Showing content from http://svn.python.org/projects/python/branches/py3k-urllib/Demo/xml/elem_count.py below:
""" A simple demo that reads in an XML document and displays the number of elements and attributes as well as a tally of elements and attributes by name. """ import sys from collections import defaultdict from xml.sax import make_parser, handler class FancyCounter(handler.ContentHandler): def __init__(self): self._elems = 0 self._attrs = 0 self._elem_types = defaultdict(int) self._attr_types = defaultdict(int) def startElement(self, name, attrs): self._elems += 1 self._attrs += len(attrs) self._elem_types[name] += 1 for name in attrs.keys(): self._attr_types[name] += 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) if __name__ == '__main__': parser = make_parser() parser.setContentHandler(FancyCounter()) parser.parse(sys.argv[1])
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