Append value to each sublist in a list
<p>I have a list of list that I want to append a constant value to each sublist of the full list, for instance:</p>

<pre><code>_lst = [[1, 2], [3, 4], [5, 6]]
</code></pre>

<p>and I want to append <code>7</code> to each of the sublist so that <code>_lst</code> becomes:</p>

<pre><code>[[1, 2, 7], [3, 4, 7], [5, 6, 7]]
</code></pre>

<p>Is there a good way to complete the job (such as using <code>zip</code>)? Thanks!</p>
