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

Question

Python 2.7 & Django 1.10 ERROR:

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')
]

Structure:

APP/main/urls.py

APP/article/urls.py

Answer 1

In main/urls.py

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

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

]

Or

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

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

]

You can learn more from Django Documentation