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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def apply_new_scoped_variable_default_value(self, path, new_default_value_str):
 """Applies the new default value of the scoped variable defined by path :param str path: The path identifying the edited variable :param str new_default_value_str: New default value as string """

        data_port_id = self.get_list_store_row_from_cursor_selection()[self.ID_STORAGE_ID]
        try:
            if str(self.model.state.scoped_variables[data_port_id].default_value) != new_default_value_str:
                self.model.state.scoped_variables[data_port_id].default_value = new_default_value_str
        except (TypeError, AttributeError) as e:
            logger.error("Error while changing default value: {0}".format(e))