Python regular expression with raw string prefix
<p>I'm new with python and regular expressions.</p>

<p>I have this regular expressions and i don't know what is the purpose of this</p>

<pre><code>r'(\d+)\.(\d*)'
</code></pre>

<p>all I know is it matches a digit from 0 to 9.</p>

<p>can anyone help me explain it?</p>

<p>thanks..</p>
