what python libraries should every python programmer know?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/1764878/favorite-3rd-party-python-libraries">Favorite 3rd-party Python Libraries?</a>  </p>
</blockquote>



<p>there is a question <a href="http://stackoverflow.com/questions/1764878/favorite-3rd-party-python-libraries">Favorite 3rd-party Python Libraries?</a></p>

<p>i don't want know about favorite libraries, i want know a list of essential libraries.</p>

<p>what libraries that every python programmer should know?</p>
