from machine import Pin
import time
led1= Pin(2, Pin.OUT)
led2= Pin(4, Pin.OUT)
led3= Pin(5, Pin.OUT)
led4= Pin(13, Pin.OUT)
button= Pin(34, Pin.IN)
while True:
    state=button.value()
    if state==1:
        led1.value(1)
        led2.value(1)
        led3.value(1)
    else:
        led1.value(0)
        led2.value(0)
        led3.value(0)
time.sleep(1)