For review: PEP 308 - If-then-else expression

[Hans Nowak]

Guido van Rossum wrote:

>     The proposed syntax is as follows:
> 
>         <expression1> if <condition> else <expression2

-1.  This just "feels" wrong.  First you have the first option, then the 
condition, then the second option.

>     Examples of how this works out:
> 
>         x if C else y if D else z <==> x if C else (y if D else z)
>         x or y if C else z        <==> (x or y) if C else z
> 	x if C else y or z        <==> x if C else (y or z)
>         lambda: x if C else y     <==> lambda: (x if C else y)
>         x if C else lambda: y     <==> SyntaxError
>         x if C else y, z          <==> (x if C else y), z
>         x, y if C else z          <==> x, (y if C else z)

None of these seem especially readable to me.  Quite the opposite.

I think the drawbacks outweigh the benefits.  Let's not add this.

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