Eric Smith <e...@trueblade.com> wrote: > Stefan Krah wrote: > >Hi, > > > >I think http://www.python.org/dev/peps/pep-3101/ is too liberal with the > >choice of fill characters for numerical values. As far as I can see, this > >is quite legal: > > > > > >Python 2.7a0 (trunk:76132M, Nov 6 2009, 15:20:35) > >[GCC 4.1.3 20080623 (prerelease) (Ubuntu 4.1.2-23ubuntu3)] on linux2 > >Type "help", "copyright", "credits" or "license" for more information. > >>>>from decimal import * > >>>>format(Decimal(4), "9<10") > >'4999999999' > >>>>format(Decimal(4), "9>10") > >'9999999994' > >>>>format(Decimal(4), "->2") > >'-4' > > > > > >I propose to disallow digits and '+-' fill characters for numerical values, > >except for the combination '0, left-padding'. Actually, I'd prefer to allow > >only whitespace and '0, left-padding'. > > Why? > > What problem are you trying to prevent that would justify the extra code > to implement this and the extra documentation to explain it?
I simply think that apart from rounding, the output of format should not change the numerical value of its argument. The format functions in C do not allow this to happen. Are there other languages where this is possible? Stefan Krah _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
