title: warning in python with MySQLdb
body: <p>when I use MySQLdb get this message:  </p>
  
  <pre><code>/var/lib/python-support/python2.6/MySQLdb/__init__.py:34: DeprecationWarning: the sets module is deprecated from sets import ImmutableSet
  </code></pre>
  
  <p>I try filter the warning with    </p>
  
  <pre><code>import warnings 
  warnings.filterwarnings("ignore", message="the sets module is deprecated from sets import ImmutableSet")
  </code></pre>
  
  <p>but, I not get changes.<br>
  any suggestion?<br>
  Many thanks.</p>