R. David Murray <rdmur...@bitdance.com> added the comment:

You are correct that this is a feature request as written.  I think there is 
also a doc bug (the docs should probably mention that changing delimiter after 
class creation is a no-op).

To add this feature the computation of the regex would need to be moved from 
the metaclass init to the object init.  The question is, was doing this in a 
metaclass a design decision (perhaps a micro-optimization?), or a "cute trick" 
that turns out to cause unintuitive consequences?  I think Barry was involved 
in adding the Template feature, so I'm adding him as nosy (I don't have a clone 
handy to check hg annotate).

----------
nosy: +barry, r.david.murray
versions: +Python 3.3 -Python 3.2

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<http://bugs.python.org/issue12518>
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