cbv-wat1.py

from django.template.response import TemplateResponse
from django.views.generic import View


class MyClassBasedView(View):
    def __init__(self, foo='bar'):
        self._foo = foo

    def get(self, request):
        context = {'foo': self._foo}
        return TemplateResponse(request, 'index.html', context)

my_class_based_view = MyClassBasedView.as_view(foo='bar')
# TypeError: MyClassBasedView() received an invalid keyword 'foo'.
# as_view only accepts arguments that are already attributes of the class.