old_contents: """develop URL Configuration
  
  The `urlpatterns` list routes URLs to views. For more information please see:
      https://docs.djangoproject.com/en/1.10/topics/http/urls/
  Examples:
  Function views
      1. Add an import:  from my_app import views
      2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
  Class-based views
      1. Add an import:  from other_app.views import Home
      2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
  Including another URLconf
      1. Import the include() function: from django.conf.urls import url, include
      2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
  """
  from django.conf.urls import url, include, handler404,handler403,handler404,han
  from django.contrib import admin
  from django.conf import settings
  from django.conf.urls.static import static
  from django.contrib.staticfiles.urls import staticfiles_urlpatterns
  from news.views import NotFound404
  # 
  # handler400 = NotFound404
  # handler403 = NotFound404
  # handler404 = NotFound404
  # handler500 = NotFound404
  
  urlpatterns = [
      url(r'^Adminqaqalar.aspx', admin.site.urls),
      url(r'^',include('news.urls')),
  ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
  
  urlpatterns += staticfiles_urlpatterns()
  
new_contents: """develop URL Configuration
  
  The `urlpatterns` list routes URLs to views. For more information please see:
      https://docs.djangoproject.com/en/1.10/topics/http/urls/
  Examples:
  Function views
      1. Add an import:  from my_app import views
      2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
  Class-based views
      1. Add an import:  from other_app.views import Home
      2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
  Including another URLconf
      1. Import the include() function: from django.conf.urls import url, include
      2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
  """
  from django.conf.urls import url, include, handler404,handler403,handler404,handler500
  from django.contrib import admin
  from django.conf import settings
  from django.conf.urls.static import static
  from django.contrib.staticfiles.urls import staticfiles_urlpatterns
  from news.views import NotFound404
  #
  # handler400 = NotFound404
  # handler403 = NotFound404
  # handler404 = NotFound404
  # handler500 = NotFound404
  
  urlpatterns = [
      url(r'^Adminqaqalar.aspx', admin.site.urls),
      url(r'^',include('news.urls')),
  ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
  
  urlpatterns += staticfiles_urlpatterns()
  
subject: customize errors