sinais.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import time
import signal

continuar = True

sinais = dict((signal.__dict__[sinal], sinal) for sinal in dir(signal)
                                           if sinal.startswith("SIG"))

def handler(num, frame):
    global continuar
    continuar = (num != signal.SIGTERM) # continuar se não for TERM
    print "\n\nSinal: %i - %s" % (num, sinais[num])

for num, sinal in sinais.items():
  try:
    signal.signal(num, handler)
    print "Adicionando %i - %s" % (num, sinal)
  except Exception, m:
    print "Pulando %i - %s" % (num, sinal)

while continuar:
    print "Esperando 3s..."
    time.sleep(3)