How about adding rational fraction to Python?

[Grant Edwards]

On 2008-02-26, Torsten Bronger <bronger at physik.rwth-aachen.de> wrote:
> Hallöchen!
>
> Grant Edwards writes:
>
>> [...]
>>
>> Nope.  I would prefer that int OP int always produce an int.
>
> And 2**-1?

An error.

> Your formulation tries to suggest some sort of logical
> consequence but in my opinion, it's still a mere matter of
> taste and habits.  I remember my first steps in C++ 12 years
> ago when I tried to implement a couple of astronomical
> formulae, always getting false results because C++ calculated
> 3/4=0.
>
> I think the only real reason for people prefering int/int=int
> is that computers can deal with inteters better than with
> floats, resulting in int-only arithmetic in computer
> languages.  However, I don't consider this a particularly good
> reason.

Well, another reason is that there is existing code that
depends on int/int => int.

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