Re: Confusing datetime.datetime

2012-07-08 Thread Damjan
Because x1 and x2 have different time zones. The tzinfo field in x2 is equal to TZ and has a UTC offset of 1 hour. The tzinfo field in x1 contains the DST version of that timezone, with a UTC offset of 2 hours, because Skopje is currently on DST. I think you want: x2 = TZ.localize(datetime(x1.y

Re: Confusing datetime.datetime

2012-07-06 Thread Hans Mulder
On 6/07/12 00:55:48, Damjan wrote: > On 05.07.2012 16:10, Damjan wrote: >> I've been struggling with an app that uses >> Postgresql/Psycopg2/SQLAlchemy and I've come to this confusing >> behaviour of datetime.datetime. > > > Also this: > > #! /usr/bin/python2 > # retardations in python's dateti

Re: Confusing datetime.datetime

2012-07-05 Thread Damjan
from datetime import datetime, timedelta, tzinfo ZERO = timedelta(0) HOUR = timedelta(hours=1) class UTC(tzinfo): def utcoffset(self, dt): return ZERO def tzname(self, dt): return "UTC" def dst(self, dt): return ZERO utc = UTC() t1 = datetime.now(tz=utc)

Re: Confusing datetime.datetime

2012-07-05 Thread Steven D'Aprano
On Fri, 06 Jul 2012 00:55:48 +0200, Damjan wrote: > Also this: > > #! /usr/bin/python2 > # retardations in python's datetime > > import pytz > TZ = pytz.timezone('Europe/Skopje') > > from datetime import datetime > > x1 = datetime.now(tz=TZ) > x2 = datetime(x1.year, x1.month, x1.day, tzinfo=TZ)

Re: Confusing datetime.datetime

2012-07-05 Thread Damjan
On 05.07.2012 16:10, Damjan wrote: I've been struggling with an app that uses Postgresql/Psycopg2/SQLAlchemy and I've come to this confusing behaviour of datetime.datetime. Also this: #! /usr/bin/python2 # retardations in python's datetime import pytz TZ = pytz.timezone('Europe/Skopje') fr