Save all tweets from someone using https://www.allmytweets.net/ (actually it's limited to 1800 I think)

save_tweets.py

import requests

username = 'alexberenson'

def write_tweets(f, tweets):
    for tweet in tweets:
        text = tweet["full_text"]
        for url in tweet["entities"]["urls"]:
            text = text.replace(url["url"], url["expanded_url"])

        if quote := tweet.get("quoted_status"):
            text += f" [QUOTE: {quote['full_text']}]"

        f.write(f"{tweet['created_at']}: {text}\n\n~> ")


with open(f"{username}.tweets", "w") as f:
    f.write("~> ")
    for i in range(40):
        print(i, len(tweets))

        if len(tweets) == 0:
            break

        tweets = []
        max_id = ''
        if tweets:
            max_id = tweets[-1]["id"]

        tweets = requests.get(
            f"https://www.allmytweets.net/get_tweets.php?count=200&tweet_mode=extended&trim_user&screen_name={username}&max_id={max_id}"
        ).json()

        if len(tweets) and tweets[0]["id"] == max_id:
            tweets.pop(0)

        write_tweets(f, tweets)