On Fri, 03 Dec 2010 10:15:58 -0800, Paul Rubin wrote:
> Steven D'Aprano <steve+comp.lang.pyt...@pearwood.info> writes:
>> def func(iterable):
>> it = iter(iterable)
>> failed = False
>> try:
>> x = next(it)
>> except StopIteration:
>> failed = True
>> if failed:
>> raise ValueError("can't process empty iterable")
>> print(x)
>
> Untested:
>
> from itertools import islice
>
> def func(iterable):
> xs = list(islice(iter(iterable), 1))
> if len(xs) == 0:
> raise ValueError(...)
> print xs[0]
If you're intention was to make me feel better about the version above
that sets a flag, you succeeded admirably!
:)
--
Steven
--
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