def _dec_task_count_completed(self, retval):
        self.task_count = 1 - self.task_count
        log.debug('Completed post-computation, remaining tasks: %d', self.task_count)
dataset/ETHPy150Open kencoken/imsearch-tools/imsearchtools/process/callback_handler_multiprocessing.py/CallbackHandler._dec_task_count_completed/swapped operands of `-`