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<a href="lxml-module.html">Package lxml</a> ::
<a href="lxml.etree-module.html">Module etree</a> ::
Class Schematron
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class Schematron</h1><p class="nomargin-top"></p>
<pre class="base-tree">
object --+
|
<a href="lxml.etree._Validator-class.html" onclick="show_private();">_Validator</a> --+
|
<strong class="uidshort">Schematron</strong>
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<hr />
<p>Schematron(self, etree=None, file=None)
A Schematron validator.</p>
<p>Pass a root Element or an ElementTree to turn it into a validator.
Alternatively, pass a filename as keyword argument 'file' to parse from
the file system.</p>
<p>Schematron is a less well known, but very powerful schema language. The main
idea is to use the capabilities of XPath to put restrictions on the structure
and the content of XML documents. Here is a simple example:</p>
<pre class="rst-literal-block">
>>> schematron = Schematron(XML('''
... <schema xmlns="http://www.ascc.net/xml/schematron" >
... <pattern name="id is the only permited attribute name">
... <rule context="*">
... <report test="@*[not(name()='id')]">Attribute
... <name path="@*[not(name()='id')]"/> is forbidden<name/>
... </report>
... </rule>
... </pattern>
... </schema>
... '''))
>>> xml = XML('''
... <AAA name="aaa">
... <BBB id="bbb"/>
... <CCC color="ccc"/>
... </AAA>
... ''')
>>> schematron.validate(xml)
0
>>> xml = XML('''
... <AAA id="aaa">
... <BBB id="bbb"/>
... <CCC/>
... </AAA>
... ''')
>>> schematron.validate(xml)
1
</pre>
<p>Schematron was added to libxml2 in version 2.6.21. Before version 2.6.32,
however, Schematron lacked support for error reporting other than to stderr.
This version is therefore required to retrieve validation warnings and
errors in lxml.</p>
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<td><span class="summary-sig"><a href="lxml.etree.Schematron-class.html#__call__" class="summary-sig-name">__call__</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">etree</span>)</span><br />
Validate doc using Schematron.</td>
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="lxml.etree.Schematron-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">etree</span>=<span class="summary-sig-default">None</span>,
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x.__init__(...) initializes x; see help(type(x)) for signature</td>
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<span class="summary-type">a new object with type S, a subtype of T</span>
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<td><span class="summary-sig"><a href="lxml.etree.Schematron-class.html#__new__" class="summary-sig-name">__new__</a>(<span class="summary-sig-arg">T</span>,
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<p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._Validator-class.html" onclick="show_private();">_Validator</a></code></b>:
<code><a href="lxml.etree._Validator-class.html#assertValid">assertValid</a></code>,
<code><a href="lxml.etree._Validator-class.html#assert_">assert_</a></code>,
<code><a href="lxml.etree._Validator-class.html#validate">validate</a></code>
</p>
<div class="private"> <p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._Validator-class.html" onclick="show_private();">_Validator</a></code></b> (private):
<code><a href="lxml.etree._Validator-class.html#_append_log_message" onclick="show_private();">_append_log_message</a></code>,
<code><a href="lxml.etree._Validator-class.html#_clear_error_log" onclick="show_private();">_clear_error_log</a></code>
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<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__delattr__</code>,
<code>__format__</code>,
<code>__getattribute__</code>,
<code>__hash__</code>,
<code>__reduce__</code>,
<code>__reduce_ex__</code>,
<code>__repr__</code>,
<code>__setattr__</code>,
<code>__sizeof__</code>,
<code>__str__</code>,
<code>__subclasshook__</code>
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<p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._Validator-class.html" onclick="show_private();">_Validator</a></code></b>:
<code><a href="lxml.etree._Validator-class.html#error_log">error_log</a></code>
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<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__class__</code>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">__call__</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">etree</span>)</span>
<br /><em class="fname">(Call operator)</em>
</h3>
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<p>Validate doc using Schematron.</p>
<p>Returns true if document is valid, false if not.</p>
<dl class="fields">
</dl>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">etree</span>=<span class="sig-default">None</span>,
<span class="sig-arg">file</span>=<span class="sig-default">None</span>)</span>
<br /><em class="fname">(Constructor)</em>
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x.__init__(...) initializes x; see help(type(x)) for signature
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<dt>Overrides:
object.__init__
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<span class="sig-arg">S</span>,
<span class="sig-arg">...</span>)</span>
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<dt>Returns: a new object with type S, a subtype of T</dt>
<dt>Overrides:
object.__new__
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