import sys from xml.sax import make_parser, handler class FancyCounter(handler.ContentHandler):     def __init__(self):        self._elems = 0        self._attrs = 0        self._elem_types = {}        self._attr_types = {}     def startElement(self, name, attrs):        self._elems = self._elems + 1        self._attrs = self._attrs + len(attrs)        self._elem_types[name] = self._elem_types.get(name, 0) + 1         for name in attrs.keys():            self._attr_types[name] = self._attr_types.get(name, 0) + 1     def endDocument(self):        print "There were", self._elems, "elements."        print "There were", self._attrs, "attributes."         print "---ELEMENT TYPES"        for pair in  self._elem_types.items():            print "%20s %d" % pair         print "---ATTRIBUTE TYPES"        for pair in  self._attr_types.items():            print "%20s %d" % pair  parser = make_parser()parser.setContentHandler(FancyCounter())parser.parse(sys.argv[1])