Shulou(Shulou.com)06/02 Report--

In this issue, the editor will bring you about how to solve the problem of Python RSS. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

Python application as a good RSS processing tool, the following article introduces some modules that can be used for RSS processing, most Python RSS users who deal with .py only need to care about the two classes it provides.

RSS is an acronym that can be expressed in a variety of extensions: "RDF site summary (RDF Site Summary)", "really simple syndicate (Really Simple Syndication)", "rich site summary (Rich Site Summary)". Maybe it can be expressed by other extensions. Behind such a confusing name, you will find that there are surprisingly many stories related to such an ordinary field of technology.

Python RSS processing is a simple XML format for distributing summaries of content on a Web site. It can be used to share a wide variety of information, including (but not limited to) newsletters, Web site updates, event calendars, software updates, feature content collections, and Web-based auctions. RSS, created by Netscape in 1999, allows content from many sources to be aggregated into a Netcenter portal (which no longer exists).

Web enthusiasts in the UserLand community became early supporters of RSS, and RSS quickly became a very popular format. This popularity makes it difficult to improve RSS so that it can be used in more places. This restriction has led to differences in the development of RSS.

One group chose a RDF-based approach to take advantage of a large number of RDF tools and modules, while the other group chose a more compact approach. The former is called RSS 1.0, while the latter is called RSS 0.91. Just last month, the competition between the two intensified with the advent of a new version of a non-RDF variant of RSS.

This new version is called "RSS 2.0" by its creators. RSS 0.91 and 1.0 are very popular and are used by many portals and Web logs. In fact, the blogging community is the primary user of RSS, and Python RSS processing is an impressive reason for some of the existing networks for XML switching.

These networks have grown organically and have really become the most successful XML service networks available. RSS becomes a XML service because it is exchanged XML information over Internet protocols (the vast majority of RSS exchanges are simple HTTP GET of RSS documents).

We are only introducing a few of the many Python tools that can work with RSS. We do not provide a technical introduction to RSS. Because you can get this content in many other articles. (see Resources). We recommend that you first briefly familiarize yourself with RSS knowledge and be able to understand XML. You don't need to know about RDF.

RSS.py written by Mark Nottingham is a Python library for RSS processing. It is very perfect and well written. It requires Python 2.2 and PyXML 0.7.1. Its installation is very simple; all you have to do is download the Python file from Mark's home page and copy it somewhere in your PYTHONPATH.

Most Python RSS users who deal with .py themselves only need to care about the two classes it provides: CollectionChannel and TrackingChannel. The latter seems to be the more useful of the two classes. TrackingChannel is a data structure that contains all RSS data indexed by the keywords of each item.

CollectionChannel is a similar data structure, but its structure is more like the RSS document itself, and its top-level channel information points to item details using the hash value represented by URL. You will most likely use the utility namespace declaration in the RSS.ns structure. Listing 1 is a simple script that downloads and parses the RSS feed for Python news and prints all the information from each item in a simple listing.

The above is the editor for you to share how to solve the Python RSS problem, if you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.