from machine import Pin 
import time

switch =Pin(4, Pin.IN)
red_led = Pin(2, Pin.OUT)

while True:
    switch_state = switch.value()
    print("Switch State =", switch_state)

    if switch_state == 1:
        red_led.value(1)
    else:
        red_led.value(0)
    time.sleep(0.1)