On Tue, Oct 13, 2015 at 04:37:43PM -0700, Raymond Hettinger wrote: > We could have (and still could) make the choice to always coerce to > decimal (every float is exactly representable in decimal). Further, > any decimal float or binary float could be losslessly coerced to a > Fraction, but that probably isn't what you really want most of the > time. I think people who work in decimal usually want to stay there > and people who work with binary floating point want to stay there as > well (invisible coercions being more likely to cause pain than relieve > pain).
Further to what Raymond says, if anyone wants to persue this further, and wants to argue for such automatic promotion of float to Decimal (or vice versa), I think a good place to start would be a survey of other languages with a numeric tower. How do they handle similar situations? -- Steve _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
