from oauth2client.service_account import ServiceAccountCredentials : cannot import name 'opentype'

Question

I use python 3.6.0. I want to play with the Google Drive API. When I import oauth2client.service_account I get this error :

Traceback (most recent call last):
  File "test.py", line 3, in <module>
    from oauth2client.service_account import _ServiceAccountCredentials
  File "C:\Users\aaron\Anaconda3\lib\site-packages\oauth2client\service_account.py", line 26, in <module>
    from oauth2client import crypt
  File "C:\Users\aaron\Anaconda3\lib\site-packages\oauth2client\crypt.py", line 23, in <module>
    from oauth2client import _pure_python_crypt
  File "C:\Users\aaron\Anaconda3\lib\site-packages\oauth2client\_pure_python_crypt.py", line 24, in <module>
    from pyasn1_modules.rfc2459 import Certificate
  File "C:\Users\aaron\Anaconda3\lib\site-packages\pyasn1_modules\rfc2459.py", line 20, in <module>
    from pyasn1.type import opentype
ImportError: cannot import name 'opentype'

Answer 1

Consider upgrading your google-auth module

pip install --upgrade google-auth-oauthlib

and also the pyasn1_module, which is reponsible for implementation of ASN.1 types and codecs as a Python package

pip install --upgrade pyasn1-modules

UPDATE Working solution: Force install your modules

pip install -U -I pyasn1 pyasn1-modules