import time
import RPi.GPIO as GPIO

MY_PIN = 2

GPIO.setmode(GPIO.BOARD)

GPIO.setup(MY_PIN, GPIO.IN)

try:
    while 1:
        if GPIO.input(MY_PIN) == GPIO.LOW:
            print "Signal is LOW"
        else:
            print "Signal is HIGH"

        time.sleep(0.1)

except KeyboardInterrupt:
    pass

GPIO.cleanup()

print "BYE!"