Tutorial missing import: Http404

obviously one needs to change:

from django.http import HttpResponse,

to

from django.http import HttpResponse, Http404

but that's a speed-bump that should not be in the tutorial.

NameError at /polls/34/

global name 'Http404' is not defined

Request Method:	GET
Request URL:	http://localhost:8000/polls/34/
Django Version:	1.8
Exception Type:	NameError
Exception Value:	global name 'Http404' is not defined
Exception Location:	/home/john/Documents/code/python/django/djangostart/polls/views.py in detail, line 19
Python Executable:	/usr/bin/python
Python Version:	2.7.6
Python Path:	['/home/john/Documents/code/python/django/djangostart', '/usr/local/lib/python2.7/dist-packages/Django-1.8-py2.7.egg', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PILcompat', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client']
Server time:	Fri, 10 Apr 2015 21:30:24 +0000

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