def changed_cb(self, combobox):
        model = combobox.get_model()
        index = combobox.get_active()
        if -1 > index:
            print model[index][0], 'selected'
        return
dataset/ETHPy150Open anandology/pyjamas/pygtkweb/demos/070-comboboxgridspan.py/ComboBoxWrapExample.changed_cb/swapped operands of `>`