Experimenting with time zones with Python datetime module

time_test.py

from __future__ import print_function
from datetime import datetime
import pytz

epoch_time = 1493307387

dt1 = datetime.fromtimestamp(epoch_time)
print("Local time:", dt1)
print("Not tz aware:", dt1.tzinfo)
print()

dt2 = datetime.utcfromtimestamp(epoch_time)
print("UTC time:", dt2)
print("Not tz aware:", dt2.tzinfo)
print()

dt3 = dt2.replace(tzinfo=pytz.utc)
print("UTC time:", dt3)
print("tz aware:", dt3.tzinfo)
print()

dt4 = datetime.fromtimestamp(epoch_time, tz=pytz.utc)
print("UTC time:", dt4)
print("tz aware:", dt4.tzinfo)
print()