old_contents: import os
  
  from flask import Flask
  
  
  def create_app(test_config=None):
      # create and configure the app
      app = Flask(__name__, instance_relative_config=True)
      app.config.from_mapping(
          SECRET_KEY='dev',
          DATABASE=os.path.join(app.instance_path, 'flaskr.sqlite'),
      )
  
      if test_config is None:
          # load the instance config, if it exists, when not testing
          app.config.from_pyfile('config.py', silent=True)
      else:
          # load the test config if passed in
          app.config.from_mapping(test_config)
  
      # ensure the instance folder exists
      try:
          os.makedirs(app.instance_path)
      except OSError:
          pass
  
      # a simple page that says hello
      @app.route('/hello')
      def hello():
          return 'Hello, World!'
  
      from datanator.rest import search
      app.register_blueprint(search.bp)
      app.register_blueprint(search.bp_r)
      
      return app
  
  if __name__ == '__main__':
      create_app().run(debug=True, host='0.0.0.0')
new_contents: import os
  
  from flask import Flask
  from flask_cors import CORS
  
  
  def create_app(test_config=None):
      # create and configure the app
      app = Flask(__name__, instance_relative_config=True)
      CORS(app)
      app.config.from_mapping(
          SECRET_KEY='dev',
          DATABASE=os.path.join(app.instance_path, 'flaskr.sqlite'),
      )
  
      if test_config is None:
          # load the instance config, if it exists, when not testing
          app.config.from_pyfile('config.py', silent=True)
      else:
          # load the test config if passed in
          app.config.from_mapping(test_config)
  
      # ensure the instance folder exists
      try:
          os.makedirs(app.instance_path)
      except OSError:
          pass
  
      # a simple page that says hello
      @app.route('/hello')
      def hello():
          return 'Hello, World!'
  
      from datanator.rest import search
      app.register_blueprint(search.bp)
      app.register_blueprint(search.bp_r)
      
      return app
  
  if __name__ == '__main__':
      create_app().run(debug=True, host='0.0.0.0')
subject: allow cors