Allows passing extra_context to ListView.as_view().

UsefulListView.py

from django.views.generic.list import ListView


class UsefulListView(ListView):
    """ Allows passing extra_context to ListView.as_view(). """
    extra_context = {}

    def get_context_data(self, **kwargs):
        context = super(UsefulListView, self).get_context_data(**kwargs)
        context.update(self.extra_context)
        return context