code: def get_slot(handler_input, slot_name):
      # type: (HandlerInput, str) -> Optional[Slot]
      
      request = handler_input.request_envelope.request
      if isinstance(request, IntentRequest):
          if request.intent.slots is not None:
              return request.intent.slots.get(slot_name, None)
          else:
              return None
  
      raise TypeError("The provided request is not an IntentRequest")
docs: Return the slot information from intent request.
  
      The method retrieves the slot information
      :py:class:`ask_sdk_model.slot.Slot` from the input intent request
      for the given ``slot_name``. More information on the slots can be
      found here :
      https://developer.amazon.com/docs/custom-skills/request-types-reference.html#slot-object
  
      If there is no such slot, then a ``None``
      is returned. If the input request is not an
      :py:class:`ask_sdk_model.intent_request.IntentRequest`, a
      :py:class:`TypeError` is raised.
  
      :param handler_input: The handler input instance that is generally
          passed in the sdk's request and exception components
      :type handler_input: ask_sdk_core.handler_input.HandlerInput
      :param slot_name: Name of the slot that needs to be retrieved
      :type slot_name: str
      :return: Slot information for the provided slot name if it exists,
          or a `None` value
      :rtype: Optional[ask_sdk_model.slot.Slot]
      :raises: TypeError if the input is not an IntentRequest