from machine import Pin
import time
led1 = Pin(2, Pin.OUT)
led2 = Pin(4, Pin.OUT)
button1 = Pin(23, Pin.IN)
button2 = Pin(22, Pin.IN)
while True:
    sw1 = button1.value()
    sw2 = button2.value()
    if sw1 == 1:
        print('LED1 ON')
        led1.on()
        time.sleep_ms(500)
    elif sw2 == 1:
        print('LED2 ON')
        led2.on()
        time.sleep_ms(500)
    else:
        print('LED1 OFF')
        led1.off()
        print('LED2 OFF')
        led2.off()