import machine

LED = machine.Pin(19,machine.Pin.OUT)
KNOP = machine.Pin(18,machine.Pin.IN,machine.Pin.PULL_UP)

while True:
    if KNOP.value()== 0:
        LED.value(1)
        print("led aan",KNOP.value())
    else:
        LED.value(0)
        print("LED uit")