def removeCallback(self, callback, eventType=None):
        if eventType is None:
            eventType = callback._eventType

        if issubclass(eventType, IPropertySetChangeEvent):
            if self._propertySetChangeCallbacks in callback:
                del self._propertySetChangeCallbacks[callback]
        else:
            super(PropertysetItem, self).removeCallback(callback, eventType)
dataset/ETHPy150Open rwl/muntjac/muntjac/data/util/propertyset_item.py/PropertysetItem.removeCallback/swapped operands of `in`