如何在自动热键脚本中使用Google speech to text api？

import pyaudio
from google.cloud import speech

# 设置Google Cloud认证密钥文件路径
key_file = 'path/to/keyfile.json'

# 创建Speech to Text客户端
client = speech.SpeechClient.from_service_account_json(key_file)

# 配置音频输入参数
audio_config = speech.RecognitionConfig(
    encoding=speech.RecognitionConfig.AudioEncoding.LINEAR16,
    sample_rate_hertz=16000,
    language_code='en-US'
)

# 打开音频流
stream = pyaudio.PyAudio().open(
    format=pyaudio.paInt16,
    channels=1,
    rate=16000,
    input=True,
    frames_per_buffer=1024
)

# 开始语音识别
stream.start_stream()
print("Listening...")

# 读取音频数据并发送给Google Speech to Text API
while True:
    data = stream.read(1024)
    audio = speech.RecognitionAudio(content=data)
    response = client.recognize(config=audio_config, audio=audio)

    for result in response.results:
        print('Transcript: {}'.format(result.alternatives[0].transcript))

# 停止语音识别并关闭音频流
stream.stop_stream()
stream.close()