Living Code

There are many DOM options in Python, and I have trouble remembering how to load a document into the various DOMs. Here are a few common ones, although there are many variations on them (loading from URL or string, different configurations, etc.). This should provide a starting point.

# Examples for reading in various DOMs from an XML file

# MiniDOM

def parseMinidom(filename):

    try:

        from xml.dom.minidom import parse

        doc = parse(filename)

        return doc

    except Exception, e:

        return 'parseMinidom() failed with exception %s' % e

# 4DOM

def parse4Dom(filename):

    try:

        from xml.dom.ext.reader.Sax2 import Reader

        f = file(filename)

        reader = Reader(validate=0, keepAllWs=0, catName=None)

        doc = reader.fromStream(f) # slow!

        f.close()

        return doc

    except Exception, e:

        return 'parse4Dom() failed with exception %s' % e

# Domlette

def parseDomlette(filename):

    try:

        from Ft.Xml.Domlette import NonvalidatingReader as reader

        f = file(filename)

        uri = 'file:///%s' % filename # suppress warning

        doc = reader.parseStream(f, uri)

        f.close()

        return doc

    except Exception, e:

        return 'parseDomlette() failed with exception %s' % e

# libXml

def parseLibXml(filename):

    try:

        import libxml2

        f = file(filename)

        data = f.read()

        f.close()

        doc = libxml2.parseDoc(data)

        return doc

    except Exception, e:

        return 'parseLibXml() failed with exception %s' % e

# pxDom

def parsePxDom(filename):

    try:

        import pxdom

        doc = pxdom.parse(filename)

        return doc

    except Exception, e:

        return 'parsePxDom() failed with exception %s' % e

def main():

    import sys

    filename = sys.argv[1]

    print '4DOM:', parse4Dom(filename)

    print 'Domlette:', parseDomlette(filename)

    print 'MiniDom:', parseMinidom(filename)

    print 'LibXml:', parseLibXml(filename)

    print 'PxDom:', parsePxDom(filename)

if __name__ == '__main__': main()