Python Network Programming 简明教程

Python - RSS Feed

RSS(富网站摘要)是一种用来传递定期更改的 Web 内容的格式。许多新闻相关站点、Web 日志和其他在线发布者以 RSS Feed 的形式联合他们的内容提供给想要这些内容的用户。在 Python 中,我们借助以下软件包来读取和处理这些 Feed。

pip install feedparser

Feed Structure

在以下示例中,我们获取了 Feed 的结构,以便进一步分析我们想要处理 Feed 的哪些部分。

import feedparser
NewsFeed = feedparser.parse("https://timesofindia.indiatimes.com/rssfeedstopstories.cms")
entry = NewsFeed.entries[1]

print entry.keys()

当我们运行以上程序时,我们得到以下输出:

['summary_detail', 'published_parsed', 'links', 'title', 'summary', 'guidislink', 'title_detail', 'link', 'published', 'id']

Feed Title and Posts

在以下示例中,我们读取了 rss Feed 的标题和头部。

import feedparser

NewsFeed = feedparser.parse("https://timesofindia.indiatimes.com/rssfeedstopstories.cms")

print 'Number of RSS posts :', len(NewsFeed.entries)

entry = NewsFeed.entries[1]
print 'Post Title :',entry.title

当我们运行以上程序时,我们得到了以下输出 −

Number of RSS posts : 5
Post Title : Cong-JD(S) in SC over choice of pro tem speaker

Feed Details

基于以上条目结构,我们可以使用 Python 程序从 Feed 中导出必要的信息,如下所示。由于条目是字典,我们利用其键来生成所需的值。

import feedparser

NewsFeed = feedparser.parse("https://timesofindia.indiatimes.com/rssfeedstopstories.cms")

entry = NewsFeed.entries[1]

print entry.published
print "******"
print entry.summary
print "------News Link--------"
print entry.link

当我们运行以上程序时,我们得到了以下输出 −

Fri, 18 May 2018 20:13:13 GMT
******
Controversy erupted on Friday over the appointment of BJP MLA K G Bopaiah as pro tem speaker for the assembly, with Congress and JD(S) claiming the move went against convention that the post should go to the most senior member of the House. The combine approached the SC to challenge the appointment. Hearing is scheduled for 10:30 am today.
------News Link--------
https://timesofindia.indiatimes.com/india/congress-jds-in-sc-over-bjp-mla-made-pro-tem-speaker-hearing-at-1030-am/articleshow/64228740.cms