Excluding common element from list python
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/6486450/python-compute-list-difference">Python, compute list difference</a>  </p>
</blockquote>



<p>I have two lists
 For example:</p>

<pre><code>A = [1,3,5,7]
B = [1,2,3,4,5,6,7,8]
</code></pre>

<p>Now, A is always a subset of B
I want to generate a third list C:
which has elements which are present in B but absent in A
like </p>

<pre><code>C = [2,4..]
</code></pre>

<p>Thanks</p>
