from machine import Pin,Timer
ldr = Pin(15,Pin.OUT)
led = Pin(13,Pin.OUT)





def fun(tim)_get:
 if LDR.value == 1:    
       LED.value(1)
 else:
        LED.value(0)  

tim = Timer(0)  
tim.init(period = 1000,mode = Timer.PERIODIC,callback = fun)