python生成RSS（PyRSS2Gen）

既然能够用python解析rss，那么也顺带研究下生成rss。

其实很简单，只是生成一个比较特殊点的xml文档而已。

这里我使用了PyRss2Gen,用法很简单，看代码就知道了，如下：

import datetime  
import PyRSS2Gen  
  
rss = PyRSS2Gen.RSS2(  
   title = "Andrew's PyRSS2Gen feed",  
   link = "http://www.dalkescientific.com/Python/PyRSS2Gen.html",  
   description = "The latest news about PyRSS2Gen, a "  
                 "Python library for generating RSS2 feeds",  
  
   lastBuildDate = datetime.datetime.now(),  
  
   items = [  
      PyRSS2Gen.RSSItem(  
        title = "PyRSS2Gen-0.0 released",  
        link = "http://www.dalkescientific.com/news/030906-PyRSS2Gen.html",  
        description = "Dalke Scientific today announced PyRSS2Gen-0.0, "  
                      "a library for generating RSS feeds for Python.  ",  
        guid = PyRSS2Gen.Guid("http://www.dalkescientific.com/news/"  
                         "030906-PyRSS2Gen.html"),  
        pubDate = datetime.datetime(2003, 9, 6, 21, 31)),  
      PyRSS2Gen.RSSItem(  
        title = "Thoughts on RSS feeds for bioinformatics",  
        link = "http://www.dalkescientific.com/writings/diary/"  
               "archive/2003/09/06/RSS.html",  
        description = "One of the reasons I wrote PyRSS2Gen was to "  
                      "experiment with RSS for data collection in "  
                      "bioinformatics.  Last year I came across...",  
        guid = PyRSS2Gen.Guid("http://www.dalkescientific.com/writings/"  
                              "diary/archive/2003/09/06/RSS.html"),  
        pubDate = datetime.datetime(2003, 9, 6, 21, 49)),  
   ])  
  
rss.write_xml(open("pyrss2gen.xml", "w"))

这个生成的rss文档是这样的：

<?xml version="1.0" encoding="iso-8859-1"?>
<rss version="2.0">
<channel>
<title>Andrew's PyRSS2Gen feed</title>
<link>http://www.dalkescientific.com/Python/PyRSS2Gen.html</link>
<description>The latest news about PyRSS2Gen, a Python library for generating RSS2 feeds</description>
<lastBuildDate>Thu, 15 May 2014 20:24:12 GMT</lastBuildDate>
<generator>PyRSS2Gen-1.1.0</generator>
<docs>http://blogs.law.harvard.edu/tech/rss</docs>
<item>
    <title>PyRSS2Gen-0.0 released</title>
    <link>http://www.dalkescientific.com/news/030906-PyRSS2Gen.html</link>
    <description>Dalke Scientific today announced PyRSS2Gen-0.0, a library for generating RSS feeds for Python.  </description>
    <guid isPermaLink="true">http://www.dalkescientific.com/news/030906-PyRSS2Gen.html</guid>
    <pubDate>Sat, 06 Sep 2003 21:31:00 GMT</pubDate>
</item>
<item>
    <title>Thoughts on RSS feeds for bioinformatics</title>
    <link>http://www.dalkescientific.com/writings/diary/archive/2003/09/06/RSS.html</link>
    <description>One of the reasons I wrote PyRSS2Gen was to experiment with RSS for data collection in bioinformatics.  Last year I came across...</description>
    <guid isPermaLink="true">http://www.dalkescientific.com/writings/diary/archive/2003/09/06/RSS.html</guid>
    <pubDate>Sat, 06 Sep 2003 21:49:00 GMT</pubDate>
</item>
</channel>
</rss>