from machine import Pin

btn1 = Pin(25,Pin.IN)
btn2 = Pin(26,Pin.IN)
sw = Pin(17,Pin.IN)
led = Pin(2,Pin.OUT)

while True:
    b1 = btn1.value()
    b2 = btn2.value()
    s = sw.value()
    led_val = (s & b2) | ((~s) & b1)
    led.value(led_val)