def get_all_tweets(screen_name: str) -> None:
    # authorize twitter, initialize tweepy
    auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
    auth.set_access_token(access_key, access_secret)
    api = tweepy.API(auth)

    # initialize a list to hold all the tweepy Tweets
    alltweets = []

    # make initial request for most recent tweets (200 is the maximum allowed count)
    new_tweets = api.user_timeline(screen_name=screen_name, count=200)

    # save most recent tweets
    alltweets.extend(new_tweets)

    # save the id of the oldest tweet less one
    oldest = alltweets[-1].id - 1

    # keep grabbing tweets until there are no tweets left to grab
    while len(new_tweets) > 0:
        print(f"getting tweets before {oldest}")

        # all subsequent requests use the max_id param to prevent duplicates
        new_tweets = api.user_timeline(
            screen_name=screen_name, count=200, max_id=oldest
        )

        # save most recent tweets
        alltweets.extend(new_tweets)

        # update the id of the oldest tweet less one
        oldest = alltweets[-1].id - 1

        print(f"...{len(alltweets)} tweets downloaded so far")

    # transform the tweepy tweets into a 2D array that will populate the csv
    outtweets = [[tweet.id_str, tweet.created_at, tweet.text] for tweet in alltweets]

    # write the csv
    with open(f"new_{screen_name}_tweets.csv", "w") as f:
        writer = csv.writer(f)
        writer.writerow(["id", "created_at", "text"])
        writer.writerows(outtweets)