how i resized the images

import urllib
import os
import tweepy
import csv
import time
import PIL
from PIL import Image, ImageOps



def tweet_image(url, message):
    api = twitter_api()
    urllib.urlretrieve(url, "image.jpg")
    filename = 'image.jpg'
    image = Image.open(filename)
    size = (440,220)
    image.thumbnail(size, Image.ANTIALIAS)
    background = Image.new('RGBA', size, (255, 255, 255, 0))
    background.paste(image,((size[0] - image.size[0]) / 2, (size[1] - image.size[1]) / 2))
    background.save('resized_image.jpg')
    filename1 = 'resized_image.jpg'
    api.update_with_media(filename1, status=message)
    os.remove(filename1)
    os.remove(filename)