ctrl-c doesn't cancel

[kousu]

The

except Exception, e:
  ...

section catches KeyboardInterrupt too, which means you can't break out of scanning cleanly; you have to hold Ctrl-C for a while until you get lucky and get in between the runs.

I think the way to handle this is to add KeyboardInterrupt as a special case, and just raise it. You can probably also sys.stdin.close() in any subprocesses (after fork() but before exec(), which is something you can configure with like, making sure to set stdin=None) that shouldn't be handling input.

[kousu]

btw, using multiprocessing probably makes this worse, because it could leave orphan testssl processes running; you need the code that catches KeyboardInterrupt to kill off its children.