Reaction game with highscore

reaction_game.py

# Reaction game

from gpiozero import Button, LED
from time import time, sleep
from random import randint

from gpiozero.pins.pigpio import PiGPIOFactory
factory = PiGPIOFactory(host='raspberrypi')

led = LED(17, pin_factory=factory)
btn = Button(4, pin_factory=factory)

highscore = 10

while True:
    sleep(randint(1,10))
    led.on()
    start = time()
    btn.wait_for_press()
    led.off()
    end = time()
    score = end - start
    if score < highscore:
        print(score, "- new highscore!")
        highscore = score
    else:
        print(score, "- highscore:", highscore)