text: # coding:utf-8
  """
  @author:ww
  @time:2018/3/8
  @version:0.1
  """
  from django.contrib.auth.models import User
  from django.db.models.signals import post_save, pre_save
  from django.dispatch import receiver
  
  from StudentAnswerApp import models
  
  
  
  
  