import datetime

now = datetime.datetime.now()
print(now) # 2017-12-15 14:06:00.948099

timestamp_now = datetime.datetime.timestamp(now)
print(timestamp_now) # 1513314360.948099

now_from_ts = datetime.datetime.fromtimestamp(timestamp_now)
print(now_from_ts) # 2017-12-15 14:08:07.689062