from utime import sleep
sleep(0.1)

from machine import Pin

upper_triangle = [0, 1, 2, 3, 4]
lower_triangle = [5, 6, 7, 8]

led_pins = [Pin(i, Pin.OUT) for i in range(2, 11)]

button1 = Pin(12, Pin.IN, Pin.PULL_DOWN)
button2 = Pin(13, Pin.IN, Pin.PULL_DOWN)
button3 = Pin(14, Pin.IN, Pin.PULL_DOWN)

def toggle_leds(led_group):
    for led in led_group:
        led_pins[led].toggle()

def alternate_blink():
    while button3.value():
        toggle_leds(upper_triangle)
        sleep(0.5)
        toggle_leds(upper_triangle)
        toggle_leds(lower_triangle)
        sleep(0.5)
        toggle_leds(lower_triangle)

while True:
    if button1.value():
        toggle_leds(upper_triangle)
        sleep(0.3)
        
    if button2.value():
        toggle_leds(lower_triangle)
        sleep(0.3)
        
    if button3.value():
        alternate_blink()