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python - oauth2client.client.ApplicationDefaultCredentialsError

问题描述

我正在尝试在GoogleVisionTutorials中运行代码。我已正确运行以下终端命令：

export GOOGLE_APPLICATION_CREDENTIALS=filename.json

但是，我收到以下凭据错误：

Traceback (most recent call last):

File "camera-vision-logo.py", line 52, in <module>
    main()
  File "camera-vision-logo.py", line 26, in main
    credentials = GoogleCredentials.get_application_default()
  File "/usr/local/lib/python2.7/dist-packages/oauth2client/client.py", line 1271, in get_application_default
    return GoogleCredentials._get_implicit_credentials()
  File "/usr/local/lib/python2.7/dist-packages/oauth2client/client.py", line 1256, in _get_implicit_credentials
    credentials = checker()
  File "/usr/local/lib/python2.7/dist-packages/oauth2client/client.py", line 1207, in _implicit_credentials_from_files
    credentials_filename = _get_environment_variable_file()
  File "/usr/local/lib/python2.7/dist-packages/oauth2client/client.py", line 1355, in _get_environment_variable_file
    ' environment variable) does not exist!')
oauth2client.client.ApplicationDefaultCredentialsError: File vision2-234508-f73783d1ef52.json (pointed by GOOGLE_APPLICATION_CREDENTIALS environment variable) does not exist!

标签： pythonlinuxraspberry-pigoogle-cloud-vision

解决方案

很可能您正在凭据文件所在的不同目录中执行代码。

使用绝对路径来引用它：

export GOOGLE_APPLICATION_CREDENTIALS=/path/to/file/filename.json

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