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Sun Jun 15 14:40:36 CEST 2008 · http://mail.python.org/pipermail/python-dev/2008-June/080436.html

Armin Ronacher wrote:
>   - in XML/HTML processing it's often desired to keep the attributes of
>     an tag ordered during processing.  So that input ordering is the
>     same as the output ordering.
> 
>   - [...]
>     XML libraries such as etree could add support for it when creating
>     elements or return attribute dicts.

I hope that what you call "etree" here (I assume you mean ElementTree) would
stay compatible to lxml.etree in that case. Meaning: adding or replacing an
attribute removes a possibly existing entry and appends the new value at the end.

Stefan

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[Python-Dev] Proposal: add odict to collections