text: from flask import Flask
  from config import config_options
  from flask_bootstrap import Bootstrap
  from flask_sqlalchemy import SQLAlchemy
  from flask_login import LoginManager
  from flask_uploads import UploadSet, configure_uploads, IMAGES
  from flask_mail import Mail
  from flask_simplemde import SimpleMDE
  
  
  
  
  login_manager = LoginManager()
  login_manager.session_protection = 'strong'
  login_manager.login_view = 'auth.login'
  
  
  bootstrap = Bootstrap()
  db=SQLAlchemy()
  mail=Mail()
  simple = SimpleMDE()
  photos = UploadSet('photos', IMAGES)
  
  def create_app(config_name):
  
      #Initializing the application
      app = Flask(__name__)
  
      #setting up configurations
      app.config.from_object(config_options[config_name])
  
      # configure UploadSet
      configure_uploads(app, photos)
  
      #Initializing flask extensions
      bootstrap.init_app(app)
      db.init_app(app)
      login_manager.init_app(app)
      mail.init_app(app)
      simple.init_app(app)
  
  
      # Registering the main blueprint
      from .main import main as main_blueprint
      app.register_blueprint(main_blueprint)
  
      #Registering thr auth blueprint
      from .auth import auth as auth_blueprint
      app.register_blueprint(auth_blueprint, url_prefix='/authenticate')
  
      # setting config
      from .request import configure_request
      configure_request(app)
  
      return app
  