python: is there a difference between list.extend() and +?
<p>In python, for lists <code>a</code> and <code>b</code>, is there any difference between <code>a.extend(b)</code> and <code>a + b</code>?</p>

<p><strong>EDIT</strong>: Due to my lack of reading over my post, I missed the fact that I wrote <code>a + b</code> instead of <code>a += b</code>. Sigh.</p>
