RSS Feed: Difference between revisions
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Some examples of public feeds | Some examples of public feeds | ||
* [http://www.flickr.com/services/feeds/ Flickr | * [http://www.flickr.com/services/feeds/ Flickr] | ||
* [http://www.bbc.co.uk/news/10628494 BBC News] | |||
== Examples == | == Examples == | ||
Revision as of 17:22, 7 October 2012
RSS stands for either RDF Site Summary or else for Really Simple Syndication; RSS is a format for publishing lists on the web, such as the last posts to a blog, or the latest audio files of a podcast. RSS is designed to make it easy for software, like a "pod catcher" or a feed reader to automatically collect and download information from websites that a user has "subscribed" to. Feeds can be useful to write scripts that use public websites as services to request, for instance, the latest images added to Flickr with a given tag, or to search a set of news sites for their last headlines.
Some examples of public feeds
Examples
Die Zeit
A little script to see the current categories of the RSS Feed of german Newspaper "Die Zeit"
http://pzwart3.wdka.hro.nl/~mwocher/cgi-bin/Rss_Zeit6.cgi
<source lang="python">
- !/usr/bin/env python
- -*- coding:utf-8 -*-
- import cgi
import lxml.etree, urllib2, codecs
print """
<html> <head><title>Sample CGI Script</title></head> <body>
"""
- category_1=Politik
- category_2=Wirtschaft
- category_3=Gesellschaft
- category_4=Kultur
- category_5=Meinung
- category_6=Wissen
- category_7=Digital
- category_8=Studium
- category_9=Karriere
- category_10=Lebensart
- category_11=Reisen
- category_12=Auto
- category_13=Sport
- Counters
category_1=0 category_2=0 category_3=0 category_4=0 category_5=0 category_6=0 category_7=0 category_8=0 category_9=0 category_10=0 category_11=0 category_12=0 category_13=0
- Faktor
Faktor=10
- Read from live URL
f = urllib2.urlopen("http://newsfeed.zeit.de/index")
- Read from local file
import sys
- Read in the XML file
doc = lxml.etree.parse(f)
print """
"""
- Again brief review of file system paths (absolute vs. relative)
- XPATH = super paths for documents, not filesystems!
NS = {
'media': 'http://search.yahoo.com/mrss/', 'dc': 'http://purl.org/dc/elements/1.1/', 'cc': 'http://creativecommons.org/ns#', 'atom': 'http://www.w3.org/2005/Atom',
}
- Doing something which each item individually (maybe extracting the names
for item in doc.xpath("//item"): category = item.xpath(".//category/text()")[0]
if category == "Politik": category_1=category_1+1
if category == "Wirtschaft": category_2=category_2+1
if category == "Gesellschaft": category_3=category_3+1
if category == "Kultur": category_4=category_4+1
if category == "Meinung": category_5=category_5+1
if category == "Wissen": category_6=category_6+1
if category == "Digital": category_7=category_7+1
if category == "Studium": category_8=category_8+1
if category == "Karriere": category_9=category_9+1
if category == "Lebensart": category_10=category_10+1
if category == "Reisen": category_11=category_11+1
if category == "Auto": category_12=category_12+1
if category == "Sport": category_13=category_13+1
print """
""" print """
""" print """
""" print """
""" print """
""" print """
""" print """
""" print """
""" print """
""" print """
""" print """
""" print """
""" print """
"""
print """</body></html>"""
- urls = doc.xpath("//enclosure/@url")