title: python feedparser return only limited number of entries
body: <p>I'm new to feedparser and would like to retrive the full number or entries/articles from a feed.</p>
  
  <pre><code>myfeed = feedparser.parse(feedurl)
  print len(myfeed['entries'])
  </code></pre>
  
  <p>For instance if I use </p>
  
  <pre><code>feedurl = 'http://www.korben.info/feed'
  </code></pre>
  
  <p>It only returns only 30 entries.
  It's the same with other sites.</p>
  
  <p>Why is this so limited ?</p>
  
  <p>I need to retrieve the <strong>full</strong> list of articles URLs from a site.</p>
  
  <p>How can I achieve this please ?
  Thank you for your help.</p>