Re: [Zope] Subtracting 2 datetime objects

Gitte Wange writes:

I need to figure out a start time for an object from two other start times.

I have made myself a little Python Script inside Zope to test this (because I don't know exactly how this works).

So I created myself two variables: d1 = DateTime('14:55').timeTime() d2 = DateTime('15:00').timeTime()

time = d2 - d1 This result is 300.0, as it should be....

DateTime(float) interprets the float argument as "seconds" since the epoch, which is 1970-1-1T0:0 GMT. Thus, "DateTime(300.0)" is "1970/01/01 00:05:00 GMT", which is "1970/01/01 01:05:00 GMT+1" in your local time zone. When you extract "Time", you get "01:05:00". As it should be. Work around: convert to zone "GMT" before extracting "Time". Dieter