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Tue Mar 7 05:26:53 CET 2006 · https://mail.python.org/pipermail/python-dev/2006-March/062116.html

"Steve Holden" <steve at holdenweb.com> wrote in message 
news:440CAAFB.5060702 at holdenweb.com...
> Jim Jewett wrote:
>> I think that adding parentheses would help, by at least signalling that
>> the logic is longer than just the next (single) expression.
>>
>>     level = (0 if "absolute_import" in self.futures else -1)
>>
> Contrast with the bleeding obvious:
>
>     level = 0
>     if "absolute_import" in self.futures:
>         level = -1
>
> or even, if a certain obscurity is desirable:
>
>     level = - ("absolute_import" in self.futures)
>

Wait a second.

I may be just a user but if the above is correct then that syntax needs to 
die!
There is no logical reason for "XX if YY else ZZ" to be roughly equivlent 
to:
"if (YY) then {ZZ} else {XX}" , but AFAICT that is pretty much the way you 
expanded that.
I hope I misunderstood, or that there was a typo in a post.

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[Python-Dev] conditional expressions - add parens?