[issue2494] Can't round-trip datetimes<->timestamps prior to 1970 on Windows

R. David Murray added the comment: Indeed, the time module is documented as not handling timestamps before the epoch. -- nosy: +r.david.murray resolution: -> invalid stage: -> committed/rejected status: open -> closed ___ Python tracker

[issue2494] Can't round-trip datetimes<->timestamps prior to 1970 on Windows

STINNER Victor <[EMAIL PROTECTED]> added the comment: If you doesn't care to the time zone (UTC), use: >>> datetime.datetime(1970, 1, 1) + datetime.timedelta(seconds=-86400) datetime.datetime(1969, 12, 31, 0, 0) This code is portable on Windows, Linux but also works with IronPython: http://www.

[issue2494] Can't round-trip datetimes<->timestamps prior to 1970 on Windows

Christian Heimes <[EMAIL PROTECTED]> added the comment: It's most likely a platform limitation. Some platforms doen't support negative time stamps. -- nosy: +tiran __ Tracker <[EMAIL PROTECTED]> _

[issue2494] Can't round-trip datetimes<->timestamps prior to 1970 on Windows

New submission from Mark Summerfield <[EMAIL PROTECTED]>: # If you run the code below on Py30a3 you get the output shown at the end import calendar, datetime, time pastdate = datetime.datetime(1969, 12, 31) print(pastdate) timestamp = calendar.timegm(pastdate.utctimetuple()) print(timestamp) try