Convert Python datetime into timestamp

datetime-to-timestamp.py

def datetime_to_timestamp(dt, epoch=datetime(1970, 1, 1)):
    """
    Convert datetime into timestamp (in seconds).

    :param dt:      Datetime object to convert
    :param epoch:   Base Epoch to be counted from, default is 01.01.1970
    :return:        Number of seconds since the Epoch
    """
    return int((dt - epoch).total_seconds())