re question

[David]

On 9/19/07, Dan Bar Dov <bardov at gmail.com> wrote:
> I'm trying to construct a regular expression to match valid IP address,
> without leading zeroes (i.e
> 1.2.3.4, 254.10.0.0, but not 324.1.1.1, nor 010.10.10.1)
>
> This is what I come up with, and it does not work.
>
> r'(^[12]?\d{0,2}\.){3,3}[12]?\d{0,2}'
>
> What am I doing wrong?
> Any common knowledge IP matching RE?

http://www.regular-expressions.info/examples.html ?