old_contents: from flask.ext.sqlalchemy import SQLAlchemy
  from flock import app
  
  db = SQLAlchemy(app)
  
  class User(db.Model):
  	id = db.Column(db.Integer, primary_key=True)
  
  	def __init__(self):
  
new_contents: from flask.ext.sqlalchemy import SQLAlchemy
  from flock import app
  
  db = SQLAlchemy(app)
  
  class User(db.Model):
  	id = db.Column(db.Integer, primary_key=True)
  
  	def __init__(self):
  		pass
  
subject: Update user.py