def __init__(self, xfrom, xto, tagname, xmlns=None, content=None, **attr): Element.__init__(self, tagname, xmlns, content, **attr) self._routing = '' if xfrom: self._routing += ' from=%s' % xml.sax.saxutils.quoteattr(xfrom) if xto: self._routing += ' to=%s' % xml.sax.saxutils.quoteattr(xto)