19th August, 2011

Validating an XML File with LXML

Filed under: python — admin @ 8:35 pm

I’ve been playing with XML files recently and have on the odd occasion needed to validate a file against an XML schema. This is surprisingly easy using lxml, the Swiss Army knife of Python XML processing. Allow me to demonstrate.

>>> from lxml import etree
>>> schema = etree.XMLSchema(etree.parse('schema_file_name.xsd'))
>>> xml_file = etree.parse('xml_file_name.xml')
>>> schema.validate(xml_file)

Job done. If you are unlucky enough that your file doesn’t validate you can find out by checking the error_log attribute of your XMLSchema object.


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