Python Speech Recognition listen_in_background on button press？

import speech_recognition as sr
import threading

def button_press_callback():
    # 创建一个Recognizer对象
    r = sr.Recognizer()

    def callback(recognizer, audio):
        try:
            # 将语音转换为文本
            text = recognizer.recognize_google(audio, language="en-US")
            print("识别结果：", text)
        except sr.UnknownValueError:
            print("无法识别语音")
        except sr.RequestError as e:
            print("请求错误：", str(e))

    # 开始监听语音输入
    with sr.Microphone() as source:
        print("请按下按钮并开始说话...")
        audio = r.listen_in_background(source, callback)

    # 按下按钮后，等待一段时间后停止监听
    threading.Timer(10, audio.stop).start()

# 模拟按钮按下事件
button_press_callback()