On Sat, May 5, 2018 at 1:17 AM, Ian Kelly <ian.g.ke...@gmail.com> wrote:
> On Fri, May 4, 2018 at 7:01 AM, Steven D'Aprano
> <steve+comp.lang.pyt...@pearwood.info> wrote:
>> Here are the specifications:
>>
>> * you must use lambda, not def;
>
> Why? This seems like an arbitrary constraint.
>
> def itemgetter2(*items, default):
> return lambda seq: tuple(get_default(seq, item, default) for item in
> items)
>
> def get_default(seq, item, default):
> try:
> return seq[item]
> except (IndexError, KeyError):
> return default
>
> py> f = itemgetter2(1, 6, default="spam")
> py> f("Hello World!")
> ('e', 'W')
> py> f("Hello!")
> ('e', 'spam')
PEP 463 wants to say hello.
ChrisA
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