new_contents: 
  from google.appengine.api import users
  from google.appengine.ext import ndb
  
  class preperingSchdule(ndb.Model):
  	Date = ndb.KeyProperty(kind = String)
  	ShiftType = ndb.StringProperty()
  	ShiftHead = ndb.StringProperty()
  	SimpleNurse = ndb.StringProperty()
  	Standby = ndb.StringProperty()
  
  	
  	
  	
  	
  	
  	
  	
  	
subject: add preperSchdule