old_contents: from django.shortcuts import render
  
  # Create your views here.
  
new_contents: #-*- coding=utf-8 -*-
  from django.shortcuts import render
  
  from django.views.generic import ListView
  
  # Create your views here.
  class BillIndexView(ListView):
      template_name = 'mybill/index.html'
  
      def get_queryset(self):
          return []
  
subject: add BillIndexView