我编写了一个应用程序，它使用正式记录的所有客户端/sdks。
credentials = GoogleCredentials \
.get_application_default() \
.create_scoped('https://www.googleapis.com/auth/drive')
drive = discovery.build(
'drive',
'v3',
http=self.credentials.authorize(Http())
)
drive.files() \
.get(fileId=file_id) \
.execute()
它使用从面板生成的服务帐户在本地完美运行，但是当我部署应用程序时，AppEngine 柔性环境中的服务帐户遇到问题。
17:15:04.000 /env/lib/python3.4/site-packages/oauth2client/contrib/gce.py:99: UserWarning: You have requested explicit scopes to be used with a GCE service account.
17:15:04.000 Using this argument will have no effect on the actual scopes for tokens
17:15:04.000 requested. These scopes are set at VM instance creation time and
17:15:04.000 can't be overridden in the request.
17:15:04.000
17:15:04.000 warnings.warn(_SCOPES_WARNING)
17:15:04.000 INFO:googleapiclient.discovery:URL being requested: GET https://www.googleapis.com/discovery/v1/apis/drive/v3/rest
17:15:04.000 INFO:oauth2client.client:Attempting refresh to obtain initial access_token
17:15:04.000 INFO:googleapiclient.discovery:URL being requested: GET https://www.googleapis.com/drive/v3/files/0B0Kn....M1pBNFE?alt=json
17:15:04.000 ERROR:root:Failed to retrieve file 0B0K....M1pBNFE. Is it shared with me? project-id@appspot.gserviceaccount.com
17:15:04.000 Traceback (most recent call last):
17:15:04.000 File "/home/vmagent/app/script.py", line 45, in get
17:15:04.000 .execute()
17:15:04.000 File "/env/lib/python3.4/site-packages/oauth2client/util.py", line 135, in positional_wrapper
17:15:04.000 return wrapped(*args, **kwargs)
17:15:04.000 File "/env/lib/python3.4/site-packages/googleapiclient/http.py", line 760, in execute
17:15:04.000 raise HttpError(resp, content, uri=self.uri)
17:15:04.000 googleapiclient.errors.HttpError: <HttpError 403 when requesting https://www.googleapis.com/drive/v3/files/0B0Kn....M1pBNFE?alt=json returned "Insufficient Permission">
我已经检查了权限，它们都已设置。问题可能是由于尝试创建范围凭据时出现的“使用此参数将无效...”消息。