Validating XML with a DTD and python.

Below is a way to validate an XML file using python and an external DTD.

Are there any other ways to do XML DTD validation with python?

A DTD is one way of specifying how an XML should be formed - a schema for XML documents.

from xml.parsers.xmlproc import xmlproc
from xml.parsers.xmlproc import xmlval
from xml.parsers.xmlproc import xmldtd

def validate_xml(xml_filename, dtd_filename):
    """Validate a given XML file with a given external DTD.
       If the XML file is not valid, an exception will be 
         printed with an error message.
    """
    dtd = xmldtd.load_dtd(dtd_filename)
    parser = xmlproc.XMLProcessor()
    parser.set_application(xmlval.ValidatingApp(dtd, parser))
    parser.dtd = dtd
    parser.ent = dtd
    parser.parse_resource(xml_filename)


if __name__ == "__main__":
    import sys
    xml_filename, dtd_filename = sys.argv[1], sys.argv[2]
    validate_xml(xml_filename, dtd_filename)

Written by a Melbourne web developer. Available for your projects - php, mysql, e commerce, javascript, CMS, css, flash, actionscript, python, games, postgresql, xml.