gistfile1.py

#!/usr/bin/env python

import httplib2
from oauth2client.client import flow_from_clientsecrets
from oauth2client.file import Storage
from oauth2client.tools import run

from apiclient.discovery import build

CLIENT_SECRETS = 'client_secrets.json'
OAUTH2_STORAGE = 'oauth2.dat'
GCE_SCOPE = 'https://localhost:5000'
API_VERSION = 'v1beta15'
GCE_URL = 'https://localhost:5000' 

def main():

  # Perform OAuth 2.0 authorization.
  flow = flow_from_clientsecrets(CLIENT_SECRETS, scope=GCE_SCOPE)
  storage = Storage(OAUTH2_STORAGE)
  credentials = storage.get()

  if credentials is None or credentials.invalid:
    credentials = run(flow, storage)
  http = httplib2.Http(disable_ssl_certificate_validation=True)
  auth_http = credentials.authorize(http)

  gce_service = build('compute', API_VERSION)

if __name__ == '__main__':
  main()