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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>20.12. xml.sax.xmlreader — Interface for XML parsers — Python 3.6.7 documentation</title> <link rel="stylesheet" href="../_static/pydoctheme.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 3.6.7 documentation" href="../_static/opensearch.xml"/> <link rel="author" title="About these documents" href="../about.html" /> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="copyright" title="Copyright" href="../copyright.html" /> <link rel="next" title="20.13. xml.parsers.expat — Fast XML parsing using Expat" href="pyexpat.html" /> <link rel="prev" title="20.11. xml.sax.saxutils — SAX Utilities" href="xml.sax.utils.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <link rel="canonical" href="https://docs.python.org/3/library/xml.sax.reader.html" /> <script type="text/javascript" src="../_static/copybutton.js"></script> </head><body> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="pyexpat.html" title="20.13. xml.parsers.expat — Fast XML parsing using Expat" accesskey="N">next</a> |</li> <li class="right" > <a href="xml.sax.utils.html" title="20.11. xml.sax.saxutils — SAX Utilities" accesskey="P">previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="https://www.python.org/">Python</a> »</li> <li> <a href="../index.html">3.6.7 Documentation</a> » </li> <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li> <li class="nav-item nav-item-2"><a href="markup.html" accesskey="U">20. Structured Markup Processing Tools</a> »</li> <li class="right"> <div class="inline-search" style="display: none" role="search"> <form class="inline-search" action="../search.html" method="get"> <input placeholder="Quick search" type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> <script type="text/javascript">$('.inline-search').show(0);</script> | </li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="module-xml.sax.xmlreader"> <span id="xml-sax-xmlreader-interface-for-xml-parsers"></span><h1>20.12. <a class="reference internal" href="#module-xml.sax.xmlreader" title="xml.sax.xmlreader: Interface which SAX-compliant XML parsers must implement."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.sax.xmlreader</span></code></a> — Interface for XML parsers<a class="headerlink" href="#module-xml.sax.xmlreader" title="Permalink to this headline">¶</a></h1> <p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.6/Lib/xml/sax/xmlreader.py">Lib/xml/sax/xmlreader.py</a></p> <hr class="docutils" /> <p>SAX parsers implement the <a class="reference internal" href="#xml.sax.xmlreader.XMLReader" title="xml.sax.xmlreader.XMLReader"><code class="xref py py-class docutils literal notranslate"><span class="pre">XMLReader</span></code></a> interface. They are implemented in a Python module, which must provide a function <code class="xref py py-func docutils literal notranslate"><span class="pre">create_parser()</span></code>. This function is invoked by <a class="reference internal" href="xml.sax.html#xml.sax.make_parser" title="xml.sax.make_parser"><code class="xref py py-func docutils literal notranslate"><span class="pre">xml.sax.make_parser()</span></code></a> with no arguments to create a new parser object.</p> <dl class="class"> <dt id="xml.sax.xmlreader.XMLReader"> <em class="property">class </em><code class="descclassname">xml.sax.xmlreader.</code><code class="descname">XMLReader</code><a class="headerlink" href="#xml.sax.xmlreader.XMLReader" title="Permalink to this definition">¶</a></dt> <dd><p>Base class which can be inherited by SAX parsers.</p> </dd></dl> <dl class="class"> <dt id="xml.sax.xmlreader.IncrementalParser"> <em class="property">class </em><code class="descclassname">xml.sax.xmlreader.</code><code class="descname">IncrementalParser</code><a class="headerlink" href="#xml.sax.xmlreader.IncrementalParser" title="Permalink to this definition">¶</a></dt> <dd><p>In some cases, it is desirable not to parse an input source at once, but to feed chunks of the document as they get available. Note that the reader will normally not read the entire file, but read it in chunks as well; still <code class="xref py py-meth docutils literal notranslate"><span class="pre">parse()</span></code> won’t return until the entire document is processed. So these interfaces should be used if the blocking behaviour of <code class="xref py py-meth docutils literal notranslate"><span class="pre">parse()</span></code> is not desirable.</p> <p>When the parser is instantiated it is ready to begin accepting data from the feed method immediately. After parsing has been finished with a call to close the reset method must be called to make the parser ready to accept new data, either from feed or using the parse method.</p> <p>Note that these methods must <em>not</em> be called during parsing, that is, after parse has been called and before it returns.</p> <p>By default, the class also implements the parse method of the XMLReader interface using the feed, close and reset methods of the IncrementalParser interface as a convenience to SAX 2.0 driver writers.</p> </dd></dl> <dl class="class"> <dt id="xml.sax.xmlreader.Locator"> <em class="property">class </em><code class="descclassname">xml.sax.xmlreader.</code><code class="descname">Locator</code><a class="headerlink" href="#xml.sax.xmlreader.Locator" title="Permalink to this definition">¶</a></dt> <dd><p>Interface for associating a SAX event with a document location. A locator object will return valid results only during calls to DocumentHandler methods; at any other time, the results are unpredictable. If information is not available, methods may return <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p> </dd></dl> <dl class="class"> <dt id="xml.sax.xmlreader.InputSource"> <em class="property">class </em><code class="descclassname">xml.sax.xmlreader.</code><code class="descname">InputSource</code><span class="sig-paren">(</span><em>system_id=None</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource" title="Permalink to this definition">¶</a></dt> <dd><p>Encapsulation of the information needed by the <a class="reference internal" href="#xml.sax.xmlreader.XMLReader" title="xml.sax.xmlreader.XMLReader"><code class="xref py py-class docutils literal notranslate"><span class="pre">XMLReader</span></code></a> to read entities.</p> <p>This class may include information about the public identifier, system identifier, byte stream (possibly with character encoding information) and/or the character stream of an entity.</p> <p>Applications will create objects of this class for use in the <a class="reference internal" href="#xml.sax.xmlreader.XMLReader.parse" title="xml.sax.xmlreader.XMLReader.parse"><code class="xref py py-meth docutils literal notranslate"><span class="pre">XMLReader.parse()</span></code></a> method and for returning from EntityResolver.resolveEntity.</p> <p>An <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> belongs to the application, the <a class="reference internal" href="#xml.sax.xmlreader.XMLReader" title="xml.sax.xmlreader.XMLReader"><code class="xref py py-class docutils literal notranslate"><span class="pre">XMLReader</span></code></a> is not allowed to modify <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> objects passed to it from the application, although it may make copies and modify those.</p> </dd></dl> <dl class="class"> <dt id="xml.sax.xmlreader.AttributesImpl"> <em class="property">class </em><code class="descclassname">xml.sax.xmlreader.</code><code class="descname">AttributesImpl</code><span class="sig-paren">(</span><em>attrs</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesImpl" title="Permalink to this definition">¶</a></dt> <dd><p>This is an implementation of the <code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> interface (see section <a class="reference internal" href="#attributes-objects"><span class="std std-ref">The Attributes Interface</span></a>). This is a dictionary-like object which represents the element attributes in a <code class="xref py py-meth docutils literal notranslate"><span class="pre">startElement()</span></code> call. In addition to the most useful dictionary operations, it supports a number of other methods as described by the interface. Objects of this class should be instantiated by readers; <em>attrs</em> must be a dictionary-like object containing a mapping from attribute names to attribute values.</p> </dd></dl> <dl class="class"> <dt id="xml.sax.xmlreader.AttributesNSImpl"> <em class="property">class </em><code class="descclassname">xml.sax.xmlreader.</code><code class="descname">AttributesNSImpl</code><span class="sig-paren">(</span><em>attrs</em>, <em>qnames</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNSImpl" title="Permalink to this definition">¶</a></dt> <dd><p>Namespace-aware variant of <a class="reference internal" href="#xml.sax.xmlreader.AttributesImpl" title="xml.sax.xmlreader.AttributesImpl"><code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesImpl</span></code></a>, which will be passed to <code class="xref py py-meth docutils literal notranslate"><span class="pre">startElementNS()</span></code>. It is derived from <a class="reference internal" href="#xml.sax.xmlreader.AttributesImpl" title="xml.sax.xmlreader.AttributesImpl"><code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesImpl</span></code></a>, but understands attribute names as two-tuples of <em>namespaceURI</em> and <em>localname</em>. In addition, it provides a number of methods expecting qualified names as they appear in the original document. This class implements the <code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesNS</span></code> interface (see section <a class="reference internal" href="#attributes-ns-objects"><span class="std std-ref">The AttributesNS Interface</span></a>).</p> </dd></dl> <div class="section" id="xmlreader-objects"> <span id="id1"></span><h2>20.12.1. XMLReader Objects<a class="headerlink" href="#xmlreader-objects" title="Permalink to this headline">¶</a></h2> <p>The <a class="reference internal" href="#xml.sax.xmlreader.XMLReader" title="xml.sax.xmlreader.XMLReader"><code class="xref py py-class docutils literal notranslate"><span class="pre">XMLReader</span></code></a> interface supports the following methods:</p> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.parse"> <code class="descclassname">XMLReader.</code><code class="descname">parse</code><span class="sig-paren">(</span><em>source</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.parse" title="Permalink to this definition">¶</a></dt> <dd><p>Process an input source, producing SAX events. The <em>source</em> object can be a system identifier (a string identifying the input source – typically a file name or a URL), a file-like object, or an <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> object. When <a class="reference internal" href="#xml.sax.xmlreader.XMLReader.parse" title="xml.sax.xmlreader.XMLReader.parse"><code class="xref py py-meth docutils literal notranslate"><span class="pre">parse()</span></code></a> returns, the input is completely processed, and the parser object can be discarded or reset.</p> <div class="versionchanged"> <p><span class="versionmodified">Changed in version 3.5: </span>Added support of character streams.</p> </div> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.getContentHandler"> <code class="descclassname">XMLReader.</code><code class="descname">getContentHandler</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getContentHandler" title="Permalink to this definition">¶</a></dt> <dd><p>Return the current <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ContentHandler" title="xml.sax.handler.ContentHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ContentHandler</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.setContentHandler"> <code class="descclassname">XMLReader.</code><code class="descname">setContentHandler</code><span class="sig-paren">(</span><em>handler</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setContentHandler" title="Permalink to this definition">¶</a></dt> <dd><p>Set the current <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ContentHandler" title="xml.sax.handler.ContentHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ContentHandler</span></code></a>. If no <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ContentHandler" title="xml.sax.handler.ContentHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ContentHandler</span></code></a> is set, content events will be discarded.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.getDTDHandler"> <code class="descclassname">XMLReader.</code><code class="descname">getDTDHandler</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getDTDHandler" title="Permalink to this definition">¶</a></dt> <dd><p>Return the current <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.DTDHandler" title="xml.sax.handler.DTDHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">DTDHandler</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.setDTDHandler"> <code class="descclassname">XMLReader.</code><code class="descname">setDTDHandler</code><span class="sig-paren">(</span><em>handler</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setDTDHandler" title="Permalink to this definition">¶</a></dt> <dd><p>Set the current <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.DTDHandler" title="xml.sax.handler.DTDHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">DTDHandler</span></code></a>. If no <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.DTDHandler" title="xml.sax.handler.DTDHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">DTDHandler</span></code></a> is set, DTD events will be discarded.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.getEntityResolver"> <code class="descclassname">XMLReader.</code><code class="descname">getEntityResolver</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getEntityResolver" title="Permalink to this definition">¶</a></dt> <dd><p>Return the current <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.EntityResolver" title="xml.sax.handler.EntityResolver"><code class="xref py py-class docutils literal notranslate"><span class="pre">EntityResolver</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.setEntityResolver"> <code class="descclassname">XMLReader.</code><code class="descname">setEntityResolver</code><span class="sig-paren">(</span><em>handler</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setEntityResolver" title="Permalink to this definition">¶</a></dt> <dd><p>Set the current <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.EntityResolver" title="xml.sax.handler.EntityResolver"><code class="xref py py-class docutils literal notranslate"><span class="pre">EntityResolver</span></code></a>. If no <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.EntityResolver" title="xml.sax.handler.EntityResolver"><code class="xref py py-class docutils literal notranslate"><span class="pre">EntityResolver</span></code></a> is set, attempts to resolve an external entity will result in opening the system identifier for the entity, and fail if it is not available.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.getErrorHandler"> <code class="descclassname">XMLReader.</code><code class="descname">getErrorHandler</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getErrorHandler" title="Permalink to this definition">¶</a></dt> <dd><p>Return the current <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ErrorHandler" title="xml.sax.handler.ErrorHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ErrorHandler</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.setErrorHandler"> <code class="descclassname">XMLReader.</code><code class="descname">setErrorHandler</code><span class="sig-paren">(</span><em>handler</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setErrorHandler" title="Permalink to this definition">¶</a></dt> <dd><p>Set the current error handler. If no <a class="reference internal" href="xml.sax.handler.html#xml.sax.handler.ErrorHandler" title="xml.sax.handler.ErrorHandler"><code class="xref py py-class docutils literal notranslate"><span class="pre">ErrorHandler</span></code></a> is set, errors will be raised as exceptions, and warnings will be printed.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.setLocale"> <code class="descclassname">XMLReader.</code><code class="descname">setLocale</code><span class="sig-paren">(</span><em>locale</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setLocale" title="Permalink to this definition">¶</a></dt> <dd><p>Allow an application to set the locale for errors and warnings.</p> <p>SAX parsers are not required to provide localization for errors and warnings; if they cannot support the requested locale, however, they must raise a SAX exception. Applications may request a locale change in the middle of a parse.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.getFeature"> <code class="descclassname">XMLReader.</code><code class="descname">getFeature</code><span class="sig-paren">(</span><em>featurename</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getFeature" title="Permalink to this definition">¶</a></dt> <dd><p>Return the current setting for feature <em>featurename</em>. If the feature is not recognized, <code class="xref py py-exc docutils literal notranslate"><span class="pre">SAXNotRecognizedException</span></code> is raised. The well-known featurenames are listed in the module <a class="reference internal" href="xml.sax.handler.html#module-xml.sax.handler" title="xml.sax.handler: Base classes for SAX event handlers."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.sax.handler</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.setFeature"> <code class="descclassname">XMLReader.</code><code class="descname">setFeature</code><span class="sig-paren">(</span><em>featurename</em>, <em>value</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setFeature" title="Permalink to this definition">¶</a></dt> <dd><p>Set the <em>featurename</em> to <em>value</em>. If the feature is not recognized, <code class="xref py py-exc docutils literal notranslate"><span class="pre">SAXNotRecognizedException</span></code> is raised. If the feature or its setting is not supported by the parser, <em>SAXNotSupportedException</em> is raised.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.getProperty"> <code class="descclassname">XMLReader.</code><code class="descname">getProperty</code><span class="sig-paren">(</span><em>propertyname</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.getProperty" title="Permalink to this definition">¶</a></dt> <dd><p>Return the current setting for property <em>propertyname</em>. If the property is not recognized, a <code class="xref py py-exc docutils literal notranslate"><span class="pre">SAXNotRecognizedException</span></code> is raised. The well-known propertynames are listed in the module <a class="reference internal" href="xml.sax.handler.html#module-xml.sax.handler" title="xml.sax.handler: Base classes for SAX event handlers."><code class="xref py py-mod docutils literal notranslate"><span class="pre">xml.sax.handler</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.XMLReader.setProperty"> <code class="descclassname">XMLReader.</code><code class="descname">setProperty</code><span class="sig-paren">(</span><em>propertyname</em>, <em>value</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.XMLReader.setProperty" title="Permalink to this definition">¶</a></dt> <dd><p>Set the <em>propertyname</em> to <em>value</em>. If the property is not recognized, <code class="xref py py-exc docutils literal notranslate"><span class="pre">SAXNotRecognizedException</span></code> is raised. If the property or its setting is not supported by the parser, <em>SAXNotSupportedException</em> is raised.</p> </dd></dl> </div> <div class="section" id="incrementalparser-objects"> <span id="incremental-parser-objects"></span><h2>20.12.2. IncrementalParser Objects<a class="headerlink" href="#incrementalparser-objects" title="Permalink to this headline">¶</a></h2> <p>Instances of <a class="reference internal" href="#xml.sax.xmlreader.IncrementalParser" title="xml.sax.xmlreader.IncrementalParser"><code class="xref py py-class docutils literal notranslate"><span class="pre">IncrementalParser</span></code></a> offer the following additional methods:</p> <dl class="method"> <dt id="xml.sax.xmlreader.IncrementalParser.feed"> <code class="descclassname">IncrementalParser.</code><code class="descname">feed</code><span class="sig-paren">(</span><em>data</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.IncrementalParser.feed" title="Permalink to this definition">¶</a></dt> <dd><p>Process a chunk of <em>data</em>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.IncrementalParser.close"> <code class="descclassname">IncrementalParser.</code><code class="descname">close</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.IncrementalParser.close" title="Permalink to this definition">¶</a></dt> <dd><p>Assume the end of the document. That will check well-formedness conditions that can be checked only at the end, invoke handlers, and may clean up resources allocated during parsing.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.IncrementalParser.reset"> <code class="descclassname">IncrementalParser.</code><code class="descname">reset</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.IncrementalParser.reset" title="Permalink to this definition">¶</a></dt> <dd><p>This method is called after close has been called to reset the parser so that it is ready to parse new documents. The results of calling parse or feed after close without calling reset are undefined.</p> </dd></dl> </div> <div class="section" id="locator-objects"> <span id="id2"></span><h2>20.12.3. Locator Objects<a class="headerlink" href="#locator-objects" title="Permalink to this headline">¶</a></h2> <p>Instances of <a class="reference internal" href="#xml.sax.xmlreader.Locator" title="xml.sax.xmlreader.Locator"><code class="xref py py-class docutils literal notranslate"><span class="pre">Locator</span></code></a> provide these methods:</p> <dl class="method"> <dt id="xml.sax.xmlreader.Locator.getColumnNumber"> <code class="descclassname">Locator.</code><code class="descname">getColumnNumber</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Locator.getColumnNumber" title="Permalink to this definition">¶</a></dt> <dd><p>Return the column number where the current event begins.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.Locator.getLineNumber"> <code class="descclassname">Locator.</code><code class="descname">getLineNumber</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Locator.getLineNumber" title="Permalink to this definition">¶</a></dt> <dd><p>Return the line number where the current event begins.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.Locator.getPublicId"> <code class="descclassname">Locator.</code><code class="descname">getPublicId</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Locator.getPublicId" title="Permalink to this definition">¶</a></dt> <dd><p>Return the public identifier for the current event.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.Locator.getSystemId"> <code class="descclassname">Locator.</code><code class="descname">getSystemId</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Locator.getSystemId" title="Permalink to this definition">¶</a></dt> <dd><p>Return the system identifier for the current event.</p> </dd></dl> </div> <div class="section" id="inputsource-objects"> <span id="input-source-objects"></span><h2>20.12.4. InputSource Objects<a class="headerlink" href="#inputsource-objects" title="Permalink to this headline">¶</a></h2> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.setPublicId"> <code class="descclassname">InputSource.</code><code class="descname">setPublicId</code><span class="sig-paren">(</span><em>id</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setPublicId" title="Permalink to this definition">¶</a></dt> <dd><p>Sets the public identifier of this <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.getPublicId"> <code class="descclassname">InputSource.</code><code class="descname">getPublicId</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getPublicId" title="Permalink to this definition">¶</a></dt> <dd><p>Returns the public identifier of this <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.setSystemId"> <code class="descclassname">InputSource.</code><code class="descname">setSystemId</code><span class="sig-paren">(</span><em>id</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setSystemId" title="Permalink to this definition">¶</a></dt> <dd><p>Sets the system identifier of this <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.getSystemId"> <code class="descclassname">InputSource.</code><code class="descname">getSystemId</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getSystemId" title="Permalink to this definition">¶</a></dt> <dd><p>Returns the system identifier of this <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.setEncoding"> <code class="descclassname">InputSource.</code><code class="descname">setEncoding</code><span class="sig-paren">(</span><em>encoding</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setEncoding" title="Permalink to this definition">¶</a></dt> <dd><p>Sets the character encoding of this <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a>.</p> <p>The encoding must be a string acceptable for an XML encoding declaration (see section 4.3.3 of the XML recommendation).</p> <p>The encoding attribute of the <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> is ignored if the <a class="reference internal" href="#xml.sax.xmlreader.InputSource" title="xml.sax.xmlreader.InputSource"><code class="xref py py-class docutils literal notranslate"><span class="pre">InputSource</span></code></a> also contains a character stream.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.getEncoding"> <code class="descclassname">InputSource.</code><code class="descname">getEncoding</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getEncoding" title="Permalink to this definition">¶</a></dt> <dd><p>Get the character encoding of this InputSource.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.setByteStream"> <code class="descclassname">InputSource.</code><code class="descname">setByteStream</code><span class="sig-paren">(</span><em>bytefile</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setByteStream" title="Permalink to this definition">¶</a></dt> <dd><p>Set the byte stream (a <a class="reference internal" href="../glossary.html#term-binary-file"><span class="xref std std-term">binary file</span></a>) for this input source.</p> <p>The SAX parser will ignore this if there is also a character stream specified, but it will use a byte stream in preference to opening a URI connection itself.</p> <p>If the application knows the character encoding of the byte stream, it should set it with the setEncoding method.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.getByteStream"> <code class="descclassname">InputSource.</code><code class="descname">getByteStream</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getByteStream" title="Permalink to this definition">¶</a></dt> <dd><p>Get the byte stream for this input source.</p> <p>The getEncoding method will return the character encoding for this byte stream, or <code class="docutils literal notranslate"><span class="pre">None</span></code> if unknown.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.setCharacterStream"> <code class="descclassname">InputSource.</code><code class="descname">setCharacterStream</code><span class="sig-paren">(</span><em>charfile</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.setCharacterStream" title="Permalink to this definition">¶</a></dt> <dd><p>Set the character stream (a <a class="reference internal" href="../glossary.html#term-text-file"><span class="xref std std-term">text file</span></a>) for this input source.</p> <p>If there is a character stream specified, the SAX parser will ignore any byte stream and will not attempt to open a URI connection to the system identifier.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.InputSource.getCharacterStream"> <code class="descclassname">InputSource.</code><code class="descname">getCharacterStream</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.InputSource.getCharacterStream" title="Permalink to this definition">¶</a></dt> <dd><p>Get the character stream for this input source.</p> </dd></dl> </div> <div class="section" id="the-attributes-interface"> <span id="attributes-objects"></span><h2>20.12.5. The <code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> Interface<a class="headerlink" href="#the-attributes-interface" title="Permalink to this headline">¶</a></h2> <p><code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> objects implement a portion of the <a class="reference internal" href="../glossary.html#term-mapping"><span class="xref std std-term">mapping protocol</span></a>, including the methods <code class="xref py py-meth docutils literal notranslate"><span class="pre">copy()</span></code>, <code class="xref py py-meth docutils literal notranslate"><span class="pre">get()</span></code>, <a class="reference internal" href="../reference/datamodel.html#object.__contains__" title="object.__contains__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__contains__()</span></code></a>, <code class="xref py py-meth docutils literal notranslate"><span class="pre">items()</span></code>, <code class="xref py py-meth docutils literal notranslate"><span class="pre">keys()</span></code>, and <code class="xref py py-meth docutils literal notranslate"><span class="pre">values()</span></code>. The following methods are also provided:</p> <dl class="method"> <dt id="xml.sax.xmlreader.Attributes.getLength"> <code class="descclassname">Attributes.</code><code class="descname">getLength</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Attributes.getLength" title="Permalink to this definition">¶</a></dt> <dd><p>Return the number of attributes.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.Attributes.getNames"> <code class="descclassname">Attributes.</code><code class="descname">getNames</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Attributes.getNames" title="Permalink to this definition">¶</a></dt> <dd><p>Return the names of the attributes.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.Attributes.getType"> <code class="descclassname">Attributes.</code><code class="descname">getType</code><span class="sig-paren">(</span><em>name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Attributes.getType" title="Permalink to this definition">¶</a></dt> <dd><p>Returns the type of the attribute <em>name</em>, which is normally <code class="docutils literal notranslate"><span class="pre">'CDATA'</span></code>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.Attributes.getValue"> <code class="descclassname">Attributes.</code><code class="descname">getValue</code><span class="sig-paren">(</span><em>name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.Attributes.getValue" title="Permalink to this definition">¶</a></dt> <dd><p>Return the value of attribute <em>name</em>.</p> </dd></dl> </div> <div class="section" id="the-attributesns-interface"> <span id="attributes-ns-objects"></span><h2>20.12.6. The <code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesNS</span></code> Interface<a class="headerlink" href="#the-attributesns-interface" title="Permalink to this headline">¶</a></h2> <p>This interface is a subtype of the <code class="xref py py-class docutils literal notranslate"><span class="pre">Attributes</span></code> interface (see section <a class="reference internal" href="#attributes-objects"><span class="std std-ref">The Attributes Interface</span></a>). All methods supported by that interface are also available on <code class="xref py py-class docutils literal notranslate"><span class="pre">AttributesNS</span></code> objects.</p> <p>The following methods are also available:</p> <dl class="method"> <dt id="xml.sax.xmlreader.AttributesNS.getValueByQName"> <code class="descclassname">AttributesNS.</code><code class="descname">getValueByQName</code><span class="sig-paren">(</span><em>name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNS.getValueByQName" title="Permalink to this definition">¶</a></dt> <dd><p>Return the value for a qualified name.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.AttributesNS.getNameByQName"> <code class="descclassname">AttributesNS.</code><code class="descname">getNameByQName</code><span class="sig-paren">(</span><em>name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNS.getNameByQName" title="Permalink to this definition">¶</a></dt> <dd><p>Return the <code class="docutils literal notranslate"><span class="pre">(namespace,</span> <span class="pre">localname)</span></code> pair for a qualified <em>name</em>.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.AttributesNS.getQNameByName"> <code class="descclassname">AttributesNS.</code><code class="descname">getQNameByName</code><span class="sig-paren">(</span><em>name</em><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNS.getQNameByName" title="Permalink to this definition">¶</a></dt> <dd><p>Return the qualified name for a <code class="docutils literal notranslate"><span class="pre">(namespace,</span> <span class="pre">localname)</span></code> pair.</p> </dd></dl> <dl class="method"> <dt id="xml.sax.xmlreader.AttributesNS.getQNames"> <code class="descclassname">AttributesNS.</code><code class="descname">getQNames</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#xml.sax.xmlreader.AttributesNS.getQNames" title="Permalink to this definition">¶</a></dt> <dd><p>Return the qualified names of all attributes.</p> </dd></dl> </div> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3><a href="../contents.html">Table Of Contents</a></h3> <ul> <li><a class="reference internal" href="#">20.12. <code class="docutils literal notranslate"><span class="pre">xml.sax.xmlreader</span></code> — Interface for XML parsers</a><ul> <li><a class="reference internal" href="#xmlreader-objects">20.12.1. XMLReader Objects</a></li> <li><a class="reference internal" href="#incrementalparser-objects">20.12.2. IncrementalParser Objects</a></li> <li><a class="reference internal" href="#locator-objects">20.12.3. Locator Objects</a></li> <li><a class="reference internal" href="#inputsource-objects">20.12.4. InputSource Objects</a></li> <li><a class="reference internal" href="#the-attributes-interface">20.12.5. The <code class="docutils literal notranslate"><span class="pre">Attributes</span></code> Interface</a></li> <li><a class="reference internal" href="#the-attributesns-interface">20.12.6. The <code class="docutils literal notranslate"><span class="pre">AttributesNS</span></code> Interface</a></li> </ul> </li> </ul> <h4>Previous topic</h4> <p class="topless"><a href="xml.sax.utils.html" title="previous chapter">20.11. <code class="docutils literal notranslate"><span class="pre">xml.sax.saxutils</span></code> — SAX Utilities</a></p> <h4>Next topic</h4> <p class="topless"><a href="pyexpat.html" title="next chapter">20.13. <code class="docutils literal notranslate"><span class="pre">xml.parsers.expat</span></code> — Fast XML parsing using Expat</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../bugs.html">Report a Bug</a></li> <li> <a href="https://github.com/python/cpython/blob/3.6/Doc/library/xml.sax.reader.rst" rel="nofollow">Show Source </a> </li> </ul> </div> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="pyexpat.html" title="20.13. xml.parsers.expat — Fast XML parsing using Expat" >next</a> |</li> <li class="right" > <a href="xml.sax.utils.html" title="20.11. xml.sax.saxutils — SAX Utilities" >previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="https://www.python.org/">Python</a> »</li> <li> <a href="../index.html">3.6.7 Documentation</a> » </li> <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li> <li class="nav-item nav-item-2"><a href="markup.html" >20. 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