Proposed PEP for a Conditional Expression

[Markus Schaber]

Hi,

maxm <maxm at normik.dk> schrub:

> Besides ... what could be simpler than using the fact that booleans in
> Python is either 1 or 0:
> 
> #################################
>>>> a=3
>>>> b=4
>>>> print ('number two', 'number one')[a < b]
>>>> number one

This does not short-cirquit evaluate.

> or if you want to get the result of a functionwith only the choosen
> function evaluated:
> 
> #################################
>>>> def n1():
>>>>     return 'Number one'
>>>> def n2():
>>>>     return 'Number two'
>>>> print (n2, n1)[a < b]()
>>>> Number one
> 
> Any sane Python programmer will grasp those IMMEDIATELY!

That does short-cirquit, but has limits on the expressions you can use 
as n1 and n2 (may be that gamma and nested scopes help here).

markus

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