import machine
from machine import Pin

LedRojo = Pin(14,Pin.OUT)
LedAmarillo = Pin(26,Pin.OUT)
LedAzul = Pin(33,Pin.OUT)
LedVerde = Pin(32,Pin.OUT)

Entrada1 = Pin(22,Pin.IN,Pin.PULL_UP)
Entrada2 = Pin(21,Pin.IN,Pin.PULL_UP)

while True:
    A = Entrada1.value()
    B = Entrada2.value()

    rojo = ((not A) and (not B))
    amarillo = B and (not A) 
    azul = A and (not B) 
    verde = A and B

    LedAmarillo.value(amarillo)
    LedAzul.value(azul)
    LedRojo.value(rojo)
    LedVerde.value(verde)