Street Light automation using LDR

#importing all required modules
from boltiot import Bolt
import json, time 

API_KEY = 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'
DEVICE_ID = 'BOLTxxxxxxx'
mybolt = Bolt(API_KEY, DEVICE_ID)

#creating function for setting LED value
def set_intensity(pin, value):
	mybolt.analogWrite(pin, value)

#creting function for calculating value of LED intensity
def converter(sensor_value):
	led_intensity= 255-(sensor_value*255/1024)
	return led_intensity


while True: 
    print ("Reading Sensor Value")
    response_ldr = mybolt.analogRead('A0') #read the LDR Sensor Value from A0 Pin
    data = json.loads(response_ldr)   #convert value in Json format 
    print("Sensor value is: " + str(data['value'])) #print the value
    #exception handling
    try:
        sensor_value = int(data['value'])
        print("Calculating required Light Intensity for LED")
        led_value_float=converter(sensor_value)  #convert ldr sensor value in required
        led_value= int(led_value_float)          #led value in float and then typecast 
        print(led_value)                         #float into int type
        set_intensity('1',led_value)             #this will make LED to glow with calculated intensity value      
    except Exception as e: 
        print ("Error occured: Below are the details")
        print (e)
    time.sleep(15)