google-api python access through refresh token

I couldn't find a single python example on the web that explain how to get an access token to connect to google APIs using a pre-created refresh token.

Note that this is a sample code I wrote so it is far from being production ready. Don't forget to add values to REFRESH_TOKEN, CLIENT_ID, CLIENT_SECRET, REDIRECT_URI and OAUTH_SCOPE variables based on your app settings.

feel free to comment on the code below, Specially on my novice python coding skills.


#!/usr/bin/python

import httplib2
import pprint

from apiclient.discovery import build
from apiclient.http import MediaFileUpload
from oauth2client.client import OAuth2WebServerFlow
from oauth2client.client import OAuth2Credentials
from oauth2client import GOOGLE_AUTH_URI
from oauth2client import GOOGLE_REVOKE_URI
from oauth2client import GOOGLE_TOKEN_URI

#Refresh token
REFRESH_TOKEN = ""

# Copy your credentials from the console
CLIENT_ID = ''
CLIENT_SECRET = ''

## Check https://developers.google.com/drive/scopes for all available scopes
OAUTH_SCOPE = ['https://www.googleapis.com/auth/drive','http://localhost:5001/storage/getGDriveAuth']

## Redirect URI for installed apps
REDIRECT_URI = ''


credentials = OAuth2Credentials(None, CLIENT_ID,
                               CLIENT_SECRET, REFRESH_TOKEN, None,
                               GOOGLE_TOKEN_URI, None,
                               revoke_uri=GOOGLE_REVOKE_URI,
                               id_token=None,
                               token_response=None)

# Create an httplib2.Http object and authorize it with our credentials
http = httplib2.Http()
http = credentials.authorize(http)

drive_service = build('drive', 'v2', http=http)
file = drive_service.files().list().execute()

pprint.pprint(file)
exit();