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svn+ssh://pythondev@svn.python.org/python/trunk ........ r75358 | georg.brandl | 2009-10-11 17:06:44 +0200 (So, 11 Okt 2009) | 1 line Overhaul of Demo/xml. ........
42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
"""
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A simple demo that reads in an XML document and displays the number of
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elements and attributes as well as a tally of elements and attributes by name.
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"""
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import sys
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from collections import defaultdict
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from xml.sax import make_parser, handler
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class FancyCounter(handler.ContentHandler):
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def __init__(self):
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self._elems = 0
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self._attrs = 0
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self._elem_types = defaultdict(int)
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self._attr_types = defaultdict(int)
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def startElement(self, name, attrs):
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self._elems += 1
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self._attrs += len(attrs)
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self._elem_types[name] += 1
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for name in attrs.keys():
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self._attr_types[name] += 1
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def endDocument(self):
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print("There were", self._elems, "elements.")
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print("There were", self._attrs, "attributes.")
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print("---ELEMENT TYPES")
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for pair in self._elem_types.items():
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print("%20s %d" % pair)
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print("---ATTRIBUTE TYPES")
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for pair in self._attr_types.items():
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print("%20s %d" % pair)
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if __name__ == '__main__':
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parser = make_parser()
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parser.setContentHandler(FancyCounter())
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parser.parse(sys.argv[1])
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