[Python-ideas] Integrate some itertools into the Python syntax

[Nikolaus Rath]

On Mar 24 2016, Chris Barker <chris.barker-32lpuo7BZBA at public.gmane.org> wrote:
> And it came up in another recent thred about a mechanism for doing
> something after a for loop that didn't loop -- in that case, for sequences,
> the idiom is obvious:
>
> if seq:
>     do_the_for_loop
> else:
>     do_somethign else since the loop wont have run.
>
> But when you plug in an arbitrary iterable into that, it doesn't work, and
> there is no easy, obvious, and robust idiom to replace that with.

Hmm. 

empty = True
for stuff in seq:
    empty = False
    do_stuff
if empty:
    do_something_else

is two lines longer than the above (if you expand the do_the_for_loop)
and seems pretty obvious and robust. What do you dislike about it?



Best,
-Nikolaus
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