On Mar 29, 2014, at 2:53 PM, Gregory P. Smith <g...@krypto.org> wrote:
> > On Thu, Mar 27, 2014 at 3:05 PM, Antoine Pitrou <solip...@pitrou.net> wrote: > On Thu, 27 Mar 2014 18:47:59 +0000 > Brett Cannon <bcan...@gmail.com> wrote: > > On Thu Mar 27 2014 at 2:42:40 PM, Guido van Rossum <gu...@python.org> wrote: > > > > > Much better, but I'm still not happy with including %s at all. Otherwise > > > it's accept-worthy. (How's that for pressure. :-) > > > > > > > But if we only add %b and leave out %s then how is this going to lead to > > Python 2/3 compatible code since %b is not in Python 2? Or am I > > misunderstanding you? > > I think we have reached a point where adding porting-related facilities > in 3.5 may actually slow down the pace of porting, rather than > accelerate it (because people will then wait for 3.5 to start porting > stuff). > > I understand that sentiment but that is an unjustified fear. It is not a good > reason not to do it. Projects are already trying to port stuff today and > running into roadblocks when it comes to ascii-compatible bytes formatting > for real world data formats in code needing to be 2.x compatible. I'm pulling > out my practicality beats purity card here. > > Mercurial is one of the large Python 2.4-2.7 code bases that needs this > feature in order to support Python 3 in a sane manner. (+Augie Fackler to > look at the latest http://legacy.python.org/dev/peps/pep-0461/ to confirm > usefulness) That looks sufficient to me - the biggest thing is being able to do "abort: %s is broken" % some_filename_that_is_bytes and have that work sanely, as well as the numerics. This looks like exactly what we need, but I'd love to test it soon (I'm happy to build a 3.5 from tip for testing) so that if it's not Right[0] changes can be made before it's permanent. Feel encouraged to CC me on patches or something for testing (or mail me directly when it lands). Thanks! AF > > -gps
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