Djangoチュートリアルの頭でいきなりハマった

from django.http import HttpResponse
def index(request):
return HttpResponse("Hello, world. You're at the polls index.")

from django.conf.urls import url
from . import views
urlpatterns = [
url(r'^, views.index, name='index'), ]

from django.conf.urls import include, url
from django.contrib import admin
urlpatterns = [
url(r'^polls/', include('polls.urls')),
url(r'^admin/', admin.site.urls),
]

python manage.py runserver

NameError: name 'url' is not defined

mysite/
 - manage.py
 - mysite/
  - __init__.py
  - settings.py
  - urls.py ← ◯ 正しくはここに記載
  - wsgi.py
 - polls/
  - __init__.py
  - admin.py
  - apps.py
 - migrations/
  - __init__.py
  - models.py
  - tests.py
  - views.py
  - urls.py ← ☓ 間違って新しく作ってた