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Thu Sep 16 17:40:53 CEST 2010 · http://mail.python.org/pipermail/python-dev/2010-September/103732.html

On Thu, 16 Sep 2010 11:30:12 -0400
"R. David Murray" <rdmurray at bitdance.com> wrote:
> 
> And then BaseHeader uses self.lit.colon, etc, when manipulating strings.
> It also has to use slice notation rather than indexing when looking at
> individual characters, which is a PITA but not terrible.
> 
> I'm not saying this is the best approach, since this is all experimental
> code at the moment, but it is *an* approach....

Out of curiousity, can you explain why polymorphism is needed for
e-mail? I would assume that headers are bytes until they are parsed, at
which point they become a pair of unicode strings (one for the header
name and one for its value).

Regards

Antoine.

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[Python-Dev] Polymorphic best practices [was: (Not) delaying the 3.2 release]