Django project Page not Found

Question

I am trying the basic Django tutorial: https://docs.djangoproject.com/en/3.1/intro/tutorial01/

The admin page is up and running but getting a 404 on the http://localhost:8000/polls/ page:

I cannot understand what this code is doing:

from django.contrib import admin
from django.urls import include, path

urlpatterns = [
    path('polls/', include('polls.urls')),
    path('admin/', admin.site.urls)
]

I didn't define any polls.urls, so how will it know how to route the request? Total beginner here. Coming from the old Tomcat/JBoss world.

Answer 1

'polls.urls' means polls/urls.py, i.e. you need to have a urls.py in the polls app folder.

The previous step in that tutorial asks you to create one:

https://docs.djangoproject.com/en/3.1/intro/tutorial01/#write-your-first-view

In the polls/urls.py file include the following code:

from django.urls import path

from . import views

urlpatterns = [
    path('', views.index, name='index'),
]

The URL dispatcher then will concatenate the path in your main urls.py ('polls/') and the one in the polls/urls.py ('') to resolve the view name (views.index).