old_contents: from django.shortcuts import render
  from django.http import HttpResponse
  
  
  def new_post(request):
      return render(request, 'new_post.html')
  
new_contents: from django.shortcuts import render
  from django.http import HttpResponse
  
  
  def new_post(request):
      return render(request, 'new_post.html')
  
  
  def post_list(request):
      return render(request, 'post_list.html')
  
subject: Add 'post_list' view