extract item from list of dictionaries
<p>Suppose you have a list of dictionaries like this one:</p>

<pre><code>a = [ {'name':'pippo', 'age':'5'} , {'name':'pluto', 'age':'7'} ]
</code></pre>

<p>What do you to extract from this list only the dict where name==pluto?
To make things a little bit harder, consider that I cannot do any import</p>
