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[Python-Dev] [NPERS] Re: a feature i'd like to see in python #2: indexing of match objects

Fredrik Lundh fredrik at pythonware.com
Thu Dec 7 18:43:36 CET 2006 
Talin wrote:

> Maybe instead of considering a match object to be a sequence, a match 
> object should be considered a map?

sure, except for one small thing.  from earlier in this thread:

 > Ka-Ping Yee wrote:
 >
 >> I'd say, don't pretend m is a sequence.  Pretend it's a mapping.
 >> Then the conceptual issues go away.

to which I replied:

 > almost; that would mean returning KeyError instead of IndexError for
 > groups that don't exist, which means that the common pattern
 >
 >      a, b, c = m.groups()
 >
 > cannot be rewritten as
 >
 >      _, a, b, c = m
 >
 > which would, perhaps, be a bit unfortunate.

</F>
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