[Datetime-SIG] PEP-0500 (Alternative datetime arithmetic) Was: PEP 495 ... is ready ...

[Chris Barker]

On Tue, Aug 18, 2015 at 4:12 PM, Guido van Rossum <guido at python.org> wrote:

>   At the end of the day, I will not be surprised if aware datetime
>> subtraction is 10x slower than naive and every Python textbook recommends
>> to avoid doing arithmetic with aware datetime objects.
>>
>>
> I doubt it. Most textbooks aren't that concerned with saving a few cycles.
> (Do most Python textbooks even discuss the cost of object creation or
> function calls?) Anyways, wouldn't PEP 500 be even slower?
>

and the folks that DO care about performance will probaly want to use
numpy's datetime64 anyway :-)

-Chris


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