\b is NOT spaces
>>> p = re.compile(r'\sword\s')
>>> m = p.match(' word ')
>>> assert m
>>> m.group(0)
' word '
>>>
On Sat, May 29, 2010 at 8:34 PM, andrew cooke <and...@acooke.org> wrote:
>
> This is a bit embarassing, but I seem to be misunderstanding how \b
> works in regexps.
>
> Please can someone explain why the following fails:
>
> from re import compile
>
> p = compile(r'\bword\b')
> m = p.match(' word ')
> assert m
>
> My understanding is that \b matches a space at the start or end of a
> word, and that "word" is a word - http://docs.python.org/library/re.html
>
> What am I missing here? I suspect I am doing something very stupid.
>
> Thanks,
> Andrew
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