#!/usr/bin/env python
import RPi.GPIO as GPIO
import time

LedPin = 19    # PIN our parallel LED's are connected to
LedBlue = 17    # PIN our Third LED is connected to

def setup():
  GPIO.setmode(GPIO.BCM)       # Numbers GPIOs by Hardware PIN #

  GPIO.setup(LedPin, GPIO.OUT)   # Set LedPin's mode is output
  GPIO.output(LedPin, False) # Set LedPin high(+3.3V) to off led

  GPIO.setup(LedBlue, GPIO.OUT) #set up Blue LED as output
  GPIO.output(LedBlue, False) # set Blue LED to be off at start

def loop():
	while True:
	  GPIO.output(LedPin, False)  # Parallel LED's off
	  time.sleep(0.5) # wait .5 seconds
		GPIO.output(LedBlue, True) # Blue LED On
		time.sleep(0.5)
		GPIO.output(LedBlue, False) # Blue LED off
		time.sleep(0.5)
	  GPIO.output(LedPin, True) # Parallel LED's on
	  time.sleep(0.5)

def destroy():
	GPIO.output(LedPin, False)
  GPIO.output(LedBlue, False)
	GPIO.cleanup()                     # Release resource

if __name__ == '__main__':     # Program start from here
	setup()
  try:
	  loop
	except KeyboardInterrupt:
		destroy()