Yelp APIv3 Fusion - oAuth 2.0 implementation

Yelp API oAuth 2.0 Python.py

import re
import requests
from oauthlib.oauth2 import BackendApplicationClient
from requests_oauthlib import OAuth2Session

#Fill app key details from Yelp
client_id = '<client id here>'
client_secret = '<client secret here>'

#Authenticate and get access token
client = BackendApplicationClient(client_id=client_id)
yelp = OAuth2Session(client=client)
token = yelp.fetch_token(token_url='https://api.yelp.com/oauth2/token', client_id=client_id, client_secret=client_secret)

#Construct custom Authentication header
#Can use a better way to access the token string from returned unicode JSON. This is quick and dirty
tokenstring = str(token)
accesstok = re.findall(r"'access_token': u'(.*?)', ",tokenstring)
authhead = "Bearer " + accesstok[0]
head = {'Authorization': authhead}

#Call needed yelp endpoint with custom header using requests module
r = requests.get("https://api.yelp.com/v3/businesses/north-india-restaurant-san-francisco/reviews", headers= head)
print r.text

Can use a better way to access the token string from returned unicode JSON. Suggestions welcome!