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Wed Sep 8 16:56:28 CEST 2004 · https://mail.python.org/pipermail/python-dev/2004-September/048692.html

Fredrik Lundh wrote:
> Barry wrote:
> 
>>I'll point out that Template was very deliberately subclassed from
>>unicode, so Template instances /are/ unicode objects.  From the
>>standpoint of type conversion, using /F's notation, T(8) == U, thus
>>because U % 8 == U, T(8) % 8 == U.
> 
> from a user perspective, there's no reason to make templates a sub-
> class of unicode, so the rest of your argument is irrelevant.

Templates are meant to template *text* data, so Unicode is
the right choice of baseclass from a design perspective.

> instead of looking at use patterns, you're stuck defending the existing
> code.  that's not a good way to design usable code.

Perhaps I'm missing something, but where would you use Templates
for templating binary data (where strings or bytes would be a more
appropriate design choice) ?

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Alternative Implementation for PEP292:SimpleString Substitutions