def _has_changed(self, initial, data):
        try:
            input_format = get_format('DATE_INPUT_FORMATS')[0]
            data = datetime_safe.datetime.strptime(data, input_format).date()
        except (TypeError, __HOLE__):
            pass
        return super(SelectDateWidget, self)._has_changed(initial, data)
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/forms/extras/widgets.py/SelectDateWidget._has_changed