"TypeError: cannot instantiate ctype 'EVP_MD_CTX' of unknown size" while trying to build google prediction api

Question

Below is the code

import httplib2, argparse, os, sys, json
from oauth2client import tools, file, client
from oauth2client.service_account import ServiceAccountCredentials
from googleapiclient import discovery
from googleapiclient.errors import HttpError

scope = ['https://www.googleapis.com/auth/prediction','https://www.googleapis.com/auth/devstorage.read_only']

def get_api(api, scope, service_account=True):
     storage = file.Storage('oAuth2.json')
     creds = storage.get()

     if creds is None or creds.invalid:
        creds = ServiceAccountCredentials.from_json_keyfile_name('service_account.json',
                                                             scopes=scope)
        storage.put(creds)

     http = creds.authorize(httplib2.Http())
     return discovery.build(api, 'v1.6', http=http)

api = get_prediction_api('prediction')

Below is the error

TypeError: cannot instantiate ctype 'EVP_MD_CTX' of unknown size

Based on this blog

Using this google-api-python-client

Answer 1

The google-api-python-client that I installed (link above) only works with python2. As of today, it doesn't work with python2 inside of conda env, only outside of conda env, and doesn't work with python 3.5.

Answer 2

I found this post oauth2client relating the problem, in my case the problem was solved updating to latest version of pyOpenSSL, 16.2.0 at the time of writing.

Answer 3

I don't have the points to upvote but Chemary's answer worked for me. I am using python 3.5. I faced the same issue and it got resolved when I installed pyOpenSSL.

pip install --upgrade pyOpenSSL