Validating image links in Python with urllib

check_imagelinks.py

import urllib.request
import urllib.error

# This function checks the headers returned from a urllib.request object

def check_imagelinks(imglist):
    for img in imglist:
        try:
            with urllib.request.urlopen(img) as response:
                # headers are returned as tuples so cast that as a list
                headers = list(response.getheaders())
                if ('Content-Type', 'image/jpeg') not in headers:
                    print('*** Bad/broken image link found, removing url:\n' + 'img')
                    imglist.pop(imglist.index(img))
        except urllib.error.HTTPError:
            # if server returns an 403 forbidden this will catch it
            print('*** Bad/broken image link found, removing url:\n' + 'img')
            imglist.pop(imglist.index(img))
    return imglist