[Python-Dev] Trinary Operators

[Gary Herron]

On Thursday 06 February 2003 10:08 am, Guido van Rossum wrote:
> > Guido> I think I've seen the suggestion
> >
> > Guido>     x = (y if y>z else z)
> >
> > Guido> :-)
> >
> > That's not bad, even though it looks Perlish :-)
> >
> > It has the advantage of looking like a list comprehension.
> >
> > I presume the parentheses would be mandatory.
>
> Maybe I should write a PEP and let the folks in c.l.py vote on it,
> just for fun.  (I expect to get about as many yes votes as no votes. :-)
>

If this is just for fun, why stop with just "trinary"?  How about one
of the following (depending on ease of parsing)?  These look even more
like list comprehension.

  x = (e1 if c1        e2 if c2        e3 if c3  ...  else d)
  x = (e1 if c1  else  e2 if c2  else  e3 if c3  ...  else d)


 I guess we'd have to call it the n-ary operator.


Gary Herron