I have absolutely no idea how Regex works. I'm using this bit of Regex to match arguments for the URL dispatcher: <pre class="prettyprint"><code>r'^/(?P<c>\d+)/(?P\d+)/(?P<g>\w+)' </code></pre> The issue is that the second value <code>b</code> will not match if it's a negative. How can I change the above regex so it matches negative numbers as well as positive ones for the second value?

<pre class="prettyprint"><code>r'^/(?P<c>\d+)/(?P-?\d+)/(?P<g>\w+)' </code></pre> I've added the <code>-?</code>, which means: match one or zero <code>-</code> characters.

Regex to match a negative number in Django URL dispatcher?

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regex

django

I have absolutely no idea how Regex works. I'm using this bit of Regex to match arguments for the URL dispatcher:

r'^/(?P<c>\d+)/(?P<b>\d+)/(?P<g>\w+)'

The issue is that the second value b will not match if it's a negative. How can I change the above regex so it matches negative numbers as well as positive ones for the second value?