import board
import digitalio
import time

led1 = digitalio.DigitalInOut(board.GP0)
led2 = digitalio.DigitalInOut(board.GP1)
led3 = digitalio.DigitalInOut(board.GP2)
led1.direction = digitalio.Direction.OUTPUT
led2.direction = digitalio.Direction.OUTPUT
led3.direction = digitalio.Direction.OUTPUT

while True:
    led1.value = True
    led2.value = True
    led3.value = True