RASA调度提示消息中的问题

Question

我想使用dispatcher.utter_message来显示消息，即使插槽不存在或找不到时也该怎么办。我在下面为自定义操作编写了代码，其中有时找不到插槽，但我想分派消息。我怎样才能做到这一点。请帮助

from future import absolute_import from future import division from future import unicode_literals

from rasa_core_sdk import Action from rasa_core_sdk.events import SlotSet import pandas as pd

df = pd.read_excel(“C:\Samples\faqxxx.xlsx”)

class ActionWeather(Action):

def name(self):
    return 'action_weather'

def run(self,dispatcher, tracker, domain):
    loc = tracker.get_slot('faq')
    msg=tracker.latest_message['text']
    print(msg)
    intent_name = tracker.latest_message['intent'].get('name')
    result = df['fixit'][df['faq'] == intent_name]
    dispatcher.utter_message(result[0])
    return [SlotSet('faq', loc)]