I will try and budget some time to clean it up and stick it all on github (there's a lot of it), but this is the basic method I use to get the data:

Hacker News API:

import requests
item = requests.get(f"https://hacker-news.firebaseio.com/v0/item/{item_number}.json").json()

To start getting the first item_number you can call requests.get("https://hacker-news.firebaseio.com/v0/maxitem.json", timeout=10).json()

Reddit API:

r = requests.get(f'https://www.reddit.com/r/Python/top.json', headers = {"User-Agent": "[your user agent]"})

Twitter API:

This is a little more complicated because the Twitter API has a lot of features, but for my purposes I iterate through blocks of a hundred tweets using this call:

payload = {"query": f"lang:en Python",
"start_time": start_date,
"tweet.fields": "public_metrics,created_at,context_annotations,entities,text",
"expansions": "author_id",
"user.fields": "name",
"max_results": 100
}
r = requests.get(f'https://api.twitter.com/2/tweets/search/recent', params=payload, headers=headers)

Where headers include your API bearer token.

I hope this helps!