oauth2.py

#!/usr/bin/env python

import requests
import urllib
import time
import webbrowser
import json

AUTH_JSON = {
    "installed": {
        "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
        "auth_uri": "https://accounts.google.com/o/oauth2/auth",
        "client_email": "",
        "client_id": "ABCDEF.apps.googleusercontent.com",
        "client_secret": "some_secret_key",
        "client_x509_cert_url": "",
        "redirect_uris": [
            "urn:ietf:wg:oauth:2.0:oob",
            "oob"
        ],
        "token_uri": "https://accounts.google.com/o/oauth2/token"
    }
}

AUTH_URI = AUTH_JSON["installed"]["auth_uri"]
TOKEN_URI = AUTH_JSON["installed"]["token_uri"]
CLIENT_ID = AUTH_JSON["installed"]["client_id"]
CLIENT_SECRET = AUTH_JSON["installed"]["client_secret"]
REDIRECT_URI = AUTH_JSON["installed"]["redirect_uris"][0]

link_payload = {
    "client_id": CLIENT_ID,
    "redirect_uri": REDIRECT_URI,
    "scope": "openid https://www.googleapis.com/auth/plus.login",
    "response_type": "code",
}
link_query = urllib.urlencode(link_payload)
link_url = "%s?%s" % (AUTH_URI, link_query)

webbrowser.open(link_url)
time.sleep(0.5)
auth_code = raw_input("Code:")


#Refreshed Token

refresh_payload = {
    "code": auth_code,
    "client_id": CLIENT_ID,
    "client_secret": CLIENT_SECRET,
    "redirect_uri": REDIRECT_URI,
    "grant_type": "authorization_code",
}
req = requests.post(TOKEN_URI, data=refresh_payload)
refresh_token_data = json.loads(req.content)

REFRESH_TOKEN = refresh_token_data["refresh_token"]
print "Refreshed token:", REFRESH_TOKEN

final_token_payload = {
    "client_id": CLIENT_ID,
    "client_secret": CLIENT_SECRET,
    "refresh_token": REFRESH_TOKEN,
    "grant_type": "refresh_token",
}

req = requests.post(TOKEN_URI, data=final_token_payload)
final_token_data = json.loads(req.content)
print final_token_data

app_req = requests.get(
    "http://my-app.appspot.com/api/",
    headers={
        "Content-Type": "application/x-www-form-urlencoded",
        "Authorization": "Bearer %s" % final_token_data["access_token"],
    }
)

print app_req.content