[Patches] [ python-Patches-1174589 ] hierarchical regular expression

[SourceForge.net]

Patches item #1174589, was opened at 2005-04-01 05:59
Message generated for change (Comment added) made by loewis
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=305470&aid=1174589&group_id=5470

Category: Library (Lib)
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Chris Ottrey (ottrey)
Assigned to: Nobody/Anonymous (nobody)
Summary: hierarchical regular expression

Initial Comment:
( from the re2 sourceforge project
http://pyre2.sourceforge.net )

The re2 library provides a hierarchical regular
expression extension to the re library.

re2 extracts a hierarchy of named groups from a string,
rather than the flat, incomplete dictionary that the
standard re module returns. 

>>> import re
>>> buf='12 drummers drumming, 11 pipers piping, 10
lords a-leaping'
>>> regex='^((?P<verse>(?P<number>\d+)
(?P<activity>[^,]+))(, )?)*$'
>>> pat1=re.compile(regex)
>>> m=pat1.match(buf)
>>> m.groupdict()
{'verse': '10 lords a-leaping', 'number': '10',
'activity': 'lords a-leaping'}

>>> import re2
>>> buf='12 drummers drumming, 11 pipers piping, 10
lords a-leaping'
>>> regex='^((?P<verse>(?P<number>\d+)
(?P<activity>[^,]+))(, )?)*$'
>>> pat2=re2.compile(regex)
>>> x=pat2.extract(buf)
>>> x
{'verse': [{'number': '12', 'activity': 'drummers
drumming'}, {'number': '11', 'activity': 'pipers
piping'}, {'number': '10', 'activity': 'lords a-leaping'}]}

(See http://pyre2.sourceforge.net/ for more details.)

----------------------------------------------------------------------

>Comment By: Martin v. Löwis (loewis)
Date: 2005-04-01 21:57

Message:
Logged In: YES 
user_id=21627

Is this a patch? If so, where is the code, and are you its
author?

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=305470&aid=1174589&group_id=5470