Knight Rider LEDs on a Raspberry Pi

knightrider.py

# The code accompanying https://www.youtube.com/watch?v=PsVcLdAyAcU

import atexit
import time
from gpiozero import LEDBoard

leds = LEDBoard(2, 3, 4, 17, 27, 22, 10, 9)
i = 0

atexit.register(leds.close)
while 1:
    leds.on(i ^ (i >> 3 and 0xf or 0))
    i = (i + 1) & 0xf
    time.sleep(0.1)
    leds.off()