A slight modification for Jareth - automatically gets the RSS feed. See inline comments... ;-)

Boingboing.py

import feedparser
import httplib2 # This library allows you to make HTTP requests

# Defines the URL of the RSS feed for BoingBoing.net
RSS_FEED = "http://feeds.boingboing.net/boingboing/iBag"

# Create a new Http object and use it to make a request to get the feed
http = httplib2.Http()
# headers contains the result headers, boingboing_rss contains the feed itself
headers, boingboing_rss = http.request(RSS_FEED)

# Your original code follows:
print boingboing_rss
feed = feedparser.parse(boingboing_rss)
print feed

print feed["items"]
print feed["channel"]["description"