django：handler404和TemplateView.as_view

I want to optimize my code:

我想优化我的代码：

# --- views.py ---
def error_page_404(request):
    return render(request, '404.html', status=404)


# --- urls.py ---
handler404 = 'main.views.error_page_404'

urlpatterns = patterns('',
    # ...
    url(r'^404$', 'main.views.error_page_404'),
    # ...
)
# ---