python feedparser 使用

号称Universal feed parser, handles RSS 0.9x, RSS 1.0, RSS 2.0, CDF, Atom 0.3, and Atom 1.0 feeds。官网：

https://pypi.python.org/pypi/feedparser/ 

基本用法

>>> import feedparser
>>> d = feedparser.parse("http://feedparser.org/docs/examples/atom10.xml")
>>> d['feed']['title']             # feed data is a dictionary
u'Sample Feed'
>>> d.feed.title                   # get values attr-style or dict-style
u'Sample Feed'
>>> d.channel.title                # use RSS or Atom terminology anywhere
u'Sample Feed'
>>> d.feed.link                    # resolves relative links
u'http://example.org/'
>>> d.feed.subtitle                 # parses escaped HTML
u'For documentation <em>only</em>'
>>> d.channel.description          # RSS terminology works here too
u'For documentation <em>only</em>'
>>> len(d['entries'])              # entries are a list
1
>>> d['entries'][0]['title']       # each entry is a dictionary
u'First entry title'
>>> d.entries[0].title             # attr-style works here too
u'First entry title'
>>> d['items'][0].title            # RSS terminology works here too
u'First entry title'
>>> e = d.entries[0]
>>> e.link                         # easy access to alternate link
u'http://example.org/entry/3'
>>> e.links[1].rel                 # full access to all Atom links
u'related'
>>> e.links[0].href                # resolves relative links here too
u'http://example.org/entry/3'
>>> e.author_detail.name           # author data is a dictionary
u'Mark Pilgrim'
>>> e.updated_parsed              # parses all date formats
(2005, 11, 9, 11, 56, 34, 2, 313, 0)
>>> e.content[0].value             # sanitizes dangerous HTML
u'<div>Watch out for <em>nasty tricks</em></div>'
>>> d.version                      # reports feed type and version
u'atom10'
>>> d.encoding                     # auto-detects character encoding
u'utf-8'
>>> d.headers.get('Content-type')  # full access to all HTTP headers
u'application/xml'

标准的item：

<item>
<title><![CDATA[厦门公交车放火案死者名单公布<br/>警方公布嫌犯犯罪证据]]></title>
<link>http://www.infzm.com/content/91404</link>
<description><![CDATA[6月11日下午，厦门BRT公交车放火案47名死亡者名单公布。厦门政府新闻办6月10日发布消息称，有证据表明，陈水总携带汽油上了闽DY7396公交车。且有多名幸存者指认其在车上纵火，致使整部车引起猛烈燃烧。经笔迹鉴定，陈水总6月7日致妻、女的两封绝笔书系陈水总本人所写。]]></description>
<category>南方周末-热点新闻</category>
<author>infzm</author>
<pubDate>2013-06-11 11:24:32</pubDate>
</item>

feedparser.parse()得到什么，

d=feedparser.parse(' ')
>>> print d
{'feed': {}, 'encoding': u'utf-8', 'bozo': 1, 'version': u'', 'namespaces': {}, 'entries': [], 'bozo_exception': SAXParseException('no element found',)}

可以看到，得到的是字典，feed也是字典，entries是list。