[issue27832] fractions.Fraction with 3 arguments: error passes silently

[Steven D'Aprano]

Steven D'Aprano added the comment:

At the risk of muddying the waters even further, I'd like to make _normalize a public parameter in Python 3.7. There's an interesting operation you can do with fractions, the mediant:

https://en.wikipedia.org/wiki/Mediant_%28mathematics%29

http://www.mathteacherctk.com/blog/2011/02/06/mediant-fractions-and-simpsons-paradox/

It's easy to work with mediants provided you have a way to prevent fractions from being normalised automatically.

So I'm +1 on making _normalize a keyword-only argument for 3.6 as a first step.

----------
nosy: +steven.daprano

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27832>
_______________________________________