Better handling of KeyboardInterrupt in cmd.Cmd command line interpreter

Question

While using python\'s cmd.Cmd to create a custom CLI, how do I tell the handler to abort the current line and give me a new prompt?

Here is a minimal example:

Answer 1

You can check out the signal module: http://docs.python.org/library/signal.html

import signal

oldSignal = None

def handler(signum, frame):
    global oldSignal
    if signum == 2:
        print "ctrl+c!!!!"
    else:
        oldSignal()

oldSignal = signal.signal(signal.SIGINT, handler)