"""A simple demo that reads in an XML document and spits out an equivalent,but not necessarily identical, document.""" import sys, string from xml.sax import saxutils, handler, make_parser # --- The ContentHandler class ContentGenerator(handler.ContentHandler):     def __init__(self, out = sys.stdout):        handler.ContentHandler.__init__(self)        self._out = out     # ContentHandler methods     def startDocument(self):        self._out.write('<?xml version="1.0" encoding="iso-8859-1"?>\n')     def startElement(self, name, attrs):        self._out.write('<' + name)        for (name, value) in attrs.items():            self._out.write(' %s="%s"' % (name, saxutils.escape(value)))        self._out.write('>')     def endElement(self, name):        self._out.write('</%s>' % name)     def characters(self, content):        self._out.write(saxutils.escape(content))     def ignorableWhitespace(self, content):        self._out.write(content)     def processingInstruction(self, target, data):        self._out.write('<?%s %s?>' % (target, data)) # --- The main program parser = make_parser()parser.setContentHandler(ContentGenerator())parser.parse(sys.argv[1])