[Python-Dev] [Python-checkins] r64424 - in python/trunk:Include/object.h Lib/test/test_sys.py Misc/NEWSObjects/intobject.c Objects/longobject.c Objects/typeobject.cPython/bltinmodule.c
Raymond Hettinger
python at rcn.com
Thu Jun 26 14:50:31 CEST 2008
> Just as a contrary point, I'm not particularly keen on the output
> format (which takes the form '0b1 * 2.0 ** 0' as far as I can see),
That format was requested by everyone else on the tracker
discussion. What I originally wanted was something like 0b11.0101.
But that didn't round-trip through eval, it didn't match the style used
in the numerical papers referenced by Terry Reedy, and it didn't scale
well with inputs like 1.1E+100.
> and I'm definitely not keen on the fact that it's overloaded on the
> hex/bin/oct builtins.
>
> Can't it be a separate function?
Simplicity. bin/oct/hex have the job of giving alternate base representations for numbers.
Nothing is gained by adding a duplicate set of functions in the math module for float inputs.
> would
> it not be better if it were machine-parseable, rather than executable?
We already have struct.pack for machine-parseable output.
This is supposed to be human readable as well as providing
an exact, platform indepent way of specifying a particular
float value (something that's useful in testing algorithms like that in math.sum()).
Raymond
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