Adding context data to a TemplateView?

I'm using a generic TemplateView (django-1.4), but I want to be able to add something to the context.  Is that possible?

The docs at https://docs.djangoproject.com/en/1.4/topics/generic-views/#adding-extra-context talk about "an extra optional parameter, extra_context", but I don't get what they're trying to explain.  I tried the obvious:

    url(r'^about$',

    TemplateView.as_view(template_name='legal_ipsum/about.html',

                         extra_context={'pagename': 'about'})

        ),

in my urls.py file, but that just raises: "TemplateView() received an invalid keyword 'extra_context'".  What am I missing here?

--

Roy Smith

roy@panix.com