Operator Precedence/Boolean Logic
Marko Rauhamaa
marko at pacujo.net
Thu Jun 23 05:10:54 EDT 2016
Lawrence D’Oliveiro <lawrencedo99 at gmail.com>:
> On Thursday, June 23, 2016 at 8:17:02 PM UTC+12, Marko Rauhamaa wrote:
>> if len(leftover) > 0: # no, I'd never write this
>> ...
>
> I regularly write “len(leftover) != 0”. Why not?
The __len__ method is not guaranteed to execute in O(1). See:
<URL: https://docs.python.org/3/reference/datamodel.html?highlig
ht=__len__#object.__len__>
Marko
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