Python list not appending : <p>I've been following a tutorial exactly but my list isn't appending--I get the error, "AttributeError: 'list' object attribute 'append' is read-only."</p>

<p>My code is:</p>

<pre><code>mylist = [1,2,3]
mylist.append = (4)
</code></pre>

<p>Thank you in advance.</p>
