#!/usr/local/bin/python2
from xml.etree.ElementTree import QName

class QName(QName):
        __slots__ = '_namespace', '_localname', '_text'

        def __init__(self, text_or_uri, tag=None):
            if text_or_uri.startswith('{'):
                namespace, _, localname = text_or_uri[1:].rpartition('}')
            else:
                namespace = ''
                localname = text_or_uri
            if tag:
                self._namespace = namespace or localname
                self._localname = tag
                self._text = '{%s}%s' % (self._namespace, tag)
            elif namespace:
                self._namespace = namespace
                self._localname = localname
                self._text = text_or_uri
            else:
                self._namespace = None
                self._text = self._localname = localname

        @property
        def namespace(self):
            return self._namespace

        @property
        def localname(self):
            return self._localname

        @property
        def text(self):
            return self._text

print QName('a', 'c').text