AttributeError: 'module' object has no attribute 'urls'

Python 2.7 & Django 1.10 Что я делаю не так? выдает ошибку: AttributeError: 'module' object has no attribute 'urls'

main/urls.py

from django.conf.urls import url, include
from django.contrib import admin
import article

urlpatterns = [
    url(r'^admin/', include(admin.site.urls)),
    url(r'^', include(article.urls))

]

article/urls.py

from django.conf.urls import url
from . import views

urlpatterns = [

    url(r'^$', views.basic_one, name='basic_one')
]