from machine import Pin
import time

led_pins = [23, 22, 19, 18, 0, 4, 16, 17]
switch_pin = 14  

leds = [Pin(pin, Pin.OUT) for pin in led_pins]

switch = Pin(switch_pin, Pin.IN, Pin.PULL_UP)

prev_switch_state = 1  

def move_right():
    for i in range(len(leds)):
        leds[i].on()
        time.sleep(0.2)
        leds[i].off()

def move_left():
    for i in range(len(leds) - 1, -1, -1):
        leds[i].on()
        time.sleep(0.2)
        leds[i].off()

while True:
    switch_state = switch.value()
    if switch_state == 0 and prev_switch_state == 1:
        move_right()
    elif switch_state == 1 and prev_switch_state == 0:
        move_left()
    prev_switch_state = switch_state