title: sort Persian strings for python
body: <p>I want to use sort function of python but it does not work well.</p>
  
  <pre><code>sorted( ['ا', 'ب', 'پ', 'ح', 'س', 'ص', 'ف', 'ک', 'ک', 'ک', 'م', 'م']) = 
   ['ا', 'ب', 'ح', 'س', 'ص', 'ف', 'م', 'م', 'پ', 'ک', 'ک', 'ک']
  </code></pre>