old_contents: #!flask/bin/python
  from flask import Flask
  from flask.ext.sqlalchemy import SQLAlchemy
  
  app = Flask(__name__)
  app.config.from_object('config')
  db = SQLAlchemy(app)
  
  from app import views, models
  
new_contents: #!flask/bin/python
  from flask import Flask
  from flask_sqlalchemy import SQLAlchemy
  
  app = Flask(__name__)
  app.config.from_object('config')
  db = SQLAlchemy(app)
  
  from app import views, models
  
subject: Update to flask_sqlalchemy to use python 3 import