mrtg - mini reaction time game

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

red_led = LED(17)
button = Button(4)
reset_button = Button(3)

highscore = 100 #inital highscore as time to beat
reset_button_state = 0

def highscore_reset():
    global reset_button_state
    global highscore

    highscore = 100


while True:
    sleep(randint(1,10))
    red_led.on()
    start = time()
    button.wait_for_press()
    red_led.off()
    end = time()

    react = end - start
    print('highscore is: ' + str(highscore))
    print('your time is : ' + str(react))

    if react < highscore:
        print('congrats new highscore! well done!')
        highscore = react
    else:
        print('try again!')

    reset_button.when_pressed = highscore_reset