returning all matching groups with re.search()

MRAB python at mrabarnett.plus.com
Fri Feb 11 15:54:47 CET 2011


On 11/02/2011 04:34, Roland Mueller wrote:
> Hello,
>
> On 02/07/2011 06:26 PM, Mauro Caceres wrote:
>> >>> import re
>> >>> help(re.findall)
>> Help on function findall in module re:
>>
>> findall(pattern, string, flags=0)
>> Return a list of all non-overlapping matches in the string.
>> If one or more groups are present in the pattern, return a
>> list of groups; this will be a list of tuples if the pattern
>> has more than one group.
>> Empty matches are included in the result.
>>
>> >>> re.findall('e','fredbarneybettywilma')
>> ['e', 'e', 'e']
>
> depending on what is intended the non-overlapping behaviour of findall()
> may cause some problem:
>
>  >>> re.findall('.[aeiou].','fredbarneybettywilma')
> ['red', 'bar', 'ney', 'bet', 'wil']
>
>  >>> re.findall('.[aeiouy].','fredbarneybettywilma')
> ['red', 'bar', 'ney', 'bet', 'tyw']
>
Overlapping matches are supported by this regex module:

     http://pypi.python.org/pypi/regex



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