[Python-ideas] datetime: Support infinity

Antoine Pitrou solipsis at pitrou.net
Wed Jan 28 02:25:13 CET 2015

On Wed, 28 Jan 2015 11:46:38 +1100
Steven D'Aprano <steve at pearwood.info> wrote:
> The obvious question is "What does Postgresql do?"
> Same for use-cases, which Antoine asked for. The primary use-case is to 
> improve compatibility with Postgresql while still treating the full 
> range of dates up to and including date.max as regular dates.
> I'm not convinced that numpy is the right library to follow here. Unless 
> there are cases where you would perform calculations with Not-A-Time, an 
> exception would probably be better suited.

I should add that I mentioned Numpy as a datapoint, but
knowledgeable people I talked to generally agreed that Numpy's
datetime64/timedelta64 design isn't very good (actually, it has an
even wonkier feature that's only exposed internally AFAIK). So
"Not-A-Time" need not necessarily be implemented in the stdlib ;)



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