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我按照Google登錄Android版文檔（https://developers.google.com/identity/sign-in/android/backend-auth）中的說明操作，試圖在我的Python代碼中實現令牌驗證。ImportError：沒有名爲oauth2client的模塊
我正在開發本地主機。出於某種原因，當我嘗試這個進口from oauth2client import client, crypt到我的谷歌應用程序引擎的後端我得到這個錯誤，我得到這個錯誤：
ImportError: No module named oauth2client.client`
我已經安裝的oauth2使用sudo PIP安裝--upgrade谷歌API - python （https://developers.google.com/api-client-library/python/start/installation）。安裝日誌顯示：
Requirement already up-to-date: google-api-python-client in /usr/local/lib/python2.7/dist-packages/google_api_python_client-1.5.0-py2.7.egg
Requirement already up-to-date: httplib2>=0.8,<1 in /usr/local/lib/python2.7/dist-packages (from google-api-python-client)
Downloading/unpacking oauth2client>=2.0.0,<3 from https://pypi.python.org/packages/source/o/oauth2client/oauth2client-2.0.0.post1.tar.gz#md5=6309e12fe2bc0f038708e2c9ec4b1f69 (from google-api-python-client)
Downloading oauth2client-2.0.0.post1.tar.gz (66kB): 66kB downloaded
Running setup.py (path:/tmp/pip_build_root/oauth2client/setup.py) egg_info for package oauth2client
warning: no previously-included files matching '*' found under directory 'tests'
Requirement already up-to-date: six>=1.6.1,<2 in /usr/local/lib/python2.7/dist-packages (from google-api-python-client)
Requirement already up-to-date: uritemplate>=0.6,<1 in /usr/local/lib/python2.7/dist-packages (from google-api-python-client)
Requirement already up-to-date: pyasn1>=0.1.7 in /usr/local/lib/python2.7/dist-packages (from oauth2client>=2.0.0,<3->google-api-python-client)
Requirement already up-to-date: pyasn1-modules>=0.0.5 in /usr/local/lib/python2.7/dist-packages (from oauth2client>=2.0.0,<3->google-api-python-client)
Requirement already up-to-date: rsa>=3.1.4 in /usr/local/lib/python2.7/dist-packages (from oauth2client>=2.0.0,<3->google-api-python-client)
Requirement already up-to-date: simplejson>=2.5.0 in /usr/local/lib/python2.7/dist-packages (from uritemplate>=0.6,<1->google-api-python-client)
Installing collected packages: oauth2client
Found existing installation: oauth2client 2.0.0-post1
Uninstalling oauth2client:
Successfully uninstalled oauth2client
Running setup.py install for oauth2client
warning: no previously-included files matching '*' found under directory 'tests'
Successfully installed oauth2client
我看到有人提供了一個答案，但我不知道如何做到這一點的符號鏈接此處介紹：該Google app engine(python) ImportError: No module named oauth2 in google app engine
我想這有什麼與路徑有關，但我不知道如何設置，以便oauth2client在全局安裝。我在VM上運行Ubuntu 14.04 LTS。
任何幫助，將不勝感激。