Michael Spencer wrote:
> Alex Martelli wrote:
> [explanation and the following code:]
>
>> >>> a, b, c = it.islice(
>> ... it.chain(
>> ... line.split(':'),
>> ... it.repeat(some_default),
>> ... ),
>> ... 3)
>> ...
>> ...
>> >>> def pad_with_default(N, iterable, default=None):
>> ... it = iter(iterable)
>> ... for x in it:
>> ... if N<=0: break
>> ... yield x
>> ... N -= 1
>> ... while N>0:
>> ... yield default
>> ... N -= 1
>
> Why not put these together and put it in itertools, since the requirement
> seems
> to crop up every other week?
>
> >>> line = "A:B:C".split(":")
> ...
> >>> def ipad(N,iterable, default = None):
> ... return it.islice(it.chain(iterable, it.repeat(default)), N)
> ...
> >>> a,b,c,d = ipad(4,line)
> >>> a,b,c,d
> ('A', 'B', 'C', None)
Good idea!
(+1 if this was posted on python-dev!)
Reinhold
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