datetime.tzinfo code example
Example 1: datetime python timezone
import datetime
import pytz
my_date = datetime.datetime.now(pytz.timezone('US/Pacific'))
Example 2: python datetime
from datetime import date
f_date = date(2014, 7, 2)
l_date = date(2014, 7, 11)
delta = l_date - f_date
print(delta.days)