python - 值错误 : Client secrets must be for a web or installed app

Question

我正在 Python Quickstart 下运行 quickstart.py 示例代码我收到以下错误:

ValueError: Client secrets must be for a web or installed app.

我创建了一个具有项目所有者权限的 credentials.json 文件。

错误发生在下面的一段代码中:

if os.path.exists('token.pickle'):
    with open('token.pickle', 'rb') as token:
        creds = pickle.load(token)
# If there are no (valid) credentials available, let the user log in.
if not creds or not creds.valid:
    if creds and creds.expired and creds.refresh_token:
        creds.refresh(Request())
    else:
        flow = InstalledAppFlow.from_client_secrets_file('credentials.json', SCOPES)
        creds = flow.run_local_server()
    # Save the credentials for the next run
    with open('token.pickle', 'wb') as token:
        pickle.dump(creds, token)

我还注意到没有创建 token.pickle 文件。这是错误输出:

  File "updateSlidev01.py", line 51, in <module>
    main()
  File "updateSlidev01.py", line 31, in main
    flow = InstalledAppFlow.from_client_secrets_file('credentials.json', SCOPES)
  File "/Library/Python/2.7/site-packages/google_auth_oauthlib/flow.py", line 174, in from_client_secrets_file
    return cls.from_client_config(client_config, scopes=scopes, **kwargs)
  File "/Library/Python/2.7/site-packages/google_auth_oauthlib/flow.py", line 147, in from_client_config
    'Client secrets must be for a web or installed app.')
ValueError: Client secrets must be for a web or installed app.

Answer 1

对于任何来这里的人，因为他们想通过服务帐户而不是这个 Oauth2 客户端 ID 实际连接到 GCP 日历 API，请在原始示例中创建 creds 对象，如下所示:

from google.oauth2 import service_account

SCOPES = ['https://www.googleapis.com/auth/calendar.readonly']
SERVICE_ACCOUNT_FILE = '/path/to/service.json'

credentials = service_account.Credentials.from_service_account_file(
        SERVICE_ACCOUNT_FILE, scopes=SCOPES)

假设服务帐户配置了正确的访问权限，这将在不提示用户确认的情况下访问日历。