[Python-Dev] PEP 292, Simpler String Substitutions

[Delaney, Timothy]

> From: barry@zope.com [mailto:barry@zope.com]
> 
> >>>>> "GvR" == Guido van Rossum <guido@python.org> writes:
> 
>     GvR> That's a matter of validating the template before accepting
>     GvR> it.
> 
> True, which isn't hard to do.  You can write a regexp to extract the
> $names and then validate those.  In fact, I think this is what newer
> versions of xgettext do for Python code (albeit with the %(name)s
> syntax).

Of course, once you've validated a string, it's almost no extra work to do
the interpolation in place (at least in source code size).

Tim Delaney