from machine import Pin 
import time
button = Pin(1, Pin.IN, Pin.PULL_UP)#Internal pull-up
led = Pin(0, Pin.OUT)
while True:

    time.sleep(0.1)
    if button.value() == 0:        #key press
        print("button value",button.value())
        led.value(1)
    else:
        print("button value",button.value())
        led.value(0)