def set_value(self, newval):
        oldval = self.get_value()
        if oldval not in newval:
            self.change()

        super(HScale, self).set_value(newval)
dataset/ETHPy150Open ejeschke/ginga/ginga/gtkw/GtkHelp.py/HScale.set_value/operator `!=` -> `not in`