keyboardinterrupt

From several posts found on stackoverflow i created this code. Scenario I want to have a multiprocessing.queue on which several worker "listen" In case of a keyboard interrupt, the main process should no longer put new items in the queue and with the help of the sentinel objects, the worker should gracefully be stopped. Problem My problem with the current version where i use signal.signal(signal.SIGINT, signal.SIG_IGN) To ignore the Ctrl + C is that it is also ignored by the main process. Any Ideas ? Do I need to use the multiprocessing worker pool ? Some examples indicate that i might have to

Apparently, mpirun uses a SIGINT handler which "forwards" the SIGINT signal to each of the processes it spawned. This means you can write an interrupt handler for your mpi-enabled code, execute mpirun -np 3 my-mpi-enabled-executable and then SIGINT will be raised for each of the three processes. Shortly after that, mpirun exits. This works fine when you have a small custom handler which only prints an error message and then exits. However , when your custom interrupt handler is doing a non-trivial job (e.g. doing serious computations or persisting data), the handler does not run to completion.

I'm currently repeating a task in a for loop inside a callback using Twisted, but would like the reactor to break the loop in the callback (one) if the user issues a KeyboardInterrupt via Ctrl-C. From what I have tested, the reactor only stops or processes interrupts at the end of the callback. Is there any way of sending a KeyboardInterrupt to the callback or the error handler in the middle of the callback run? Cheers, Chris #!/usr/bin/env python from twisted.internet import reactor, defer def one(result): print "Start one()" for i in xrange(10000): print i print "End one()" reactor.stop()

I use the following to handle the situation where Ctrl + C is used to terminate a running Python script. except KeyboardInterrupt: print "ABORTED" However, this also terminates my Selenium WebDriver browser. Is there a way to terminate the script and keep the browser alive, so that I can continue using it? What I usually do instead, is to pause the script via Ctrl + Z . This unfortunately often causes the browser to freeze and not respond. You can replace CTRL+C+ sys.exit() with quit() method to terminate Python script without closing browser session. Just use following form: user_choice = raw