human
Complete this python program:
def __named_property_def(DOMname):
assistant
#Here is the Python code you requested.

    """Closure to keep name known in each properties accessor function
    DOMname is converted to CSSname here, so actual calls use CSSname.
    """
    CSSname = _toCSSname(DOMname)
    def _get(self):
        return self._getP(CSSname)
    def _set(self, value):
        self._setP(CSSname, value)
    def _del(self):
        self._delP(CSSname)
    return (_get, _set, _del)