Iterate over group names in a regex match?

Brian D briandenzer at gmail.com
Tue Jan 19 18:51:54 CET 2010


On Jan 19, 11:28 am, Peter Otten <__pete... at web.de> wrote:
> Brian D wrote:
> > Here's a simple named group matching pattern:
>
> >>>> s = "1,2,3"
> >>>> p = re.compile(r"(?P<one>\d),(?P<two>\d),(?P<three>\d)")
> >>>> m = re.match(p, s)
> >>>> m
> > <_sre.SRE_Match object at 0x011BE610>
> >>>> print m.groups()
> > ('1', '2', '3')
>
> > Is it possible to call the group names, so that I can iterate over
> > them?
>
> > The result I'm looking for would be:
>
> > ('one', 'two', 'three')
> >>> s = "1,2,3"
> >>> p = re.compile(r"(?P<one>\d),(?P<two>\d),(?P<three>\d)")
> >>> m = re.match(p, s)
> >>> dir(m)
>
> ['__copy__', '__deepcopy__', 'end', 'expand', 'group', 'groupdict',
> 'groups', 'span', 'start']>>> m.groupdict().keys()
>
> ['one', 'three', 'two']>>> sorted(m.groupdict(), key=m.span)
>
> ['one', 'two', 'three']
>
> Peter

groupdict() does it. I've never seen it used before. Very cool!

Thank you all for taking time to answer the question.




More information about the Python-list mailing list