old_contents: from flask import Flask, render_template
  from flask_bootstrap import Bootstrap
  from flask_login import LoginManager
  from flask_moment import Moment
  from flask_sqlalchemy import SQLAlchemy
  from flask_debugtoolbar import DebugToolbarExtension
  from config import config
  
  bootstrap = Bootstrap()
  moment = Moment()
  db = SQLAlchemy()
  login_manager = LoginManager()
  login_manager.session_protection = 'strong'
  login_manager.login_view = 'main.login'
  toolbar = DebugToolbarExtension()
  
  
  def create_app(config_name):
      app = Flask(__name__)
      app.config.from_object(config[config_name])
      config[config_name].init_app(app)
      bootstrap.init_app(app)
      moment.init_app(app)
      db.init_app(app)
      login_manager.init_app(app)
      toolbar.init_app(app)
      from .main import main as main_blueprint
      app.register_blueprint(main_blueprint)
      from .auth import auth as auth_blueprint
      app.register_blueprint(auth_blueprint, url_prefix='/auth')
      app.register_blueprint(auth_blueprint, url_prefix='/qrcode')
      from .api_1_0 import api as api_1_0_blueprint
      app.register_blueprint(api_1_0_blueprint, url_prefix='/v1')
  
      return app
  
new_contents: from flask import Flask, render_template
  from flask_bootstrap import Bootstrap
  from flask_login import LoginManager
  from flask_moment import Moment
  from flask_sqlalchemy import SQLAlchemy
  
  from config import config
  
  bootstrap = Bootstrap()
  moment = Moment()
  db = SQLAlchemy()
  login_manager = LoginManager()
  login_manager.session_protection = 'strong'
  login_manager.login_view = 'main.login'
  
  
  def create_app(config_name):
      app = Flask(__name__)
      app.config.from_object(config[config_name])
      config[config_name].init_app(app)
      bootstrap.init_app(app)
      moment.init_app(app)
      db.init_app(app)
      login_manager.init_app(app)
      from .main import main as main_blueprint
      app.register_blueprint(main_blueprint)
      from .auth import auth as auth_blueprint
      app.register_blueprint(auth_blueprint, url_prefix='/auth')
      app.register_blueprint(auth_blueprint, url_prefix='/qrcode')
      from .api_1_0 import api as api_1_0_blueprint
      app.register_blueprint(api_1_0_blueprint, url_prefix='/v1')
  
      return app
  
subject: remove flask_debugtoolbar