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

Erik Max Francis max at alcyone.com
Mon Feb 10 04:06:04 CET 2003


Andrew Koenig wrote:

> Me too.  But seriously, what's wrong with
> 
>     x = if y < 5: "Yep" else: "Nope"
> 
> I would hope the meaning is immediately obvious...

Nothing at all, I don't think.  I suggested it early on in the thread
(required parentheses or no), and it's been suggested independently (as
far as I can tell) at least two more times.  As someone pointed out,
some digging discovered that someone suggested it in a proposed PEP
which never went anywhere several years ago.

It seems to satisfy all the criteria:  reads left-to-right, is
unambiguous, is easy to understand, and requires no new keywords.

-- 
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 A lambda calculus explorer in Python.




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