How can i check what is the biggest string in a list : <p>I want to check what is the biggest string in a list</p>

<p>Is there any function for this?
for example:</p>

<pre class="lang-py prettyprint-override"><code>lis = ['rafa', 'now', 'lucky']
</code></pre>

<p>And it returns 'lucky' or 5</p>
