from machine import Pin
from time import sleep

BUTTON = Pin(1, Pin.IN)
led = Pin(11, Pin.OUT)

while True:
    print(BUTTON.value())

    if BUTTON.value() == 1:
        led.on()
        sleep(1)
    else:
        led.off()
        sleep(1)
BOOTSELLED1239USBRaspberryPiPico©2020RP2-8020/21P64M15.00TTT