In this example RSS feed, the optional item element pubDate is included in all entries. But it is not available as a item element in the Python module feedparser. This code:
import feedparser
rss_object = feedparser.parse("http://cyber.law.harvard.edu/rss/examples/rss2sample.xml")
for entry in rss_object.entries:
print entry.pubDate
Causes the error AttributeError: object has no attribute 'pubDate'
but I can successfully do print entry.description
and see the contents of all the description tags.