RexZhang.com

import datetime, calendar, time

def timestamp2datetime(timestamp):
    return datetime.datetime.fromtimestamp(timestamp)

def date2timestamp(date):
    """local time"""
    return calendar.timegm(date.timetuple())

def date2timestamp_utc(date):
    """utc time"""
    return int(time.mktime(date.timetuple()))

def datetime2timestamp(year, month, day):
    return calendar.timegm(datetime.datetime(year, month, day).timetuple())

def time2timestamp(python_time):
    return int(python_time)

year = 2014
month = 10
day = 23
timestamp = datetime2timestamp(year, month, day)
print timestamp

today = datetime.datetime.today()
timestamp = date2timestamp(today)
print timestamp
timestamp = date2timestamp_utc(today)
print timestamp

date = timestamp2datetime(timestamp)
print date

timestamp = time2timestamp(time.time())
print timestamp

1414022400
local timestamp: 1422462994
utc timestamp: 1422434194
2015-01-28 16:36:34
1422434194