谷歌应用引擎，datetime:计算时间长度

Question

关于时区，正确计算时间长度的最佳方法是:

timeLength = datetime.datetime(2012, 1, 1, 0, 0, 0) - datetime.datetime.now()

Answer 1

看看这个链接http://timezones.appspot.com/

datetime.fromtimestamp(raw_timestamp, utc) #might help

python:

from datetime import datetime
import pytz
import calendar 
calendar.timegm(pytz.timezone('Europe/Amsterdam').localize(datetime.strptime('2012-12-21 00:00:00', '%Y-%m-%d %H:%M:%S')).utctimetuple())