Python datetime object <-> Unix time

unixtime.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import calendar
import datetime
import time

import pytz


# Naive (local time)
now = datetime.datetime.now()
print(now)

# Naive (local time) -> Unix time
unix = int(time.mktime(now.timetuple()))
print(unix)

# Unix time -> Naive (local time)
now = datetime.datetime.fromtimestamp(unix)
print(now)


# Naive (UTC)
now = datetime.datetime.utcnow()
print(now)

# Naive (UTC) -> Unix time
unix = calendar.timegm(now.utctimetuple())
print(unix)

# Unix time -> Naive (UTC)
now = datetime.datetime.utcfromtimestamp(unix)
print(now)


# Aware (UTC)
tz = pytz.utc
now = datetime.datetime.now(tz)
print(now)

# Aware (UTC) -> Unix time
unix = calendar.timegm(now.utctimetuple())
print(unix)

# Unix time -> Aware (UTC)
now = datetime.datetime.fromtimestamp(unix, tz=tz)
print(now)


# Aware (PST)
tz = pytz.timezone("US/Pacific")
now = datetime.datetime.now(tz)
print(now)

# Aware (PST) -> Unix time
unix = calendar.timegm(now.utctimetuple())
print(unix)

# Unix time -> Aware (PST)
now = datetime.datetime.fromtimestamp(unix, tz=tz)
print(now)