创建的网址.py文件包含app_name=“articles”，该文件在作为模型模板建立的“模板_base.html”中无法识别。
NoReverseMatch at /articles/
Reverse for 'article' with keyword arguments '{'slug': ''}' not found. 1 pattern(s) tried: \ ['articles/(?P\<slug\>\[-a-zA-Z0-9\_\]+)/\\Z'\]
受影响的线路为：
\<h2\>\<a href="{% url 'articles:article' slug=article.slug %}"\>{{ article.titre }}\</a\>\ </h2\>
3次我尝试执行与课程中相同的代码，但我需要您的帮助。
网址.py
from django.contrib import admin
from django.urls import path, include
from articles import views
app_name = "articles"
urlpatterns = [
path('', views.articles_view, name='articles'),
path('<slug:slug>/', views.article_view, name='article')
]
模板_base.html
<!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="UTF-8">
<title>{% block titre %}{% endblock %}</title>
</head>
<body>
<ul style="list-style: none">
<li style="display: inline-block; padding: 10px 20px;">
<a href="{% url 'home' %}">Accueuil</a>
</li>
<li style="display: inline-block; padding: 10px 20px;">
<a href="{% url 'articles:articles' %}">Articles</a>
</li>
<li style="display: inline-block; padding: 10px 20px;">
<a href="{% url 'contact' %}">Contact</a>
</li>
</ul>
{% block contenu %} {% endblock %}
</body>
</html>
视图.py
from django.shortcuts import render
from django.http import HttpResponse
from articles.models import Article
def articles_view(request):
articles = Article.objects.all()
return render(request, 'articles/list.html', context={'articles': articles})
def article_view(request, slug):
return HttpResponse("Page d'article")