Python 3.6.4 : Using python client with blogger API .

I used a new project into console cloud google.
I used the google-api-python-client from here with OAuth service.
You need to create a project and add the blogger API to use it.
For credentials, I used OAuth with the JSON file from google.
This is the source code:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import print_function

__author__ = 'Catalin George Festila ( catafest , mythcat )'

import sys

from oauth2client import client
from googleapiclient import sample_tools


def main(argv):
  # Authenticate and construct service.
  service, flags = sample_tools.init(
      argv, 'blogger', 'v3', __doc__, __file__,
      scope='https://www.googleapis.com/auth/blogger')

  try:

      users = service.users()

      # Retrieve this user's profile information
      thisuser = users.get(userId='self').execute()
      print('This user\'s display name is: %s' % thisuser['displayName'])

      blogs = service.blogs()

      # Retrieve the list of Blogs this user has write privileges on
      thisusersblogs = blogs.listByUser(userId='self').execute()
      for blog in thisusersblogs['items']:
        print('The blog named \'%s\' is at: %s' % (blog['name'], blog['url']))

      posts = service.posts()

      # List the posts for each blog this user has
      for blog in thisusersblogs['items']:
        print('The posts for %s:' % blog['name'])
        request = posts.list(blogId=blog['id'])
        while request != None:
          posts_doc = request.execute()
          if 'items' in posts_doc and not (posts_doc['items'] is None):
            for post in posts_doc['items']:
              print('  %s (%s)' % (post['title'], post['url']))
          request = posts.list_next(request, posts_doc)

  except client.AccessTokenRefreshError:
    print ('The credentials have been revoked or expired, please re-run'
      'the application to re-authorize')

if __name__ == '__main__':
  main(sys.argv)

The content of the folder project named google_api_python.

c:\Python364\google_api_python>dir
06/24/2018  08:27 PM             1,096 blogger.dat
06/24/2018  07:49 PM             2,599 blogger.py
06/24/2018  08:24 PM               309 client_secrets.json
06/24/2018  08:26 PM                76 debug.log
               4 File(s)          4,080 bytes
               2 Dir(s)  201,382,006,784 bytes free

You need to add the client_id and client_secret from google project into file client_secrets.json.
Run the python script:

c:\Python364\google_api_python>python.exe blogger.py

The google will ask you about the authentification and will run the script:

Google show us all the infos about this project into dashboard: