from machine import Pin
from time import sleep

time.sleep(0.1) 

print("Push button demo")
led = Pin(20, Pin.OUT)
button = Pin(14, Pin.IN)

while True:
    if button.value()==1:
	    led.on()
        time.sleep(0.5)
    else:
        led.off()
        time.sleep(0.5)