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Groups > comp.lang.python > #105019
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|---|---|
| From | Peter Otten <__peter__@web.de> |
| Newsgroups | comp.lang.python |
| Subject | Re: empty clause of for loops |
| Date | Wed, 16 Mar 2016 14:04:25 +0100 |
| Organization | None |
| Lines | 41 |
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André Roberge wrote:
> On Wednesday, 16 March 2016 07:23:48 UTC-3, Sven R. Kunze wrote:
>> Hi,
>>
>> a colleague of mine (I write this mail because I am on the list) has the
>> following issue:
>>
>>
>> for x in my_iterable:
>> # do
>> empty:
>> # do something else
>>
>>
>> What's the most Pythonic way of doing this?
>>
>> Best,
>> Sven
>
> for x in my_iterable:
> # do something
>
> if not my_iterable:
> # do something else
>
> André
This will only work for sequences:
>>> items = iter("abc")
>>> bool(items)
True
>>> list(items)
['a', 'b', 'c']
>>> bool(items) # still true...
True
>>> list(items) # ... but empty
[]
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empty clause of for loops "Sven R. Kunze" <srkunze@mail.de> - 2016-03-16 11:23 +0100
Re: empty clause of for loops Steven D'Aprano <steve@pearwood.info> - 2016-03-16 23:08 +1100
Re: empty clause of for loops "Sven R. Kunze" <srkunze@mail.de> - 2016-03-16 15:44 +0100
Re: empty clause of for loops André Roberge <andre.roberge@gmail.com> - 2016-03-16 05:41 -0700
Re: empty clause of for loops Steven D'Aprano <steve@pearwood.info> - 2016-03-16 23:59 +1100
Re: empty clause of for loops Peter Otten <__peter__@web.de> - 2016-03-16 14:04 +0100
Re: empty clause of for loops Palpandi <palpandi111@gmail.com> - 2016-03-18 12:10 -0700
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