Django DTL模板语法中的url反转

 1 """template_url_demo URL Configuration
 2 
 3 The `urlpatterns` list routes URLs to views. For more information please see:
 4     https://docs.djangoproject.com/en/2.1/topics/http/urls/
 5 Examples:
 6 Function views
 7     1. Add an import:  from my_app import views
 8     2. Add a URL to urlpatterns:  path('', views.home, name='home')
 9 Class-based views
10     1. Add an import:  from other_app.views import Home
11     2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
12 Including another URLconf
13     1. Import the include() function: from django.urls import include, path
14     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
15 """
16 from django.urls import path
17 from . import views
18 
19 urlpatterns = [
20     path('', views.index,name='index'),
21     path('book/',views.book,name='book'),
22     path('movie/',views.movie,name='movie'),
23     path('city/',views.city,name='city'),
24     path('book/detail/<book_id>/<category>',views.book_detail,name='book_detail'),
25     path('login/',views.login,name='login')
26 ]

urls.py