any() and all() on empty list?
Ron Adam
rrr at ronadam.com
Sat Apr 1 19:42:40 EST 2006
Steve R. Hastings wrote:
> On Sat, 01 Apr 2006 14:35:58 -0300, Felipe Almeida Lessa wrote:
>> Two changes:
>> - Use "is None".
>> - Use "try ... except" instead of "in"
>
> Yes.
>
>
>> Maybe you don't like my version, and the gains aren't that much, but
>> please use "is None" instead of "== None".
>
> Actually, I do like your version. And I try to always use "is None"
> instead of "== None"; today I made a mistake about it. Thank you for your
> comments.
>
> Ideally there should be an official tally() function in some module in
> Python, and then we can just use it and not worry about how to write it. :-)
And it's a good candidate to be written in C as well.
Cheers,
Ron
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