Suggestion for fixing %(foo)s (Re: [Python-Dev] PEP 292-related: why string substitution is not the same operation as data formatting)
Guido van Rossum
guido@python.org
Mon, 15 Jul 2002 09:05:29 -0400
> > > Guido, can you please, for our enlightenment, tell us what are the
> > > reasons you feel %(foo)s was a mistake?
> >
> > Because of the trailing 's'. It's very easy to leave it out by
> > mistake
>
> How about introducing a new format
>
> %{foo}
>
> which is defined to be the same as %(foo)s.
Maybe too subtle (you'd really have to explain the history to make
people understand why there's both %() and %()), and doesn't solve the
compile time / run time issue IMO.
--Guido van Rossum (home page: http://www.python.org/~guido/)