#!/usr/bin/python

import threading, signal, time

true = 0

def trueAction():
	global true
	if true: 
		true =0
		print "true off"
	else: 
		true=1
		print "true on"

class MainThread( threading.Thread ):
	def run( self ):
		loop()
			
def signalHandler(signal, frame):
	global true
	while true:
		print "waiting on true"
		time.sleep(1)
	print "true now off. do clean up now"
	raise SystemExit, u"exiting due to exit signal %s" % signal

def loop():
	while 1:
		time.sleep(3)
		trueAction()

def main():
##	MainThread().start()
	loop()
	
	
if __name__ == '__main__':
	signal.signal(signal.SIGINT, signalHandler)
	main()