This Python code fetches and parses RSS/Atom feeds from multiple...

This Python code fetches and parses RSS/Atom feeds from multiple sources and structures the data in a consistent format for further use. Here's what the code does:

1. Libraries Used:

• feedparser: A library to parse RSS/Atom feeds.

2. fetch_feed(url):

• Purpose: Retrieves and processes the feed entries from a specific URL.
• How it works:
  • feedparser.parse(url): Fetches and parses the feed from the given url.
  • Iterates through feed.entries (the items in the feed).
  • Creates a dictionary for each entry with the following keys:
    • "published": The date/time the entry was published (defaults to an empty string if not available).
    • "title": The title of the entry (defaults to "No Title" if not available).
    • "link": The web link to the entry (defaults to an empty string if not available).
    • "summary": A summary or description of the entry (defaults to an empty string if not available).
  • Aggregates these dictionaries into the items list.
• Returns: A list of dictionaries, each representing an entry in the feed.

3. fetch_all(sources):

• Purpose: Fetches and combines feeds from multiple sources.
• How it works:
  • sources: A dictionary where keys are source names (e.g., "News Site A") and values are feed URLs.
  • Iterates over each feed source.
  • For each source:
    • Calls fetch_feed(url) to fetch the feed entries.
    • Adds a "source" key to each entry to identify the source of the item.
    • Appends all items from the current source to the all_items list.
  • If an exception occurs while fetching a feed, it prints an error message with the source's name and error details.
• Returns: A combined list of all feed entries from all sources, with each entry including its source information.

Example Usage:

sources = {
    "BBC": "http://feeds.bbci.co.uk/news/rss.xml",
    "CNN": "http://rss.cnn.com/rss/edition.rss",
}

all_feed_items = fetch_all(sources)
print(all_feed_items)

• The sources dictionary specifies feed URLs from BBC and CNN.
• The fetch_all function retrieves and processes all the feed data, handling potential errors gracefully.
• The result, all_feed_items, will store a list of structured feed entries from both sources.

Summary:

This code is a robust system to pull structured data from RSS/Atom feeds, making it easy to manage and integrate feed content from multiple sources.