智能语音对话机器人新年促销

import speech_recognition as sr
from gtts import gTTS
import os

def listen():
    r = sr.Recognizer()
    with sr.Microphone() as source:
        print("Listening...")
        audio = r.listen(source)
    try:
        text = r.recognize_google(audio)
        print(f"User said: {text}")
        return text
    except sr.UnknownValueError:
        print("Sorry, I did not understand that.")
        return None

def speak(text):
    tts = gTTS(text=text, lang='en')
    tts.save("response.mp3")
    os.system("mpg321 response.mp3")

def main():
    while True:
        user_input = listen()
        if user_input:
            if "promotion" in user_input.lower():
                speak("Happy New Year! We have special discounts available. Would you like to know more?")
            else:
                speak("I'm here to help. What can I do for you today?")

if __name__ == "__main__":
    main()