title: What does 'x, y =' mean in python syntax?
body: <p>I'm new to python and trying to work my way through <a href="http://yuji.wordpress.com/2011/06/22/python-imaplib-imap-example-with-gmail/" rel="nofollow">http://yuji.wordpress.com/2011/06/22/python-imaplib-imap-example-with-gmail/</a> which has the following line:</p>
  
  <pre><code>result, data = mail.uid('search', None, "ALL") # search and return uids instead
  </code></pre>
  
  <p>Could someone explain this line?</p>
  
  <p>Thank you.</p>