Auto create next Key in python dictionary
<p>Is there an easy way to create dictionary like associative array in php? in php i can do:</p>

<pre><code>&gt; $x='a';
&gt; while($x&lt;d){
&gt;     $arr[]['Letter']=$x;
&gt;      $x++
&gt;     }
</code></pre>

<p>The interpreter adds automatically a new number into empty brackets "[]"
so i can access letter <code>b</code> from <code>$arr[1]['Letter']</code>, etc.</p>

<p>Is there a way to do same with python?</p>
