[Python-Dev] Issue 2736: datetimes and Unix timestamps (original) (raw)

Dirkjan Ochtman dirkjan at ochtman.nl
Tue Jun 5 16:19:50 CEST 2012

On Tue, Jun 5, 2012 at 3:45 PM, Guido van Rossum <guido at python.org> wrote:

For datetimes with tzinfo, dt.totimestamp() should return (dt - epoch).totalseconds() where epoch is datetime.datetime.fromtimestamp(0, datetime.timezone.utc); for timezones without tzinfo, a similar calculation should be performed assuming local time. The utctotimestamp() method should insist that dt has no tzinfo and then do a similar calculation again assuming the implied UTC timezone.

It would be nice if utctotimestamp() also worked with datetimes that have tzinfo set to UTC.

And while I don't think we really need it, if there are concerns that some other epochs may be useful, we could add an optional epoch argument.

Cheers,

Dirkjan

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