AttributeError: module 'lib' has no attribute 'X509_V_FLAG_CB_ISSUER_CHECK'

Recently I had to reinstall Python due to a corrupt executable. This made one of our Python scripts bomb with the following error:

AttributeError: module 'lib' has no attribute 'X509_V_FLAG_CB_ISSUER_CHECK'

The line of code that caused it to bomb was:

from apiclient.discovery import build

I tried pip uninstalling and pip upgrading the google-api-python-client, but I can’t seem to find any information on this particular error.

For what it is worth, I am trying to pull Google Analytics information down via an API call.

Here is an output of the command prompt error:

  File "C:\Analytics\Puritan_GoogleAnalytics\Google_Conversions\mcfTest.py", line 1, in <module>
    from apiclient.discovery import build
  File "C:\ProgramData\Anaconda3\lib\site-packages\apiclient\__init__.py", line 3, in <module>
    from googleapiclient import channel, discovery, errors, http, mimeparse, model
  File "C:\ProgramData\Anaconda3\lib\site-packages\googleapiclient\discovery.py", line 57, in <module>
    from googleapiclient import _auth, mimeparse
  File "C:\ProgramData\Anaconda3\lib\site-packages\googleapiclient\_auth.py", line 34, in <module>
    import oauth2client.client
  File "C:\ProgramData\Anaconda3\lib\site-packages\oauth2client\client.py", line 45, in <module>
    from oauth2client import crypt
  File "C:\ProgramData\Anaconda3\lib\site-packages\oauth2client\crypt.py", line 45, in <module>
    from oauth2client import _openssl_crypt
  File "C:\ProgramData\Anaconda3\lib\site-packages\oauth2client\_openssl_crypt.py", line 16, in <module>
    from OpenSSL import crypto
  File "C:\ProgramData\Anaconda3\lib\site-packages\OpenSSL\__init__.py", line 8, in <module>
    from OpenSSL import crypto, SSL
  File "C:\ProgramData\Anaconda3\lib\site-packages\OpenSSL\crypto.py", line 1517, in <module>
    class X509StoreFlags(object):
  File "C:\ProgramData\Anaconda3\lib\site-packages\OpenSSL\crypto.py", line 1537, in X509StoreFlags
    CB_ISSUER_CHECK = _lib.X509_V_FLAG_CB_ISSUER_CHECK
AttributeError: module 'lib' has no attribute 'X509_V_FLAG_CB_ISSUER_CHECK'

python3 -m pip install pip --upgrade
pip install pyopenssl --upgrade