django CBV pass argument to view.md

# urls.py
from cbvApp.views import GreetingView

urlpatterns = [
    path('', GreetingView.as_view(msg='hi'))
]

# views.py
from django.views.generic import View
from django.http import HttpResponse

class GreetingView(View):
  msg = None
  def get(self, request):
    return HttpResponse(self.msg)