"Fredrik Lundh" <[EMAIL PROTECTED]> writes:
>Eddie Corns wrote:
>> >I want an re that matches strings like "21MAR06 31APR06 1236",
>> >where the last part is day numbers (1-7), i.e it can contain
>> >the numbers 1-7, in order, only one of each, and at least one
>> >digit. I want it as three groups. I was thinking of
>>
>> Just a small point - what does "in order" mean here? if it means that eg 1362
>> is not valid then you're stuck because it's context sensitive and hence not
>> regular.
>>
>> I can't see how any of the fancy extensions could help here but maybe I'm
>> just lacking insight.
>import re
>p = re.compile("(?=[1234567])(1?2?3?4?5?6?7?)$")
>def test(s):
> m = p.match(s)
> print repr(s), "=>", m and m.groups() or "none"
>test("")
>test("1236")
>test("1362")
>test("12345678")
>prints
>'' => none
>'1236' => ('1236',)
>'1362' => none
>'12345678' => none
></F>
I know I know! I cancelled the article about a minute after posting it.
Eddie
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