Martin v. Löwis wrote:
>> match groups are numbered 1..N, not 0..(N-1), in both the API and in the
>> RE syntax (and we don't have much control over the latter).
>
> py> m = re.match("a(b)","ab")
> py> m.group(0)
> 'ab'
> py> m.group(1)
> 'b'
0 isn't a group, it's an alias for the full match.
</F>