On Sun, 2006-04-02 at 23:26 -0500, Ian Bicking wrote: > Georg Brandl wrote: > > BTW, has anyone seen string.Template being used somewhere? > > I use it from time to time, usually when formatting user-provided > strings (because "%(foo)s" is not very pleasant or easy-to-explain > compared to "$foo"). However, I *never* use it internally in code, > because the overhead of importing string and creating the template far > outweighs the inconvenience of %-based substitution. Oh, and I really > like %r.
Good point. Yes string.Template was designed primarily for i18n applications for the reasons above, and because %(foo)s is more error prone than necessary. > I'd personally be very happy if $"$foo" worked, as well as > "$foo".substitute(). $/shell-style substitution is the norm out in the > world, not the %/printf style that Python uses; it'd be nice to move > towards that norm. string.Template is a bit of a tease that way, since > it doesn't actually provide a very convenient alternative to the bulk of > what % is used for. I don't much like the $"" prefix, but I agree that it would be nicer if there were more direct support for $-strings. OTOH, I don't see a good way to marry the rich coercion of %-substitution with the simplicity of $-substition. I wouldn't want to lose that simplicity to gain that richness in $-strings, so I suppose a prefix might be necessary. -Barry
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