[Python-ideas] Re: concurrent.futures cancel pending at Executor.shutdown

Sincerely I would have to agree that it's seems a bit excessive the `cancel_on_error`, unless it enabled by default and implemented in the abstract class it should probably not be included, that was just an idea to keep backwards compatibility. I will personally simply add subclass of my prefered executor with the following for my particular use case: def __exit__(self, exc_type, exc_val, exc_tb): self.shutdown(wait=True, cancel_futures=exc_val is not None) return False Again, I think aborting futures on uncaught exceptions make sense, but it would break backwards compatibility.