from machine import Pin
from time import sleep

button = Pin(33, Pin.IN, Pin.PULL_UP)

leds = [
    Pin(23, Pin.OUT),
    Pin(22, Pin.OUT),
    Pin(21, Pin.OUT),
    Pin(19, Pin.OUT)
]

while True:
    if button.value() == 0:  # кнопка натиснута

        # вперед
        for i in range(len(leds)):
            leds[i].value(1)
            sleep(1)
            leds[i].value(0)

        # назад
        for i in range(len(leds)-1, -1, -1):
            leds[i].value(1)
            sleep(1)
            leds[i].value(0)

    else:
        # все выключено
        for led in leds:
            led.value(0)