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Date: Sun, 6 Jul 2014 10:41:14 -0700
From: Albert-Jan Roskam <fomcl@yahoo.com>
Subject: Re: Question about metacharacter '*'
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Xref: csiph.com comp.lang.python:74059




>In article <d8f8d76d-0a47-4f59-8f09-da2a44cc1d2e@googlegroups.com>,
> Rick Johnson <rantingrickjohnson@gmail.com> wrote:
>
>> As an aside i prefer to only utilize a "character set" when
>> nothing else will suffice. And in this case r"[0-9][0-9]*"
>> can be expressed just as correctly  (and less noisy IMHO) as
>> r"\d\d*".
>
>Even better, r"\d+"

I tend tot do that too, even though technically the two are not perfectly equivalent. With the re.LOCALE flag LC_ctype is also affected, which affects what is captured by \d but not by [0-9]