from machine import Pin
import time
led_pin1 = Pin(2,Pin.OUT)
led_pin2 = Pin(16,Pin.OUT)
pin_PB1 =  Pin(25,Pin.IN)
pin_PB2 =  Pin(27,Pin.IN)

while True:
  val_PB1=pin_PB1.value()
  val_PB2=pin_PB2.value()

  if val_PB1 == 1 and val_PB2 == 0: 
    led_pin1.on()
    led_pin2.off()
  elif val_PB1 == 0 and val_PB2 == 1:  
    led_pin1.off()
    led_pin2.on()

  else:
    led_pin1.off()
    led_pin2.off()