How to sort list within a list?
<p>I want to sort my list based on the first item such as:</p>

<pre><code>fruits = \
[['Mango', 6, 5, 8.0],
 ['Banana', 2.0, 5, 8.9, 7],
 ['Pineapple', 4, 6.8, 9],
 ['Apple', 3.9, 6, 7, 2]]
</code></pre>

<p>to be sorted out like this:</p>

<pre><code>fruits = \
[['Apple', 3.9, 6, 7, 2],
 ['Banana', 2.0, 5, 8.9, 7],
 ['Mango', 6, 5, 8.0],
 ['Pineapple', 4, 6.8, 9]]
</code></pre>

<p>I know I have to use <code>sort()</code> function but I don't know how to use it in a right way to produce the outputs that I want. </p>
