How to convert a Python datetime object to seconds

add: http://stackoverflow.com/questions/7852855/how-to-convert-a-python-datetime-object-to-seconds

down vote

Maybe off-the-topic: to get UNIX/POSIX time from datetime and convert it back: >>> import datetime, time >>> dt = datetime.datetime(2011, 10, 21, 0, 0) >>> s = time.mktime(dt.timetuple()) >>> s 1319148000.0