
<dd><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the element has an attribute named by <em>name</em>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.hasAttributeNS">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">hasAttributeNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.hasAttributeNS" title="Link to this definition"></a></dt>
<dd><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the element has an attribute named by <em>namespaceURI</em> and
<em>localName</em>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.getAttribute">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">getAttribute</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.getAttribute" title="Link to this definition"></a></dt>
<dd><p>Return the value of the attribute named by <em>name</em> as a string. If no such
attribute exists, an empty string is returned, as if the attribute had no value.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.getAttributeNode">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">getAttributeNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">attrname</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.getAttributeNode" title="Link to this definition"></a></dt>
<dd><p>Return the <a class="reference internal" href="#xml.dom.Attr" title="xml.dom.Attr"><code class="xref py py-class docutils literal notranslate"><span class="pre">Attr</span></code></a> node for the attribute named by <em>attrname</em>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.getAttributeNS">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">getAttributeNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.getAttributeNS" title="Link to this definition"></a></dt>
<dd><p>Return the value of the attribute named by <em>namespaceURI</em> and <em>localName</em> as a
string. If no such attribute exists, an empty string is returned, as if the
attribute had no value.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.getAttributeNodeNS">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">getAttributeNodeNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.getAttributeNodeNS" title="Link to this definition"></a></dt>
<dd><p>Return an attribute value as a node, given a <em>namespaceURI</em> and <em>localName</em>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.removeAttribute">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">removeAttribute</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.removeAttribute" title="Link to this definition"></a></dt>
<dd><p>Remove an attribute by name.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.removeAttributeNode">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">removeAttributeNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">oldAttr</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.removeAttributeNode" title="Link to this definition"></a></dt>
<dd><p>Remove and return <em>oldAttr</em> from the attribute list, if present. If <em>oldAttr</em> is
not present, <a class="reference internal" href="#xml.dom.NotFoundErr" title="xml.dom.NotFoundErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotFoundErr</span></code></a> is raised.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.removeAttributeNS">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">removeAttributeNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.removeAttributeNS" title="Link to this definition"></a></dt>
<dd><p>Remove an attribute by name. Note that it uses a localName, not a qname.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.setAttribute">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">setAttribute</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">value</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.setAttribute" title="Link to this definition"></a></dt>
<dd><p>Set an attribute value from a string.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.setAttributeNode">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">setAttributeNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">newAttr</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.setAttributeNode" title="Link to this definition"></a></dt>
<dd><p>Add a new attribute node to the element, replacing an existing attribute if
necessary if the <a class="reference internal" href="#xml.dom.Attr.name" title="xml.dom.Attr.name"><code class="xref py py-attr docutils literal notranslate"><span class="pre">name</span></code></a> attribute matches. If a replacement
occurs, the old attribute node will be returned. If <em>newAttr</em> is already in use,
<a class="reference internal" href="#xml.dom.InuseAttributeErr" title="xml.dom.InuseAttributeErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">InuseAttributeErr</span></code></a> will be raised.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.setAttributeNodeNS">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">setAttributeNodeNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">newAttr</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.setAttributeNodeNS" title="Link to this definition"></a></dt>
<dd><p>Add a new attribute node to the element, replacing an existing attribute if
necessary if the <a class="reference internal" href="#xml.dom.Node.namespaceURI" title="xml.dom.Node.namespaceURI"><code class="xref py py-attr docutils literal notranslate"><span class="pre">namespaceURI</span></code></a> and <a class="reference internal" href="#xml.dom.Attr.localName" title="xml.dom.Attr.localName"><code class="xref py py-attr docutils literal notranslate"><span class="pre">localName</span></code></a>
attributes match. If a replacement occurs, the old attribute node will be
returned. If <em>newAttr</em> is already in use, <a class="reference internal" href="#xml.dom.InuseAttributeErr" title="xml.dom.InuseAttributeErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">InuseAttributeErr</span></code></a> will be
raised.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Element.setAttributeNS">
<span class="sig-prename descclassname"><span class="pre">Element.</span></span><span class="sig-name descname"><span class="pre">setAttributeNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">qname</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">value</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Element.setAttributeNS" title="Link to this definition"></a></dt>
<dd><p>Set an attribute value from a string, given a <em>namespaceURI</em> and a <em>qname</em>.
Note that a qname is the whole attribute name. This is different than above.</p>
</dd></dl>
</section>
<section id="attr-objects">
<span id="dom-attr-objects"></span><h3>Attr Objects<a class="headerlink" href="#attr-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.Attr"><a class="reference internal" href="#xml.dom.Attr" title="xml.dom.Attr"><code class="xref py py-class docutils literal notranslate"><span class="pre">Attr</span></code></a> inherits from <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>, so inherits all its attributes.</p>
<p>Attribute nodes are not part of the document tree.
They are contained in the <a class="reference internal" href="#xml.dom.Node.attributes" title="xml.dom.Node.attributes"><code class="xref py py-attr docutils literal notranslate"><span class="pre">attributes</span></code></a> map of an element,
not in its children,
and their <a class="reference internal" href="#xml.dom.Node.parentNode" title="xml.dom.Node.parentNode"><code class="xref py py-attr docutils literal notranslate"><span class="pre">parentNode</span></code></a>, <a class="reference internal" href="#xml.dom.Node.previousSibling" title="xml.dom.Node.previousSibling"><code class="xref py py-attr docutils literal notranslate"><span class="pre">previousSibling</span></code></a>
and <a class="reference internal" href="#xml.dom.Node.nextSibling" title="xml.dom.Node.nextSibling"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nextSibling</span></code></a> are always <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Attr.name">
<span class="sig-prename descclassname"><span class="pre">Attr.</span></span><span class="sig-name descname"><span class="pre">name</span></span><a class="headerlink" href="#xml.dom.Attr.name" title="Link to this definition"></a></dt>
<dd><p>The attribute name.
In a namespace-using document it may include a colon.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Attr.localName">
<span class="sig-prename descclassname"><span class="pre">Attr.</span></span><span class="sig-name descname"><span class="pre">localName</span></span><a class="headerlink" href="#xml.dom.Attr.localName" title="Link to this definition"></a></dt>
<dd><p>The part of the name following the colon if there is one, else the
entire name.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Attr.prefix">
<span class="sig-prename descclassname"><span class="pre">Attr.</span></span><span class="sig-name descname"><span class="pre">prefix</span></span><a class="headerlink" href="#xml.dom.Attr.prefix" title="Link to this definition"></a></dt>
<dd><p>The part of the name preceding the colon if there is one, else the
empty string.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Attr.isId">
<span class="sig-prename descclassname"><span class="pre">Attr.</span></span><span class="sig-name descname"><span class="pre">isId</span></span><a class="headerlink" href="#xml.dom.Attr.isId" title="Link to this definition"></a></dt>
<dd><p>Whether this attribute is of type ID,
either because it is declared as such in the DTD
or because <a class="reference internal" href="#xml.dom.Element.setIdAttribute" title="xml.dom.Element.setIdAttribute"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Element.setIdAttribute()</span></code></a> was used.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Attr.ownerElement">
<span class="sig-prename descclassname"><span class="pre">Attr.</span></span><span class="sig-name descname"><span class="pre">ownerElement</span></span><a class="headerlink" href="#xml.dom.Attr.ownerElement" title="Link to this definition"></a></dt>
<dd><p>The <a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> node to which this attribute belongs,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if it is not used.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Attr.specified">
<span class="sig-prename descclassname"><span class="pre">Attr.</span></span><span class="sig-name descname"><span class="pre">specified</span></span><a class="headerlink" href="#xml.dom.Attr.specified" title="Link to this definition"></a></dt>
<dd><p>Whether the value of the attribute was explicitly set in the document,
as opposed to being defaulted from the DTD.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Attr.value">
<span class="sig-prename descclassname"><span class="pre">Attr.</span></span><span class="sig-name descname"><span class="pre">value</span></span><a class="headerlink" href="#xml.dom.Attr.value" title="Link to this definition"></a></dt>
<dd><p>The text value of the attribute. This is a synonym for the
<a class="reference internal" href="#xml.dom.Node.nodeValue" title="xml.dom.Node.nodeValue"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nodeValue</span></code></a> attribute.</p>
</dd></dl>
</section>
<section id="namednodemap-objects">
<span id="dom-attributelist-objects"></span><h3>NamedNodeMap Objects<a class="headerlink" href="#namednodemap-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.NamedNodeMap"><a class="reference internal" href="#xml.dom.NamedNodeMap" title="xml.dom.NamedNodeMap"><code class="xref py py-class docutils literal notranslate"><span class="pre">NamedNodeMap</span></code></a> does <em>not</em> inherit from <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.NamedNodeMap.length">
<span class="sig-prename descclassname"><span class="pre">NamedNodeMap.</span></span><span class="sig-name descname"><span class="pre">length</span></span><a class="headerlink" href="#xml.dom.NamedNodeMap.length" title="Link to this definition"></a></dt>
<dd><p>The length of the attribute list.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.NamedNodeMap.item">
<span class="sig-prename descclassname"><span class="pre">NamedNodeMap.</span></span><span class="sig-name descname"><span class="pre">item</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">index</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.NamedNodeMap.item" title="Link to this definition"></a></dt>
<dd><p>Return an attribute with a particular index. The order you get the attributes
in is arbitrary but will be consistent for the life of a DOM. Each item is an
attribute node. Get its value with the <a class="reference internal" href="#xml.dom.Attr.value" title="xml.dom.Attr.value"><code class="xref py py-attr docutils literal notranslate"><span class="pre">value</span></code></a> attribute.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.NamedNodeMap.getNamedItem">
<span class="sig-prename descclassname"><span class="pre">NamedNodeMap.</span></span><span class="sig-name descname"><span class="pre">getNamedItem</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.NamedNodeMap.getNamedItem" title="Link to this definition"></a></dt>
<dd><p>Return the node with the given <a class="reference internal" href="#xml.dom.Attr.name" title="xml.dom.Attr.name"><code class="xref py py-attr docutils literal notranslate"><span class="pre">name</span></code></a>,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if there is no such node.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.NamedNodeMap.getNamedItemNS">
<span class="sig-prename descclassname"><span class="pre">NamedNodeMap.</span></span><span class="sig-name descname"><span class="pre">getNamedItemNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.NamedNodeMap.getNamedItemNS" title="Link to this definition"></a></dt>
<dd><p>Return the node with the given namespace URI and local name,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if there is no such node.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.NamedNodeMap.setNamedItem">
<span class="sig-prename descclassname"><span class="pre">NamedNodeMap.</span></span><span class="sig-name descname"><span class="pre">setNamedItem</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">node</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.NamedNodeMap.setNamedItem" title="Link to this definition"></a></dt>
<dd><p>Add <em>node</em> to the map, using its <a class="reference internal" href="#xml.dom.Attr.name" title="xml.dom.Attr.name"><code class="xref py py-attr docutils literal notranslate"><span class="pre">name</span></code></a> as the key.
Return the node which it replaces, or <code class="docutils literal notranslate"><span class="pre">None</span></code> if it replaces no node.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.NamedNodeMap.setNamedItemNS">
<span class="sig-prename descclassname"><span class="pre">NamedNodeMap.</span></span><span class="sig-name descname"><span class="pre">setNamedItemNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">node</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.NamedNodeMap.setNamedItemNS" title="Link to this definition"></a></dt>
<dd><p>Add <em>node</em> to the map,
using its namespace URI and local name as the key.
Return the node which it replaces, or <code class="docutils literal notranslate"><span class="pre">None</span></code> if it replaces no node.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.NamedNodeMap.removeNamedItem">
<span class="sig-prename descclassname"><span class="pre">NamedNodeMap.</span></span><span class="sig-name descname"><span class="pre">removeNamedItem</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">name</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.NamedNodeMap.removeNamedItem" title="Link to this definition"></a></dt>
<dd><p>Remove and return the node with the given <a class="reference internal" href="#xml.dom.Attr.name" title="xml.dom.Attr.name"><code class="xref py py-attr docutils literal notranslate"><span class="pre">name</span></code></a>.
Raise <a class="reference internal" href="#xml.dom.NotFoundErr" title="xml.dom.NotFoundErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotFoundErr</span></code></a> if there is no such node.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.NamedNodeMap.removeNamedItemNS">
<span class="sig-prename descclassname"><span class="pre">NamedNodeMap.</span></span><span class="sig-name descname"><span class="pre">removeNamedItemNS</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">namespaceURI</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">localName</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.NamedNodeMap.removeNamedItemNS" title="Link to this definition"></a></dt>
<dd><p>Remove and return the node with the given namespace URI and local name.
Raise <a class="reference internal" href="#xml.dom.NotFoundErr" title="xml.dom.NotFoundErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotFoundErr</span></code></a> if there is no such node.</p>
</dd></dl>
<p>You can also use the standardized <code class="xref py py-meth docutils literal notranslate"><span class="pre">getAttribute*()</span></code> family of methods
on the <a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> objects.</p>
</section>
<section id="documentfragment-objects">
<span id="dom-documentfragment-objects"></span><h3>DocumentFragment Objects<a class="headerlink" href="#documentfragment-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.DocumentFragment"><a class="reference internal" href="#xml.dom.DocumentFragment" title="xml.dom.DocumentFragment"><code class="xref py py-class docutils literal notranslate"><span class="pre">DocumentFragment</span></code></a> is a lightweight container of nodes.
It is a subclass of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>.
When it is inserted into the document tree,
its children are inserted instead of it,
and it becomes empty.</p>
</section>
<section id="characterdata-objects">
<span id="dom-characterdata-objects"></span><h3>CharacterData Objects<a class="headerlink" href="#characterdata-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.CharacterData"><a class="reference internal" href="#xml.dom.CharacterData" title="xml.dom.CharacterData"><code class="xref py py-class docutils literal notranslate"><span class="pre">CharacterData</span></code></a> represents text-like data in the XML document.
It is a subclass of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>, and the base class
of <a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a>, <a class="reference internal" href="#xml.dom.CDATASection" title="xml.dom.CDATASection"><code class="xref py py-class docutils literal notranslate"><span class="pre">CDATASection</span></code></a> and <a class="reference internal" href="#xml.dom.Comment" title="xml.dom.Comment"><code class="xref py py-class docutils literal notranslate"><span class="pre">Comment</span></code></a>.
Such nodes cannot have child nodes.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.CharacterData.data">
<span class="sig-prename descclassname"><span class="pre">CharacterData.</span></span><span class="sig-name descname"><span class="pre">data</span></span><a class="headerlink" href="#xml.dom.CharacterData.data" title="Link to this definition"></a></dt>
<dd><p>The content of the node as a string.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.CharacterData.length">
<span class="sig-prename descclassname"><span class="pre">CharacterData.</span></span><span class="sig-name descname"><span class="pre">length</span></span><a class="headerlink" href="#xml.dom.CharacterData.length" title="Link to this definition"></a></dt>
<dd><p>The number of characters in <a class="reference internal" href="#xml.dom.CharacterData.data" title="xml.dom.CharacterData.data"><code class="xref py py-attr docutils literal notranslate"><span class="pre">data</span></code></a>.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.CharacterData.substringData">
<span class="sig-prename descclassname"><span class="pre">CharacterData.</span></span><span class="sig-name descname"><span class="pre">substringData</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">offset</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">count</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.CharacterData.substringData" title="Link to this definition"></a></dt>
<dd><p>Return the substring of <a class="reference internal" href="#xml.dom.CharacterData.data" title="xml.dom.CharacterData.data"><code class="xref py py-attr docutils literal notranslate"><span class="pre">data</span></code></a>
of <em>count</em> characters starting at <em>offset</em>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.CharacterData.appendData">
<span class="sig-prename descclassname"><span class="pre">CharacterData.</span></span><span class="sig-name descname"><span class="pre">appendData</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">arg</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.CharacterData.appendData" title="Link to this definition"></a></dt>
<dd><p>Append the string <em>arg</em> to <a class="reference internal" href="#xml.dom.CharacterData.data" title="xml.dom.CharacterData.data"><code class="xref py py-attr docutils literal notranslate"><span class="pre">data</span></code></a>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.CharacterData.insertData">
<span class="sig-prename descclassname"><span class="pre">CharacterData.</span></span><span class="sig-name descname"><span class="pre">insertData</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">offset</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">arg</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.CharacterData.insertData" title="Link to this definition"></a></dt>
<dd><p>Insert the string <em>arg</em> into <a class="reference internal" href="#xml.dom.CharacterData.data" title="xml.dom.CharacterData.data"><code class="xref py py-attr docutils literal notranslate"><span class="pre">data</span></code></a> at <em>offset</em>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.CharacterData.deleteData">
<span class="sig-prename descclassname"><span class="pre">CharacterData.</span></span><span class="sig-name descname"><span class="pre">deleteData</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">offset</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">count</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.CharacterData.deleteData" title="Link to this definition"></a></dt>
<dd><p>Remove <em>count</em> characters from <a class="reference internal" href="#xml.dom.CharacterData.data" title="xml.dom.CharacterData.data"><code class="xref py py-attr docutils literal notranslate"><span class="pre">data</span></code></a>
starting at <em>offset</em>.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.CharacterData.replaceData">
<span class="sig-prename descclassname"><span class="pre">CharacterData.</span></span><span class="sig-name descname"><span class="pre">replaceData</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">offset</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">count</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">arg</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.CharacterData.replaceData" title="Link to this definition"></a></dt>
<dd><p>Replace <em>count</em> characters of <a class="reference internal" href="#xml.dom.CharacterData.data" title="xml.dom.CharacterData.data"><code class="xref py py-attr docutils literal notranslate"><span class="pre">data</span></code></a>
starting at <em>offset</em> with the string <em>arg</em>.</p>
</dd></dl>
</section>
<section id="comment-objects">
<span id="dom-comment-objects"></span><h3>Comment Objects<a class="headerlink" href="#comment-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.Comment"><a class="reference internal" href="#xml.dom.Comment" title="xml.dom.Comment"><code class="xref py py-class docutils literal notranslate"><span class="pre">Comment</span></code></a> represents a comment in the XML document.
It is a subclass of <a class="reference internal" href="#xml.dom.CharacterData" title="xml.dom.CharacterData"><code class="xref py py-class docutils literal notranslate"><span class="pre">CharacterData</span></code></a>.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Comment.data">
<span class="sig-prename descclassname"><span class="pre">Comment.</span></span><span class="sig-name descname"><span class="pre">data</span></span><a class="headerlink" href="#xml.dom.Comment.data" title="Link to this definition"></a></dt>
<dd><p>The content of the comment as a string. The attribute contains all characters
between the leading <code class="docutils literal notranslate"><span class="pre">&lt;!-</span></code><code class="docutils literal notranslate"><span class="pre">-</span></code> and trailing <code class="docutils literal notranslate"><span class="pre">-</span></code><code class="docutils literal notranslate"><span class="pre">-&gt;</span></code>, but does not
include them.</p>
</dd></dl>
</section>
<section id="text-and-cdatasection-objects">
<span id="dom-text-objects"></span><h3>Text and CDATASection Objects<a class="headerlink" href="#text-and-cdatasection-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.CDATASection"><span id="xml.dom.Text"></span>The <a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a> interface represents text in the XML document. If the parser
and DOM implementation support the DOM’s XML extension, portions of the text
enclosed in CDATA marked sections are stored in <a class="reference internal" href="#xml.dom.CDATASection" title="xml.dom.CDATASection"><code class="xref py py-class docutils literal notranslate"><span class="pre">CDATASection</span></code></a> objects.
These two interfaces are identical, but provide different values for the
<a class="reference internal" href="#xml.dom.Node.nodeType" title="xml.dom.Node.nodeType"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nodeType</span></code></a> attribute.</p>
<p><a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a> extends the <a class="reference internal" href="#xml.dom.CharacterData" title="xml.dom.CharacterData"><code class="xref py py-class docutils literal notranslate"><span class="pre">CharacterData</span></code></a> interface,
and <a class="reference internal" href="#xml.dom.CDATASection" title="xml.dom.CDATASection"><code class="xref py py-class docutils literal notranslate"><span class="pre">CDATASection</span></code></a> extends <code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code>.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Text.data">
<span class="sig-prename descclassname"><span class="pre">Text.</span></span><span class="sig-name descname"><span class="pre">data</span></span><a class="headerlink" href="#xml.dom.Text.data" title="Link to this definition"></a></dt>
<dd><p>The content of the text node as a string.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Text.wholeText">
<span class="sig-prename descclassname"><span class="pre">Text.</span></span><span class="sig-name descname"><span class="pre">wholeText</span></span><a class="headerlink" href="#xml.dom.Text.wholeText" title="Link to this definition"></a></dt>
<dd><p>The text of all <a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a> nodes logically adjacent to this node,
concatenated in document order.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Text.replaceWholeText">
<span class="sig-prename descclassname"><span class="pre">Text.</span></span><span class="sig-name descname"><span class="pre">replaceWholeText</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">content</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Text.replaceWholeText" title="Link to this definition"></a></dt>
<dd><p>Replace the text of all <a class="reference internal" href="#xml.dom.Text" title="xml.dom.Text"><code class="xref py py-class docutils literal notranslate"><span class="pre">Text</span></code></a> nodes logically adjacent
to this node with <em>content</em>, removing the other nodes.
Return this node, or <code class="docutils literal notranslate"><span class="pre">None</span></code> if <em>content</em> is empty.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="xml.dom.Text.splitText">
<span class="sig-prename descclassname"><span class="pre">Text.</span></span><span class="sig-name descname"><span class="pre">splitText</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">offset</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#xml.dom.Text.splitText" title="Link to this definition"></a></dt>
<dd><p>Split this node into two nodes at <em>offset</em>,
keeping the first part in this node
and returning a new sibling node with the rest.</p>
</dd></dl>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>The use of a <a class="reference internal" href="#xml.dom.CDATASection" title="xml.dom.CDATASection"><code class="xref py py-class docutils literal notranslate"><span class="pre">CDATASection</span></code></a> node does not indicate that the node
represents a complete CDATA marked section, only that the content of the node
was part of a CDATA section. A single CDATA section may be represented by more
than one node in the document tree. There is no way to determine whether two
adjacent <code class="xref py py-class docutils literal notranslate"><span class="pre">CDATASection</span></code> nodes represent different CDATA marked sections.</p>
</div>
</section>
<section id="processinginstruction-objects">
<span id="dom-pi-objects"></span><h3>ProcessingInstruction Objects<a class="headerlink" href="#processinginstruction-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.ProcessingInstruction">Represents a processing instruction in the XML document; this inherits from the
<a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a> interface and cannot have child nodes.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.ProcessingInstruction.target">
<span class="sig-prename descclassname"><span class="pre">ProcessingInstruction.</span></span><span class="sig-name descname"><span class="pre">target</span></span><a class="headerlink" href="#xml.dom.ProcessingInstruction.target" title="Link to this definition"></a></dt>
<dd><p>The content of the processing instruction up to the first whitespace character.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.ProcessingInstruction.data">
<span class="sig-prename descclassname"><span class="pre">ProcessingInstruction.</span></span><span class="sig-name descname"><span class="pre">data</span></span><a class="headerlink" href="#xml.dom.ProcessingInstruction.data" title="Link to this definition"></a></dt>
<dd><p>The content of the processing instruction following the first whitespace
character.</p>
</dd></dl>
</section>
<section id="entity-objects">
<span id="dom-entity-objects"></span><h3>Entity Objects<a class="headerlink" href="#entity-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.Entity"><a class="reference internal" href="#xml.dom.Entity" title="xml.dom.Entity"><code class="xref py py-class docutils literal notranslate"><span class="pre">Entity</span></code></a> represents a parsed or unparsed entity declared in the DTD.
It is a subclass of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a>.
Entity nodes are contained in <a class="reference internal" href="#xml.dom.DocumentType.entities" title="xml.dom.DocumentType.entities"><code class="xref py py-attr docutils literal notranslate"><span class="pre">DocumentType.entities</span></code></a>
and cannot be inserted into the document tree.
The name of the entity is its <a class="reference internal" href="#xml.dom.Node.nodeName" title="xml.dom.Node.nodeName"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nodeName</span></code></a>.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Entity.publicId">
<span class="sig-prename descclassname"><span class="pre">Entity.</span></span><span class="sig-name descname"><span class="pre">publicId</span></span><a class="headerlink" href="#xml.dom.Entity.publicId" title="Link to this definition"></a></dt>
<dd><p>The public identifier of the entity,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if it is not specified.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Entity.systemId">
<span class="sig-prename descclassname"><span class="pre">Entity.</span></span><span class="sig-name descname"><span class="pre">systemId</span></span><a class="headerlink" href="#xml.dom.Entity.systemId" title="Link to this definition"></a></dt>
<dd><p>The system identifier of the entity,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if it is not specified.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Entity.notationName">
<span class="sig-prename descclassname"><span class="pre">Entity.</span></span><span class="sig-name descname"><span class="pre">notationName</span></span><a class="headerlink" href="#xml.dom.Entity.notationName" title="Link to this definition"></a></dt>
<dd><p>The name of the notation for an unparsed entity,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> for a parsed entity.
This is a read-only attribute.</p>
</dd></dl>
</section>
<section id="notation-objects">
<span id="dom-notation-objects"></span><h3>Notation Objects<a class="headerlink" href="#notation-objects" title="Link to this heading"></a></h3>
<p id="xml.dom.Notation"><a class="reference internal" href="#xml.dom.Notation" title="xml.dom.Notation"><code class="xref py py-class docutils literal notranslate"><span class="pre">Notation</span></code></a> represents a notation declared in the DTD.
It is a subclass of <a class="reference internal" href="#xml.dom.Node" title="xml.dom.Node"><code class="xref py py-class docutils literal notranslate"><span class="pre">Node</span></code></a> and cannot have child nodes.
Notation nodes are contained in <a class="reference internal" href="#xml.dom.DocumentType.notations" title="xml.dom.DocumentType.notations"><code class="xref py py-attr docutils literal notranslate"><span class="pre">DocumentType.notations</span></code></a>
and cannot be inserted into the document tree.
The name of the notation is its <a class="reference internal" href="#xml.dom.Node.nodeName" title="xml.dom.Node.nodeName"><code class="xref py py-attr docutils literal notranslate"><span class="pre">nodeName</span></code></a>.</p>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Notation.publicId">
<span class="sig-prename descclassname"><span class="pre">Notation.</span></span><span class="sig-name descname"><span class="pre">publicId</span></span><a class="headerlink" href="#xml.dom.Notation.publicId" title="Link to this definition"></a></dt>
<dd><p>The public identifier of the notation,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if it is not specified.
This is a read-only attribute.</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="xml.dom.Notation.systemId">
<span class="sig-prename descclassname"><span class="pre">Notation.</span></span><span class="sig-name descname"><span class="pre">systemId</span></span><a class="headerlink" href="#xml.dom.Notation.systemId" title="Link to this definition"></a></dt>
<dd><p>The system identifier of the notation,
or <code class="docutils literal notranslate"><span class="pre">None</span></code> if it is not specified.
This is a read-only attribute.</p>
</dd></dl>
</section>
<section id="exceptions">
<span id="dom-exceptions"></span><h3>Exceptions<a class="headerlink" href="#exceptions" title="Link to this heading"></a></h3>
<p>The DOM Level 2 recommendation defines a single exception, <a class="reference internal" href="#xml.dom.DOMException" title="xml.dom.DOMException"><code class="xref py py-exc docutils literal notranslate"><span class="pre">DOMException</span></code></a>,
and a number of constants that allow applications to determine what sort of
error occurred. <code class="xref py py-exc docutils literal notranslate"><span class="pre">DOMException</span></code> instances carry a <a class="reference internal" href="code.html#module-code" title="code: Facilities to implement read-eval-print loops."><code class="xref py py-attr docutils literal notranslate"><span class="pre">code</span></code></a> attribute
that provides the appropriate value for the specific exception.</p>
<p>The Python DOM interface provides the constants, but also expands the set of
exceptions so that a specific exception exists for each of the exception codes
defined by the DOM. The implementations must raise the appropriate specific
exception, each of which carries the appropriate value for the <a class="reference internal" href="code.html#module-code" title="code: Facilities to implement read-eval-print loops."><code class="xref py py-attr docutils literal notranslate"><span class="pre">code</span></code></a>
attribute.</p>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.DOMException">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">DOMException</span></span><a class="headerlink" href="#xml.dom.DOMException" title="Link to this definition"></a></dt>
<dd><p>Base exception class used for all specific DOM exceptions. This exception class
cannot be directly instantiated.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.DomstringSizeErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">DomstringSizeErr</span></span><a class="headerlink" href="#xml.dom.DomstringSizeErr" title="Link to this definition"></a></dt>
<dd><p>Raised when a specified range of text does not fit into a string. This is not
known to be used in the Python DOM implementations, but may be received from DOM
implementations not written in Python.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.HierarchyRequestErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">HierarchyRequestErr</span></span><a class="headerlink" href="#xml.dom.HierarchyRequestErr" title="Link to this definition"></a></dt>
<dd><p>Raised when an attempt is made to insert a node where the node type is not
allowed.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.IndexSizeErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">IndexSizeErr</span></span><a class="headerlink" href="#xml.dom.IndexSizeErr" title="Link to this definition"></a></dt>
<dd><p>Raised when an index or size parameter to a method is negative or exceeds the
allowed values.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.InuseAttributeErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">InuseAttributeErr</span></span><a class="headerlink" href="#xml.dom.InuseAttributeErr" title="Link to this definition"></a></dt>
<dd><p>Raised when an attempt is made to insert an <a class="reference internal" href="#xml.dom.Attr" title="xml.dom.Attr"><code class="xref py py-class docutils literal notranslate"><span class="pre">Attr</span></code></a> node that is already
present elsewhere in the document.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.InvalidAccessErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">InvalidAccessErr</span></span><a class="headerlink" href="#xml.dom.InvalidAccessErr" title="Link to this definition"></a></dt>
<dd><p>Raised if a parameter or an operation is not supported on the underlying object.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.InvalidCharacterErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">InvalidCharacterErr</span></span><a class="headerlink" href="#xml.dom.InvalidCharacterErr" title="Link to this definition"></a></dt>
<dd><p>This exception is raised when a string parameter contains a character that is
not permitted in the context it’s being used in by the XML 1.0 recommendation.
For example, attempting to create an <a class="reference internal" href="#xml.dom.Element" title="xml.dom.Element"><code class="xref py py-class docutils literal notranslate"><span class="pre">Element</span></code></a> node with a space in the
element type name will cause this error to be raised.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.InvalidModificationErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">InvalidModificationErr</span></span><a class="headerlink" href="#xml.dom.InvalidModificationErr" title="Link to this definition"></a></dt>
<dd><p>Raised when an attempt is made to modify the type of a node.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.InvalidStateErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">InvalidStateErr</span></span><a class="headerlink" href="#xml.dom.InvalidStateErr" title="Link to this definition"></a></dt>
<dd><p>Raised when an attempt is made to use an object that is not defined or is no
longer usable.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.NamespaceErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NamespaceErr</span></span><a class="headerlink" href="#xml.dom.NamespaceErr" title="Link to this definition"></a></dt>
<dd><p>If an attempt is made to change any object in a way that is not permitted with
regard to the <a class="reference external" href="https://www.w3.org/TR/REC-xml-names/">Namespaces in XML</a>
recommendation, this exception is raised.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.NotFoundErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NotFoundErr</span></span><a class="headerlink" href="#xml.dom.NotFoundErr" title="Link to this definition"></a></dt>
<dd><p>Exception when a node does not exist in the referenced context. For example,
<a class="reference internal" href="#xml.dom.NamedNodeMap.removeNamedItem" title="xml.dom.NamedNodeMap.removeNamedItem"><code class="xref py py-meth docutils literal notranslate"><span class="pre">NamedNodeMap.removeNamedItem()</span></code></a> will raise this if the node passed in does
not exist in the map.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.NotSupportedErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NotSupportedErr</span></span><a class="headerlink" href="#xml.dom.NotSupportedErr" title="Link to this definition"></a></dt>
<dd><p>Raised when the implementation does not support the requested type of object or
operation.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.NoDataAllowedErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NoDataAllowedErr</span></span><a class="headerlink" href="#xml.dom.NoDataAllowedErr" title="Link to this definition"></a></dt>
<dd><p>This is raised if data is specified for a node which does not support data.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.NoModificationAllowedErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NoModificationAllowedErr</span></span><a class="headerlink" href="#xml.dom.NoModificationAllowedErr" title="Link to this definition"></a></dt>
<dd><p>Raised on attempts to modify an object where modifications are not allowed (such
as for read-only nodes).</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.SyntaxErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">SyntaxErr</span></span><a class="headerlink" href="#xml.dom.SyntaxErr" title="Link to this definition"></a></dt>
<dd><p>Raised when an invalid or illegal string is specified.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.ValidationErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">ValidationErr</span></span><a class="headerlink" href="#xml.dom.ValidationErr" title="Link to this definition"></a></dt>
<dd><p>Raised when an operation would make the document invalid
with respect to partial validity.
This is not known to be used in the Python DOM implementations,
but may be received from DOM implementations not written in Python.</p>
</dd></dl>
<dl class="py exception">
<dt class="sig sig-object py" id="xml.dom.WrongDocumentErr">
<em class="property"><span class="k"><span class="pre">exception</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">WrongDocumentErr</span></span><a class="headerlink" href="#xml.dom.WrongDocumentErr" title="Link to this definition"></a></dt>
<dd><p>Raised when a node is inserted in a different document than it currently belongs
to, and the implementation does not support migrating the node from one document
to the other.</p>
</dd></dl>
<p>The exception codes defined in the DOM recommendation map to the exceptions
described above according to this table:</p>
<table class="docutils align-default">
<thead>
<tr class="row-odd"><th class="head"><p>Constant</p></th>
<th class="head"><p>Exception</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.DOMSTRING_SIZE_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">DOMSTRING_SIZE_ERR</span></span><a class="headerlink" href="#xml.dom.DOMSTRING_SIZE_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.DomstringSizeErr" title="xml.dom.DomstringSizeErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">DomstringSizeErr</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.HIERARCHY_REQUEST_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">HIERARCHY_REQUEST_ERR</span></span><a class="headerlink" href="#xml.dom.HIERARCHY_REQUEST_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.HierarchyRequestErr" title="xml.dom.HierarchyRequestErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">HierarchyRequestErr</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.INDEX_SIZE_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">INDEX_SIZE_ERR</span></span><a class="headerlink" href="#xml.dom.INDEX_SIZE_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.IndexSizeErr" title="xml.dom.IndexSizeErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">IndexSizeErr</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.INUSE_ATTRIBUTE_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">INUSE_ATTRIBUTE_ERR</span></span><a class="headerlink" href="#xml.dom.INUSE_ATTRIBUTE_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.InuseAttributeErr" title="xml.dom.InuseAttributeErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">InuseAttributeErr</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.INVALID_ACCESS_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">INVALID_ACCESS_ERR</span></span><a class="headerlink" href="#xml.dom.INVALID_ACCESS_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.InvalidAccessErr" title="xml.dom.InvalidAccessErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">InvalidAccessErr</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.INVALID_CHARACTER_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">INVALID_CHARACTER_ERR</span></span><a class="headerlink" href="#xml.dom.INVALID_CHARACTER_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.InvalidCharacterErr" title="xml.dom.InvalidCharacterErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">InvalidCharacterErr</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.INVALID_MODIFICATION_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">INVALID_MODIFICATION_ERR</span></span><a class="headerlink" href="#xml.dom.INVALID_MODIFICATION_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.InvalidModificationErr" title="xml.dom.InvalidModificationErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">InvalidModificationErr</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.INVALID_STATE_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">INVALID_STATE_ERR</span></span><a class="headerlink" href="#xml.dom.INVALID_STATE_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.InvalidStateErr" title="xml.dom.InvalidStateErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">InvalidStateErr</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.NAMESPACE_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NAMESPACE_ERR</span></span><a class="headerlink" href="#xml.dom.NAMESPACE_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.NamespaceErr" title="xml.dom.NamespaceErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NamespaceErr</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.NOT_FOUND_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NOT_FOUND_ERR</span></span><a class="headerlink" href="#xml.dom.NOT_FOUND_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.NotFoundErr" title="xml.dom.NotFoundErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotFoundErr</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.NOT_SUPPORTED_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NOT_SUPPORTED_ERR</span></span><a class="headerlink" href="#xml.dom.NOT_SUPPORTED_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.NotSupportedErr" title="xml.dom.NotSupportedErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NotSupportedErr</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.NO_DATA_ALLOWED_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NO_DATA_ALLOWED_ERR</span></span><a class="headerlink" href="#xml.dom.NO_DATA_ALLOWED_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.NoDataAllowedErr" title="xml.dom.NoDataAllowedErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NoDataAllowedErr</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.NO_MODIFICATION_ALLOWED_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">NO_MODIFICATION_ALLOWED_ERR</span></span><a class="headerlink" href="#xml.dom.NO_MODIFICATION_ALLOWED_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.NoModificationAllowedErr" title="xml.dom.NoModificationAllowedErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">NoModificationAllowedErr</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.SYNTAX_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">SYNTAX_ERR</span></span><a class="headerlink" href="#xml.dom.SYNTAX_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.SyntaxErr" title="xml.dom.SyntaxErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">SyntaxErr</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.VALIDATION_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">VALIDATION_ERR</span></span><a class="headerlink" href="#xml.dom.VALIDATION_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.ValidationErr" title="xml.dom.ValidationErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValidationErr</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="py data">
<dt class="sig sig-object py" id="xml.dom.WRONG_DOCUMENT_ERR">
<span class="sig-prename descclassname"><span class="pre">xml.dom.</span></span><span class="sig-name descname"><span class="pre">WRONG_DOCUMENT_ERR</span></span><a class="headerlink" href="#xml.dom.WRONG_DOCUMENT_ERR" title="Link to this definition"></a></dt>
<dd></dd></dl>
</td>
<td><p><a class="reference internal" href="#xml.dom.WrongDocumentErr" title="xml.dom.WrongDocumentErr"><code class="xref py py-exc docutils literal notranslate"><span class="pre">WrongDocumentErr</span></code></a></p></td>
</tr>
</tbody>
</table>
</section>
</section>
<section id="conformance">
<span id="dom-conformance"></span><h2>Conformance<a class="headerlink" href="#conformance" title="Link to this heading"></a></h2>
<p>This section describes the conformance requirements and relationships between
the Python DOM API, the W3C DOM recommendations, and the OMG IDL mapping for
Python.</p>
<section id="type-mapping">
<span id="dom-type-mapping"></span><h3>Type Mapping<a class="headerlink" href="#type-mapping" title="Link to this heading"></a></h3>
<p>The IDL types used in the DOM specification are mapped to Python types
according to the following table.</p>
<table class="docutils align-default">
<thead>
<tr class="row-odd"><th class="head"><p>IDL Type</p></th>
<th class="head"><p>Python Type</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">boolean</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">bool</span></code> or <code class="docutils literal notranslate"><span class="pre">int</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">int</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">int</span></code></p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">long</span> <span class="pre">int</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">int</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">int</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">int</span></code></p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">DOMString</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">str</span></code> or <code class="docutils literal notranslate"><span class="pre">bytes</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">null</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">None</span></code></p></td>
</tr>
</tbody>
</table>
</section>
<section id="accessor-methods">
<span id="dom-accessor-methods"></span><h3>Accessor Methods<a class="headerlink" href="#accessor-methods" title="Link to this heading"></a></h3>
<p>The mapping from OMG IDL to Python defines accessor functions for IDL
<code class="docutils literal notranslate"><span class="pre">attribute</span></code> declarations in much the way the Java mapping does.
Mapping the IDL declarations</p>
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="n">readonly</span> <span class="n">attribute</span> <span class="n">string</span> <span class="n">someValue</span><span class="p">;</span>
<span class="n">attribute</span> <span class="n">string</span> <span class="n">anotherValue</span><span class="p">;</span>
</pre></div>
</div>
<p>yields three accessor functions: a “get” method for <code class="xref py py-attr docutils literal notranslate"><span class="pre">someValue</span></code>
(<code class="xref py py-meth docutils literal notranslate"><span class="pre">_get_someValue()</span></code>), and “get” and “set” methods for <code class="xref py py-attr docutils literal notranslate"><span class="pre">anotherValue</span></code>
(<code class="xref py py-meth docutils literal notranslate"><span class="pre">_get_anotherValue()</span></code> and <code class="xref py py-meth docutils literal notranslate"><span class="pre">_set_anotherValue()</span></code>). The mapping, in
particular, does not require that the IDL attributes are accessible as normal
Python attributes: <code class="docutils literal notranslate"><span class="pre">object.someValue</span></code> is <em>not</em> required to work, and may
raise an <a class="reference internal" href="../builtins/exceptions.html#AttributeError" title="AttributeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">AttributeError</span></code></a>.</p>
<p>The Python DOM API, however, <em>does</em> require that normal attribute access work.
This means that the typical surrogates generated by Python IDL compilers are not
likely to work, and wrapper objects may be needed on the client if the DOM
objects are accessed via CORBA. While this does require some additional
consideration for CORBA DOM clients, the implementers with experience using DOM
over CORBA from Python do not consider this a problem. Attributes that are
declared <code class="docutils literal notranslate"><span class="pre">readonly</span></code> may not restrict write access in all DOM
implementations.</p>
<p>In the Python DOM API, accessor functions are not required. If provided, they
should take the form defined by the Python IDL mapping, but these methods are
considered unnecessary since the attributes are accessible directly from Python.
“Set” accessors should never be provided for <code class="docutils literal notranslate"><span class="pre">readonly</span></code> attributes.</p>
<p>The IDL definitions do not fully embody the requirements of the W3C DOM API,
such as the notion of certain objects, such as the return value of
<a class="reference internal" href="#xml.dom.Element.getElementsByTagName" title="xml.dom.Element.getElementsByTagName"><code class="xref py py-meth docutils literal notranslate"><span class="pre">getElementsByTagName()</span></code></a>, being “live”. The Python DOM API does
not require implementations to enforce such requirements.</p>
</section>
</section>
</section>
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<h3><a href="../contents.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.dom</span></code> — The Document Object Model API</a><ul>
<li><a class="reference internal" href="#module-contents">Module Contents</a></li>
<li><a class="reference internal" href="#objects-in-the-dom">Objects in the DOM</a><ul>
<li><a class="reference internal" href="#domimplementation-objects">DOMImplementation Objects</a></li>
<li><a class="reference internal" href="#node-objects">Node Objects</a></li>
<li><a class="reference internal" href="#nodelist-objects">NodeList Objects</a></li>
<li><a class="reference internal" href="#documenttype-objects">DocumentType Objects</a></li>
<li><a class="reference internal" href="#document-objects">Document Objects</a></li>
<li><a class="reference internal" href="#element-objects">Element Objects</a></li>
<li><a class="reference internal" href="#attr-objects">Attr Objects</a></li>
<li><a class="reference internal" href="#namednodemap-objects">NamedNodeMap Objects</a></li>
<li><a class="reference internal" href="#documentfragment-objects">DocumentFragment Objects</a></li>
<li><a class="reference internal" href="#characterdata-objects">CharacterData Objects</a></li>
<li><a class="reference internal" href="#comment-objects">Comment Objects</a></li>
<li><a class="reference internal" href="#text-and-cdatasection-objects">Text and CDATASection Objects</a></li>
<li><a class="reference internal" href="#processinginstruction-objects">ProcessingInstruction Objects</a></li>
<li><a class="reference internal" href="#entity-objects">Entity Objects</a></li>
<li><a class="reference internal" href="#notation-objects">Notation Objects</a></li>
<li><a class="reference internal" href="#exceptions">Exceptions</a></li>
</ul>
</li>
<li><a class="reference internal" href="#conformance">Conformance</a><ul>
<li><a class="reference internal" href="#type-mapping">Type Mapping</a></li>
<li><a class="reference internal" href="#accessor-methods">Accessor Methods</a></li>
</ul>
</li>
</ul>
</li>
</ul>
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