On Fri, 18 Nov 2005 11:17:17 -0800, David Wahler wrote:
> Daniel Crespo wrote:
>> I would like to know how can I do the PHP ternary operator/statement
>> (... ? ... : ...) in Python...
>>
>> I want to something like:
>>
>> a = {'Huge': (quantity>90) ? True : False}
>
> Well, in your example the '>' operator already returns a boolean value
> so you can just use it directly. Hoewver, I agree that there are
> situations in which a ternary operator would be nice. Unfortunately,
> Python doesn't support this directly; the closest approximation I've
> found is:
>
>>>> (value_if_false, value_if_true)[boolean_value]
Which doesn't short-circuit: both value_if_false and value_if_true are
evaluated.
WHY WHY WHY the obsession with one-liners? What is wrong with the good old
fashioned way?
if cond:
x = true_value
else:
x = false_value
It is easy to read, easy to understand, only one of true_value and
false_value is evaluated. It isn't a one-liner. Big deal. Anyone would
think that newlines cost money or that ever time you used one God killed a
kitten.
--
Steven.
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