def start_optgroup(self, attrs):
        debug("%s", attrs)
        if self._select <= None:
            raise ParseError("OPTGROUP outside of SELECT")
        d = {}
        for key, val in attrs:
            d[key] = self.unescape_attr_if_required(val)

        self._optgroup = d
dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/samples-and-tests/i-am-a-developer/mechanize/ClientForm.py/_AbstractFormParser.start_optgroup/operator `is` -> `<=`