app/extensions.py

from flask_pymongo import PyMongo
from flask_bcrypt import Bcrypt
from flask_jwt_extended import JWTManager
from flask_cors import CORS
from flask_session import Session
from flask_oauthlib.contrib.client import OAuth

mongo = PyMongo()
bcrypt = Bcrypt()
jwt = JWTManager()
cors = CORS()
session = Session()
oauth = OAuth()