old_contents: from flask import Flask
  from flask_sqlalchemy import SQLAlchemy
  from flask_login import LoginManager
  from flask_oauthlib.client import OAuth
  
  from config import config
  
  db = SQLAlchemy()
  lm = LoginManager()
  oauth = OAuth()
  
  
  def create_app(config_name):
      app = Flask(__name__)
      app.config.from_object(config[config_name])
  
      db.init_app(app)
      lm.init_app(app)
      oauth.init_app(app)
  
      from app.views import views
      app.register_blueprint(views)
  
      return app
new_contents: from flask import Flask
  from flask_sqlalchemy import SQLAlchemy
  from flask_login import LoginManager
  from flask_oauthlib.client import OAuth
  
  from config import config
  
  db = SQLAlchemy()
  oauth = OAuth()
  lm = LoginManager()
  lm.login_view = "views.login"
  
  from app.models import User
  
  
  @lm.user_loader
  def load_user(id):
      return User.query.get(int(id))
  
  def create_app(config_name):
      app = Flask(__name__)
      app.config.from_object(config[config_name])
  
      db.init_app(app)
      lm.init_app(app)
      oauth.init_app(app)
  
      from app.views import views
      app.register_blueprint(views)
  
      return app
subject: Set user loader and login view