code: def dehydrate_datetime(value):
      
  
      def seconds_and_nanoseconds(dt):
          if isinstance(dt, datetime):
              dt = DateTime.from_native(dt)
          zone_epoch = DateTime(1970, 1, 1, tzinfo=dt.tzinfo)
          t = dt.to_clock_time() - zone_epoch.to_clock_time()
          return t.seconds, t.nanoseconds
  
      tz = value.tzinfo
      if tz is None:
          # without time zone
          value = utc.localize(value)
          seconds, nanoseconds = seconds_and_nanoseconds(value)
          return Structure(b"d", seconds, nanoseconds)
      elif hasattr(tz, "zone") and tz.zone:
          # with named time zone
          seconds, nanoseconds = seconds_and_nanoseconds(value)
          return Structure(b"f", seconds, nanoseconds, tz.zone)
      else:
          # with time offset
          seconds, nanoseconds = seconds_and_nanoseconds(value)
          return Structure(b"F", seconds, nanoseconds, tz.utcoffset(value).seconds)
docs: Dehydrator for `datetime` values.
  
      :param value:
      :type value: datetime
      :return: