old_contents: """ models module contains the App Engine DataStore models """
  from google.appengine.ext import db
  
  class Users(db.Model):
      user_id = db.StringProperty()
      email = db.StringProperty()
      pt_username = db.StringProperty()
      pt_emails = db.StringListProperty()
      pt_token = db.StringProperty()
      signatures = db.ListProperty(db.Text)
  
  class Comments(db.Model):
      user_id = db.StringProperty()
      projectId = db.StringProperty()
      storyId = db.StringProperty()
      comment = db.TextProperty()
  
new_contents: """ models module contains the App Engine DataStore models """
  from google.appengine.ext import db
  
  class Users(db.Model):
      user_id = db.StringProperty()
      email = db.StringProperty()
      pt_username = db.StringProperty()
      pt_emails = db.StringListProperty()
      pt_token = db.StringProperty()
      signatures = db.ListProperty(db.Text)
  
  class Comments(db.Model):
      user_id = db.StringProperty()
      project_id = db.StringProperty()
      story_id = db.StringProperty()
      comment = db.TextProperty()
  
subject: change model attribues to standard variable names