Download an image from url

download_image_web.py

import urllib.request 
import shutil

def downloader(image_url, basename, index=None):
    req = urllib.request.Request(image_url, headers={'User-Agent': 'Mozilla/5.0'})
    if index:
        full_file_name = basename + '-' + str(index) + '.jpg'
    else:
        full_file_name = basename + '.jpg'
    with urllib.request.urlopen(req) as response, open(full_file_name, 'wb') as out_file: 
        shutil.copyfileobj(response, out_file)