On 12/4/10, Steven D'Aprano <st...@pearwood.info> wrote:
> Alex Hall wrote:
>> On 12/4/10, Alan Gauld <alan.ga...@btinternet.com> wrote:
>>> "Steven D'Aprano" <st...@pearwood.info> wrote
>>>
>>>>>>> for i in (1, 2, 3):
>>>> ... print(i, "spam", end="\n" if i==3 else "***")
>>> Ooooh! A new trick.
>>> I hadn't thought of using the conditional expression there but it
>>> makes a lot of sense.
>>> Definitely more fun and flexible than the old comma at the end of a
>>> print in v2 :-)
>> So is this a python3.x feature only? Is there an equivallent in 2.x? I
>> had not realized if statements could be used in calling functions like
>> that or that they could be arranged in that way, but I am sticking to
>> python2 since most packages are still written for it.
>
>
> Python has had "if" expressions (also known as the ternary operator)
> since Python2.5. You can write:
>
> true_value if condition else false_value
How cool!! I never knew that.
>
> anywhere that will accept an expression. E.g.:
>
> len("chicken" if today == tuesday else "fish")
>
> Since Python2.6, you can get the print function by using:
>
> from __future__ import print_function
>
> Note that there are TWO underscores at the start and end of
> "__future__", and that like all __future__ imports it must be the first
> executable line of your script or module.
>
>
> --
> Steven
>
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--
Have a great day,
Alex (msg sent from GMail website)
mehg...@gmail.com; http://www.facebook.com/mehgcap
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