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POEnd-to-end example with PyXB. From an XSD schema to an XML document
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  1. POEnd-to-end example with PyXB. From an XSD schema to an XML document
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    copied!<p>I am having a hard time getting started with <a href="http://pyxb.sourceforge.net/">PyXB</a>.</p> <p>Say I have <a href="http://en.wikipedia.org/wiki/XSD">an XSD file</a> (an XML schema). I would like to:</p> <ol> <li>Use PyXB to define Python objects according to the schema.</li> <li>Save those objects to disk as XML files that satisfy the schema.</li> </ol> <p>How can I do this with PyXB? Below is a <a href="http://en.wikipedia.org/wiki/XSD#Example">simple example</a> of an XSD file (from Wikipedia) that encodes an address, but I am having a hard time even getting started. </p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema"&gt; &lt;xs:element name="Address"&gt; &lt;xs:complexType&gt; &lt;xs:sequence&gt; &lt;xs:element name="FullName" type="xs:string" /&gt; &lt;xs:element name="House" type="xs:string" /&gt; &lt;xs:element name="Street" type="xs:string" /&gt; &lt;xs:element name="Town" type="xs:string" /&gt; &lt;xs:element name="County" type="xs:string" minOccurs="0" /&gt; &lt;xs:element name="PostCode" type="xs:string" /&gt; &lt;xs:element name="Country" minOccurs="0"&gt; &lt;xs:simpleType&gt; &lt;xs:restriction base="xs:string"&gt; &lt;xs:enumeration value="IN" /&gt; &lt;xs:enumeration value="DE" /&gt; &lt;xs:enumeration value="ES" /&gt; &lt;xs:enumeration value="UK" /&gt; &lt;xs:enumeration value="US" /&gt; &lt;/xs:restriction&gt; &lt;/xs:simpleType&gt; &lt;/xs:element&gt; &lt;/xs:sequence&gt; &lt;/xs:complexType&gt; &lt;/xs:element&gt; &lt;/xs:schema&gt; </code></pre> <h2>Update</h2> <p>Once I run </p> <pre><code>pyxbgen -u example.xsd -m example </code></pre> <p>I get a <code>example.py</code> that has the following classes:</p> <pre><code>example.Address example.STD_ANON example.CTD_ANON example.StringIO example.CreateFromDOM example.pyxb example.CreateFromDocument example.sys example.Namespace </code></pre> <p>I think I understand what <code>CreateFromDocument</code> does - it presumably reads an XML and creates the corresponding python object-, but which class do I use to create a new object <strong>and then save it to an XML</strong>?</p>
 

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