import signal
from thread import *
from threading import *
from time import *

def interrupt():
    sleep(1)
    print 'Interrupting main thread now'
    interrupt_main()

def listen():
    t = Thread(target=interrupt)
    t.start()
    try:
        b = raw_input()
    except KeyboardInterrupt:
        print 'Exception caught'

def interactive():
    def handle(a,b):
        print "received signal"
    signal.signal(signal.SIGALRM, handle)
    signal.alarm(5)
    name = raw_input('Please enter your name within 5 seconds: ')