django2.2: relpace django.core.urlresolvers by django.urls

election/views.py

@@ -2,7 +2,7 @@ from django.shortcuts import get_object_or_404
 from django.views.generic import ListView, DetailView
 from django.views.generic.edit import UpdateView, CreateView
 from django.views.generic.edit import DeleteView, FormView
-from django.core.urlresolvers import reverse_lazy
+from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _
 from django.core.exceptions import PermissionDenied
 from django.db import transaction