title: Python Urllib2 module Error
body: <p>Can somebody tell me what:</p>
  
  <pre><code>URLError: &lt;urlopen error [Errno -3] Temporary failure in name resolution&gt;
  </code></pre>
  
  <p>exactly means? Could not find it in the documentation.</p>
  
  <p>Does it say that the URL is incorrect?!</p>