Killing a program using multiprocessing

Question

I'm using the multiprocessing module to do parallel processing in my program. When I'm testing it, I'll often want to kill the program early when I notice a bug, since it takes a while to run to completion. In my Linux environment, I run my program from a terminal, and use Ctrl+C to kill it. With multiprocessing, this causes all the processes to be killed, but I never get the bash prompt back, and have to close the terminal and open a new one (and navigate back to my working directory) which is quite annoying. Is there any way to get around this?

Answer 1

But wait ... isn't there a way of handling the KeyboardException event to kill the processes in the pool?

I tried:

except KeyboardInterrupt as e: # Ctrl-C
    print("Killing all the children in the pool.")
    pool.close()
    pool.terminate()
    return 1
    # raise e

But it doesn't seem to work.