pets/api/urls.py
from django.conf.urls import url
from api import views
app_name = "api"
urlpatterns = [
url(r"^pets/$", views.ListPets.as_view(), name="list_pets"),
url(r"^cities/$", views.CityList.as_view(), name="city-list"),
url(r"^states/$", views.StateList.as_view(), name="state-list"),
]