Alex Martelli wrote:
> Christoph Conrad <[EMAIL PROTECTED]> wrote:
>
>
>>Hello Roger,
>>
>>
>>>since the length of the first sequence of the letter 'a' is 2. Yours
>>>accepts it, right?
>>
>>Yes, i misunderstood your requirements. So it must be modified
>>essentially to that what Tim Chase wrote:
>>
>> m = re.search('^[^a]*a{3}b', 'xyz123aabbaaab')
>
>
> ...but that rejects 'aazaaab' which should apparently be accepted.
... and that is OK. That was the request:
>I'm looking for a regular expression that matches the first, and only
> the first, sequence of the letter 'a', and only if the length of the
> sequence is exactly 3.
--Armin
>
>
> Alex
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