I am writing a program which deals a lot with timezones and crossing them. The two things I deal with most are creating a datetime object from "now" and then localizing a naive datetime object. To create a datetime object from now in the pacific timezone, I am currently doing this (python 2.7.2+) from datetime import datetime import pytz la = pytz.timezone("America/Los_Angeles") now = datetime.now(la) Is this correct with regards to DST? If not, I suppose I should be doing: now2 = la.localize(datetime.now()) My question is why? Can anyone show me a case where the first is wrong and the seconds is right? As for my seconds question, suppose I had a naive date and time from some user input for 9/1/2012 at 8:00am in Los Angeles, CA. Is the right way to make the datetime like this: la.localize(datetime(2012, 9, 1, 8, 0)) If not, how should I be building these datetimes? Continue reading...
