Python 2.6 - Split one list evenly into two : <p>My goal is simple</p>

<p>I have a list, in e.g:</p>

<pre><code>a = ['a', 'b', 'c', 'd']
</code></pre>

<p>And I want split that randomly and evenly into two different lists, in e.g:</p>

<pre><code>b = ['c', 'a']
c = ['d', 'b']
</code></pre>

<p>Thanks in advance.</p>
