On 03/27/2014 10:29 AM, Guido van Rossum wrote:
I also don't understand why we can't use %b instead of %s. AFAIK %b currently
doesn't mean anything and I somehow don't
expect we're likely to add it for other reasons (unless there's a proposal I'm
missing?). Just like we use %a instead of
%r to remind people that it's not quite the same (since it applies
.encode('ascii', 'backslashreplace')), shouldn't we
use anything *but* %s to remind people that that is also not the same (not at
all, in fact)? The PEP's argument against
%b ("rejected as not adding any value either in clarity or simplicity") is
hardly a good reason.
The biggest reason to use %s is to support a common code base for 2/3 endeavors. The biggest reason to not include %b
is that it means binary number in format(); given that each type can invent it's own mini-language, this probably isn't
a very strong argument against it.
I have moderate feelings for keeping %s as a synonym for %b for backwards compatibility with Py2 code (when it's
appropriate).
--
~Ethan~
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