title: cannot import name HttpResponse
body: <p>views.py</p>
  
  <pre><code>from django import HttpResponse
  
  def hello(request):
      return HttpResponse("Hello world ! ")
  </code></pre>
  
  <hr>
  
  <pre>
  Request Method: GET
  Request URL:    http://127.0.0.1:8000/hello/
  Django Version: 1.3.1
  Exception Type: ImportError
  Exception Value:    
  cannot import name HttpResponse
  </pre>