Component.light

The Light attached to this GameObject (null if there is none attached).

JavaScript

light.range = 10;

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void Example() {
        light.range = 10;
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def Example():
        light.range = 10