[Python-ideas] Re module repeat

Devin Jeanpierre jeanpierreda at gmail.com
Mon Aug 1 02:41:45 CEST 2011


Could you elaborate on the change? I don't understand your
modification. The regex is a different one than the original, as well.

I do agree that remembering all the groups would be nice, at least if
it could be done reasonably.

Devin

On Sun, Jul 31, 2011 at 8:36 PM, Christopher King <g.nius.ck at gmail.com> wrote:
> Dear Idealists,
>     I notice that when you do use the re module grouping, that it only tells
> you what it matched last:
> Dumb Real Python Code:
>>>> import re
>>>> match=re.search('^(?P<letter>[a-z])*$', 'abcz')
>>>> match.groupdict()
> {'letter': '0'}
> What happened to all the other matches. Now here is a cool idea.
> Cool Improved Python Code
>>>> import re
>>>> match=re.search('^(?P<letter>[a-z])*$', 'abcz')
>>>> match.groupdict()
> {'number': '0'}
> {'letter.0':'a', 'letter.1':'b', 'letter.2':'c', 'letter.3':'z'}
>
> Now, we see all that it matched. Now the problem with this and all ideas is
> reverse compatibility. So an addition is also too.
>>>> import re
>>>> match=re.search('^(?PP<number>[a-z])* and also
>>>> (?PP=letter.0)(?PP=letter.-1)$', 'abcz and also az')
>>>> match.groupdict()
> {'letter.0':'a', 'letter.1':'b', 'letter.2':'c', 'letter.3':'z'}
> Notice how I added an extra P. I also made it so that matching it in the
> text is also more adaptable. Please consider this idea.
> Sincerely,
>     Me
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