how to add an empty list to a tuple
<p>I need to add an empty list to an existing tuple.<br>
example:  </p>

<pre><code>&gt;&gt;&gt; ([1],[1,2]) + ([])  
([1],[1,2],[])
</code></pre>

<p>My problem is that python seems to evaluate <code>([])</code> to <code>[]</code> on which i can't use the <code>+</code> operator.  </p>

<p>I tried <code>tuple([])</code> but that evaluates to <code>()</code> and nothing is added to the original tuple.</p>

<p>Thank you.</p>
