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![Blaine McCarthy](https://secure.gravatar.com/avatar/4473c3d73689b9f7af677240d5736fcb?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Blaine McCarthy
17,030 PointsReverse for 'list' with arguments '()' and keyword arguments '{}' not found. 0 pattern(s) tried: []
Help! I've restarted this whole class twice now because I couldn't get past this - whenever I add a namespace, I immediately receive the error in the subject. Prior to that, all pages and links worked.
The error references the {% url 'courses:list' %} part from layout.html, but that seems fine?
urls.py:
from django.conf.urls import include, url
from django.contrib.staticfiles.urls import staticfiles_urlpatterns
from django.contrib import admin
from . import views
urlpatterns = [
# Examples:
# url(r'^$', 'learning_site.views.home', name='home'),
# url(r'^blog/', include('blog.urls')),
url(r'^courses/',include('courses.urls',namespace='courses')),
url(r'^admin/', include(admin.site.urls)),
url(r'^$',views.home,name='home'),
]
urlpatterns += staticfiles_urlpatterns()
app urls.py
from django.conf.urls import url
from courses import views
urlpatterns = [
url(r'(?P<course_pk>\d+)/(?P<step_pk>\d+)/$',views.step_detail,name="step"),
url(r'(?P<pk>\d+)/$',views.course_detail,name="detail"),
url(r'^$',views.course_list,name="courses"),
]
layout.html:
<!DOCTYPE html>
{% load static from staticfiles %}
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>{% block title %}{% endblock title %}</title>
<link rel="stylesheet" href="{% static 'css/layout.css' %}">
</head>
<body>
<div class="site-container">
<nav>
<a href="{% url 'home' %}">Home</a>
<a href="{% url 'courses:list' %}">Course List</a>
</nav>
{% block content %}
{% endblock content %}
</div>
</body>
</html>
course_list.html
{% extends "layout.html" %}
{% block title %}Available Courses{% endblock title %}
{% block content %}
<div class="cards">
{% for course in courses %}
<div class="card">
<header><a href="{% url 'courses:detail' pk=course.pk %}">{{course.title}}</a></header>
<div class="card-copy">
{{course.description}}
</div>
</div>
{% endfor %}
</div>
{% endblock content %}
1 Answer
![Andreas cormack](https://uploads.teamtreehouse.com/production/profile-photos/98061/micro_mypic.jpg)
Andreas cormack
Python Web Development Techdegree Graduate 33,011 PointsHi Blaine
You have named the url that lists all the courses in the app.urls as 'courses' , shouldn't this be called 'list'?
urlpatterns = [
url(r'(?P<course_pk>\d+)/(?P<step_pk>\d+)/$',views.step_detail,name="step"),
url(r'(?P<pk>\d+)/$',views.course_detail,name="detail"),
#error is here i think
url(r'^$',views.course_list,name="courses"),
# try this
url(r'^$',views.course_list,name="list"),
]
let me know if this works
Blaine McCarthy
17,030 PointsBlaine McCarthy
17,030 Pointsomg. That's a little embarrassing.. Thanks Andreas!
Andreas cormack
Python Web Development Techdegree Graduate 33,011 PointsAndreas cormack
Python Web Development Techdegree Graduate 33,011 PointsDont worry, i have made so many errors like this
Mihai Dinu
12,763 PointsMihai Dinu
12,763 PointsThanks, you save my life :)