twitter_friends_to_list.py

import twitter

def chunks(l, n):
    """Yield successive n-sized chunks from l."""
    for i in xrange(0, len(l), n):
        yield l[i:i+n]

def put_friends_on_list(oauth_creds, username, list_name):
    t = Twitter(auth=OAuth(*oauth_creds)
    res = t.friends.ids()
    for chunk in chunks(res['ids'], 100):
        t.lists.members.create_all(owner_screen_name=username, slug=list_name, user_id=','.join([str(x) for x in chunk]))

if __name__ == '__main__':
    oauth_creds = ("","","","")
    username = ""
    list_name = ""
    put_friends_on_list(oauth_creds, username, list_name)