import RPi.GPIO as GPIO
import time

GPIO.cleanup()

GPIO.setmode(GPIO.BCM)

GPIO.setup(25, GPIO.IN)

buttonAlreadyPushed = GPIO.input(25)

while True:
	time.sleep(.01)
	buttonIsPushed = GPIO.input(25)
	if buttonIsPushed:
		if not buttonAlreadyPushed:
			print("button is pushed")
			buttonAlreadyPushed = True
			startTime = time.time()
	else:
		if buttonAlreadyPushed:
			elapsedTime = time.time() - startTime
			print(elapsedTime)
			buttonAlreadyPushed = False
		


GPIO.cleanup()