old_contents: from flask import Flask
  from flask.ext.babel import Babel
  from flask.ext.assets import Environment
  
  
  def create_app():
      app = Flask(__name__, static_folder='public')
      babel = Babel(app)
      assets = Environment(app)
      return app
  
  app = create_app()
  
  import skylines.views
  
new_contents: from flask import Flask
  from flask.ext.babel import Babel
  from flask.ext.assets import Environment
  from webassets.loaders import PythonLoader
  
  
  def create_app():
      app = Flask(__name__, static_folder='public')
      babel = Babel(app)
  
      bundles = PythonLoader('skylines.assets.bundles').load_bundles()
      assets = Environment(app)
      assets.register(bundles)
  
      return app
  
  app = create_app()
  
  import skylines.views
  
subject: Load asset bundles into webassets environment