ImportError cannot import name DetailView

While completing "Writing your first Django app, part 4", I ran into
an error. I have almost completed the online tutorial, but using the
code verbatum, I get this error. I even went as far as to cut and
paste the code, rather than typing it as I usually do, just in case I
made a simple error I could not see.

Exception Location: C:\DjangoProjects\mysite\polls\urls.py in
<module>, line 2

Copy of line 2 of urls.py..... from django.views.generic import
DetailView, ListView

Anyone have any ideas?

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