views.py

from django.conf.urls import url
from django.contrib.auth.models imort User
from django.shortcuts import render
from django.views.generic import ListView

# views.py
def index(request):
    users = User.objects.all()
    staff = User.objects.filter(is_staff=True)
    context = {'users': users, 'staff': staff}
    return render(request, 'home/index.html', context)

class DataMixin(object):
    def get_context_data(self, **kwargs):
        context = super()
        context['staff'] = User.objects.filter(is_staff=True)
        return context

class IndexView(DataMixin, ListView):
    model = User
    context_object_name = 'users'  # object_list
    template_name = 'home/index.html'
    
    def get_context_data(self, **kwargs):
        context = super()
        context['superuser'] = User.objects.filter(is_superuser=True)
        return context
    
class TwoView(DataMixin, ListView):
    pass
    
# urls.py
from home.views import index, IndexView

urlpatterns = [
    url(r'^$', index, name='index'),
    url(r'^$', IndexView.as_view(), name='index'),
]