Collect new articles from your feeds in Trello and email

import feedparser
from clickruntime import on_trigger, credentials, http, state, notify

FEEDS = ["https://blog.example.com/feed", "https://news.example.org/rss"]
CARD_ID = "your-trello-card-id"

@on_trigger
def run(event):
    seen = set(state.get("seen") or [])
    new = []
    for url in FEEDS:
        for e in feedparser.parse(http.get(url).text).entries:
            key = e.get("id") or e.get("link")
            if key and key not in seen:
                new.append((e.get("title", "Untitled"), e.get("link", "")))
                seen.add(key)
    if not new:
        return {"new": 0}
    auth = {"key": credentials.secret("TRELLO_KEY"), "token": credentials.secret("TRELLO_TOKEN")}
    for title, link in new:
        http.post(f"https://api.trello.com/1/cards/{CARD_ID}/actions/comments", params={**auth, "text": f"{title}\n{link}"})
    notify.email_me(f"{len(new)} new articles", "\n\n".join(f"{t}\n{l}" for t, l in new))
    state.set("seen", list(seen)[-2000:])
    return {"new": len(new)}