Guido van Rossum wrote: > On Jan 27, 2008 8:16 PM, Nick Coghlan <[EMAIL PROTECTED]> wrote: >> eric.smith wrote: >>> Author: eric.smith >>> Date: Sun Jan 27 22:07:59 2008 >>> New Revision: 60376 >>> >>> Modified: >>> python/branches/py3k/Lib/test/test_float.py >>> python/branches/py3k/Lib/test/test_long.py >>> python/branches/py3k/Objects/stringlib/formatter.h >>> Log: >>> Restrict format presentation types to those specified in the 'Standard >>> Format Specifiers' section of PEP 3101. >> I think this checkin goes too far in removing support for the floating >> point formatting codes from integers. Guido objected to %d working on >> floats last year, but expected %f and friends to continue to work on >> integers [1]. This makes sense when you consider that there is no data >> loss in displaying an integer as a floating point number, while there is >> a definite potential for data loss when going the other way. >> >> Perhaps the PEP needs a tweak (referencing Guido's email) to state >> explicitly that the builtin integers understand the floating point >> formatting codes, but the builtin and standard library floating point >> types don't understand the integer codes? That area of the PEP is >> slightly problematic anyway where it suggests that integers could handle >> the floating point codes by delegating to float() - that isn't quite >> true, since the maximum precision on floats is less than the maximum >> precision on integers. >> >> Cheers, >> Nick. >> >> [1] >> http://mail.python.org/pipermail/python-3000/2007-August/009066.html > > Agreed with Nick -- in general, the idea is that ints should be > allowed whenever floats are expected -- just not the other way around! > Python 2.x broke this in one important place, division -- 2/3 and > 2.0/3.0 had different meanings there. We are fixing this in 3.0. > Please maintain this rule for formatting! >
Okay, I'll restore ints understanding float formatting codes. _______________________________________________ Python-3000 mailing list [email protected] http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
