[Tutor] regex newbie question

[Steve Willoughby]

On Thu, May 8, 2008 16:32, Steve Willoughby wrote:
> On Thu, May 8, 2008 14:40, Dick Moores wrote:
>> At 01:30 PM 5/8/2008, Steve Willoughby wrote:
>>>On Thu, May 8, 2008 12:40, Dick Moores wrote:
>>> > But here's a chance to ask: What regex would match 2-digit strings
>>> > and 4-digit strings only?
>>>
>>>^\d\d(\d\d)?$
>>
>> Ah. And so ^\d\d(\d\d)?(\d\d)?$ matches all and only 2-, 4-, and
>> 6-digit strings.  Which makes me wonder if there's a regex for ALL
>> and only strings of digits only, with an even number of digits.
>
> That would be r'^\d\d(\d\d)*$'

Or...  r'^(\d\d)+$'