How to create small dict from another dict with array of keys?
<p>I have a simple dictionary <code>{'a': 1, 'b': 2, 'c': 3, 'd': 4 }</code> and list of keys: <code>['a', 'd']</code>.</p>

<p>What is the better way to construct dict object containing only keys from the list: <code>{'a': 1, 'd': 4}</code>?</p>
