new_contents: #/usr/bin/env python
  # -*- coding:utf-8 -*-
  # Import libraries.
  import sys
  import feedparser
  #List of uples (label, property-tag, truncation)
  COMMON_CHANNEL_PROPERTIES = [
      ('Channel title:', 'title', None),
      ('Channel description:', 'description', 100),
      ('Channel URL:', 'link', None),
  ]
  COMMON_ITEM_PROPERTIES = [
      ('Item title:', 'title', None),
      ('Item description:', 'description', 100),
      ('Item URL:', 'link', None),
  ]
  INDENT = u' '*4
  def feedinfo(url, output=sys.stdout):
      """
      Read an RSS or Atom feed from the given URL and output a feed
      report with all the key data
      """
      feed_data = feedparser.parse(url)
      channel, items = feed_data.feed, feed_data.entries
      #Display core feed data
      for label, prop, trunc in COMMON_CHANNEL_PROPERTIES:
          value = channel[prop]
          if trunc:
              value = value[:trunc] + u'...'
          print >> output, label, value
      print >> output
      print >> output, "Feed items:"
      for item in items:
          for label, prop, trunc in COMMON_ITEM_PROPERTIES:
              value = item[prop]
              if trunc:
                  value = value[:trunc] + u'...'
              print >> output, INDENT, label, value
          print >> output, INDENT, u'---'
      return
  if __name__ == "__main__":
      url = sys.argv[1]
      feedinfo(url)
  
subject: Create rss.py