import utime 
utime.sleep(0.3)

from machine import Pin
led=Pin(16,Pin.OUT)
button=Pin(15,Pin.IN,Pin.PULL_UP)
while 1:
    stat=button.value() #read button value
    if stat==0:
        led.value(1)
    else:
        led.value(0)
    utime.sleep(0.3)