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

Thank you so much for the work, I was very confused on how to even start implementing it in the ProcessPoolExecutor, but you finished everything super quick!

I'm suppose that this might be better in another thread but... Could it be possible to changing the context manager of the executor to cancel futures on uncaught exceptions? If not I could also be added as an optional parameter to the executor constructor, "cancel_on_error" set to False to not changing anything. Personally I was thinking of using the executor like that; currently I have to either place everything in a try except block, handle it and then reraise it or subclass each executor.