code: def datetime_to_time(date, time):
      
      if (255 in date) or (255 in time):
          raise RuntimeError("specific date and time required")
  
      time_tuple = (
          date[0]+1900, date[1], date[2],
          time[0], time[1], time[2],
          0, 0, -1,
          )
      return _mktime(time_tuple)
docs: Take the date and time 4-tuples and return the time in seconds since
      the epoch as a floating point number.