如何将凭据添加到 Google Text to Speech API？

Question

我是 Python 新手。我想使用 Google 文本到语音转换 API，因为我在下面的代码中使用了它，但由于错误，我无法访问该 API。这是代码，

def synthesize_text(text):
    """Synthesizes speech from the input string of text."""
    from google.cloud import texttospeech
    client = texttospeech.TextToSpeechClient()

    input_text = texttospeech.types.SynthesisInput(text=text)

    # Note: the voice can also be specified by name.
    # Names of voices can be retrieved with client.list_voices().
    voice = texttospeech.types.VoiceSelectionParams(
        language_code='en-US',
        ssml_gender=texttospeech.enums.SsmlVoiceGender.FEMALE)

    audio_config = texttospeech.types.AudioConfig(
        audio_encoding=texttospeech.enums.AudioEncoding.MP3)

    response = client.synthesize_speech(input_text, voice, audio_config)

    # The response's audio_content is binary.
    with open('output.mp3', 'wb') as out:
        out.write(response.audio_content)
        print('Audio content written to file "output.mp3"')

这是错误，

google.auth.exceptions.DefaultCredentialsError: Could not automatically determine credentials. Please set GOOGLE_APPLICATION_CREDENTIALS or
explicitly create credential and re-run the application. For more
information, please see
https://developers.google.com/accounts/docs/application-default-credentials.

我已经有凭证 JSON 文件，但我无法配置代码来验证我的请求。请帮忙！

Answer 1

你可以试试这个代码：

from google.oauth2 import service_account

credentials = service_account.Credentials.from_service_account_file('yourkey.json')

client = texttospeech.TextToSpeechClient(credentials=credentials)