from machine import Pin
from time import sleep

ledverde = Pin(21, Pin.OUT)
ledamarrillo = Pin(20, Pin.OUT)
ledrojo = Pin(19, Pin.OUT)
boton_1 = Pin(28, Pin.IN, Pin.PULL_UP)
boton_2 = Pin(27, Pin.IN, Pin.PULL_UP)
memoria = 0

while True: 
    if boton_1.value() == 0 and memoria == 0:
        memoria = not memoria
        if memoria == 1:
            ledamarrillo.value(1)
            ledverde.value(1)
            ledrojo.value(1)
            print("encendido")
    elif boton_2.value() == 0 and memoria == 1:
        memoria = not memoria
        if memoria == 0:
            ledamarrillo.value(0)
            ledverde.value(0)
            ledrojo.value(0)
            print("apagado")

        sleep (0.5)