understanding the regular expression in python
<p>I am learning re in python.<br>
I understand all other things in the following example.<br>
but, i really dont understand what special (in tags) means in the following example.</p>

<pre><code>re.compile('((?P&lt;special&gt;[0:-])\s)')
</code></pre>

<p>kindly help if know it.</p>
