2

我尝试运行这个使用谷歌云的代码。

import signal
import sys

from google.cloud import language, exceptions

# create a Google Cloud Natural Languague API Python client
client = language.LanguageServiceClient()

但它给出了以下错误消息:

  Traceback (most recent call last):
  File "analyse-comments.py", line 7, in <module>
    client = language.LanguageServiceClient()
  File "C:\Python27\lib\site-packages\google\cloud\language_v1\gapic\language_service_client.py", line 92, in __init__
    scopes=self._DEFAULT_SCOPES)
  File "C:\Python27\lib\site-packages\google\api_core\grpc_helpers.py", line 132, in create_channel
    credentials, _ = google.auth.default(scopes=scopes)
  File "C:\Python27\lib\site-packages\google\auth\_default.py", line 283, in default
    raise exceptions.DefaultCredentialsError(_HELP_MESSAGE)
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.

第 7 行是这部分代码

 client = language.LanguageServiceClient()

我已经 pip install google 和 cloud 了。我有谷歌的解决方案,但没有一个解决方案适合我的情况需要解决的问题。

4

1 回答 1

2

您共享的错误清楚地表明凭据存在问题:

google.auth.exceptions.DefaultCredentialsError: Could not automatically determine credentials. Please set GOOGLE_APPLICATION_CREDENTIALS or
explicitly create credential and re-run the application.

它邀请您访问设置身份验证的文档页面,了解有关此主题的更多信息:

For more information, please see https://developers.google.com/accounts/docs/application-default-credentials.

这里的具体问题是您正在使用的客户端库 ( google.cloud.language) 正在尝试直接在环境变量中查找凭据以使用您的 GCP 帐户进行身份验证,GOOGLE_APPLICATION_CREDENTIALS但无法找到它们。为了解决这个问题,你应该先从控制台的Service Accounts页面下载你的Service Account的JSON key (点击右边的三个点,新建一个JSON key),存储到本地,然后点使用它GOOGLE_APPLICATION_CREDENTIALS,如文档中所述,具体取决于您的操作系统发行版。

使用 JSON 密钥的正确目录路径填充此环境变量后,您正在使用的客户端库将能够正确进行身份验证,并且错误应该消失。

此外,如果该过程对您不起作用(我看不出有任何不适用的原因),您可以将凭证文件显式传递给LanguageServiceClient()您正在实例化的对象,如下所示,如自然语言的 API 参考中所述接口

from google.cloud import language
from google.oauth2 import service_account

creds = service_account.Credentials.from_service_account_file('path/key.json')
client = language.LanguageServiceClient(
    credentials=creds,
)
于 2018-02-27T16:49:26.417 回答