#urlpatterns

當在撰寫Django1.9版本的url.py的urlpatterns，會碰到要使用同樣的view裡頭的class，一直要用同樣的路徑，必須要重複寫的時候，例如

from django.conf.urls import url from django.contrib import admin

import view import restaurants.view import django.contrib.auth.views

urlpatterns = [    url(r'^admin/', admin.site.urls),    url(r'^accounts/login/$', django.contrib.auth.views.login, {'template_name':'login.html'}),    url(r'^accounts/logout/$', django.contrib.auth.views.logout),    url(r'^menu/$', restaurants.view.menu),    url(r'^restaurants_list/$', restaurants.view.list_restaurants),    url(r'^users_list/$', restaurants.view.list_users),    url(r'^comment/(?P<id>\d{1,6})/$', restaurants.view.comment),    url(r'^firstmenu/$', 'restaurants.view.menu',{'id':'1'}),    url(r'^secondmenu/$', 'restaurants.view.menu',{'id':'2'}),    url(r'^setc/$', restaurants.view.set_c),    url(r'^getc/$', restaurants.view.get_c),    url(r'^session_test/$', restaurants.view.session_test),    url(r'^index/$', view.index),    url(r'^welcome/$', view.welcome),    url(r'^accounts/register/$', view.register), ]

可以改寫成 下面  多個 urlpatterns與extra_patterns 用 += 附加

from django.conf.urls import url, include from django.contrib import admin import django.contrib.auth.views

import view as home

urlpatterns = [    url(r'^welcome/$', home.welcome),    url(r'^index/$', home.index),    url(r'^accounts/register/$', home.register), ]

import restaurants.view as app

urlpatterns += [    url(r'^admin/', admin.site.urls),    url(r'^menu/$', app.menu),    url(r'^firstmenu/$', 'app.menu',{'id':'1'}),    url(r'^secondmenu/$', 'app.menu',{'id':'2'}),    url(r'^restaurants_list/$', app.list_restaurants),    url(r'^setc/$', app.set_c),    url(r'^getc/$', app.get_c),    url(r'^users_list/$', app.list_users),    url(r'^comment/(?P<id>\d{1,6})/$', app.comment),    url(r'^session_test/$', app.session_test), ]