social_user = request.user.social_auth.filter(provider='facebook').first()
if social_user:
    url = (
        'https://graph.facebook.com/{0}/friends?fields=id,name,location,picture&access_token={1}'
        .format(social_user.uid, social_user.extra_data['access_token']))
request = urllib.request.Request(url)
friends = json.loads(urllib.request.urlopen(request).read()).get('data')
How to retrieve Facebook friend's information with Python-Social-auth and Django