上記について、下記のURLの通りにやっているのですが、
https://developers.google.com/analytics/devguides/reporting/core/v3/quickstart/service-py

下記のエラーが出ます。解決方法をご存知のかた、宜しくお願い致します。

C:\Users\Documents>python HelloAnalytics.py
Traceback (most recent call last):
  File "HelloAnalytics.py", line 5, in <module>
    from apiclient.discovery import build
  File "C:\Users\AppData\Local\Continuum\Anaconda3\envs\tensorenv\lib\site-packages\apiclient\__init__.py", line 16, in <module>
    from googleapiclient import channel
  File "C:\Users\AppData\Local\Continuum\Anaconda3\envs\tensorenv\lib\site-packages\googleapiclient\channel.py", line 62, in <module>
    from googleapiclient import errors
  File "C:\Users\AppData\Local\Continuum\Anaconda3\envs\tensorenv\lib\site-packages\googleapiclient\errors.py", line 25, in <module>
    from oauth2client import util
ImportError: cannot import name 'util'

追記

pip show google-api-clientの結果：

Name: google-api-python-client
Version: 1.3.2
Summary: Google API Client Library for Python
Home-page: http~
Author: Google Inc.
Author-email: UNKNOWN
License: Apache 2.0
Location: c:\users\appdata\local\continuum\anaconda3\lib\site-packages
Requires: uritemplate, httplib2, oauth2client

pip show oauth2clientの結果：

Name: oauth2client
Version: 4.0.0
Summary: OAuth 2.0 client library
Home-page: http~
Author: Google Inc.
Author-email: UNKNOWN
License: Apache 2.0
Location: c:\users\appdata\local\continuum\anaconda3\lib\site-packages
Requires: pyasn1, six, rsa, httplib2, pyasn1-modules