[Python-ideas] Pre-PEP: adding a statistics module to Python

Joshua Landau joshua at landau.ws
Mon Aug 5 08:15:18 CEST 2013


On 5 August 2013 06:55, Ronald Oussoren <ronaldoussoren at mac.com> wrote:

>
> On 4 Aug, 2013, at 3:51, Steven D'Aprano <steve at pearwood.info> wrote:
>
> > On 04/08/13 05:47, Alexander Belopolsky wrote:
> >
> >> The PEP does not mention statistics.sum(), but the reference
> implementation
> >> includes it.  I am not sure stdlib needs the third sum function after
> >> builtins.sum and math.fsum.  I think it will be better to improve
> >> builtins.sum instead.
> >
> >
> > I don't know enough C to volunteer to do that. If the built-in sum() is
> improved to the point it passes my unit tests, I would consider using it in
> the future.
>
> Does math.fsum pass your tests? From the description and references to the
> cookbook it seems that your sum is functionally equivalent to math.fsum.
>

math.fsum casts to floats, so no¹.

¹ Just an educated guess based off of his previous comments.
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