Django: How to retrieve datetime as timezone-aware

Question

At one point in my program, I save a timezone aware (ISO8601 with Z) datetime:

param.updated=iso8601.parse_date(updated)
param.save

Later, I retrieve it to do a comparison:

if (newparam.update > Parameter.objects.get(id=id).updated):
....

Result:

TypeError: can't compare offset-naive and offset-aware datetimes

What am I doing wrong? Am I losing the timezone-awareness when I'm saving, or when I retrieve? How can I restore it?

Python 2.6.x, Django 1.3

Answer 1

Django的1.4对时区的支持，检查这出。