text: from __future__ import absolute_import, unicode_literals
  
  from django.conf import settings
  from django.conf.urls import url
  from django.contrib.auth import views as auth_views
  
  from wagtail.wagtailcore import views
  from wagtail.wagtailcore.utils import WAGTAIL_APPEND_SLASH
  
  
  if WAGTAIL_APPEND_SLASH:
      # If WAGTAIL_APPEND_SLASH is True (the default value), we match a
      # (possibly empty) list of path segments ending in slashes.
      # CommonMiddleware will redirect requests without a trailing slash to
      # a URL with a trailing slash
      serve_pattern = r'^((?:[\w\-]+/)*)$'
  else:
      # If WAGTAIL_APPEND_SLASH is False, allow Wagtail to serve pages on URLs
      # with and without trailing slashes
      serve_pattern = r'^([\w\-/]*)$'
  
  
  WAGTAIL_FRONTEND_LOGIN_TEMPLATE = getattr(
      settings, 'WAGTAIL_FRONTEND_LOGIN_TEMPLATE', 'wagtailcore/login.html'
  )
  
  
  urlpatterns = [
      url(r'^_util/authenticate_with_password/(\d+)/(\d+)/$', views.authenticate_with_password,
          name='wagtailcore_authenticate_with_password'),
      url(r'^_util/login/$', auth_views.login, {'template_name': WAGTAIL_FRONTEND_LOGIN_TEMPLATE},
          name='wagtailcore_login'),
  
      # Front-end page views are handled through Wagtail's core.views.serve
      # mechanism
      url(serve_pattern, views.serve, name='wagtail_serve')
  ]
  