#!/usr/bin/env/ python

import RPi.GPIO as GPIO
GPIO.setmode (GPIO.BOARD)
GPIO.setup (7, GPIO.OUT)

print ("Welcome")

while True:
  status = raw_input ("Please enter a value: ")
  print ("You entered: ",status)

  if status == "exit":
    break;
  else if status == "on":
    print ("On")
    GPIO.output(7, True)
  else if status == "off":
    print ("Off")
    GPIO.output(7, False)
  else:
    print ("Invalid value, please enter 'on' or 'off', or 'exit' to exit the program")
    break