old_contents: from django.conf.urls import url
  from django.contrib.auth.views import login, logout, logout_then_login
  from .views import SignInView
  
  
  urlpatterns = [
  
      # Authentication
      # ==============
      url(
          regex=r'^login/$',
          view=login,
          name='login'
      ),
  
      url(
          regex=r'^logout/$',
          view=logout,
          name='logout'
      ),
  
      url(
          regex=r'^logout-then-login/$',
          view=logout_then_login,
          name='logout_then_login'
      ),
  ]
  
new_contents: from django.conf.urls import url
  from django.contrib.auth.views import login, logout, logout_then_login, password_change, password_change_done
  from .views import SignInView
  
  
  urlpatterns = [
  
      # Authentication
      # ==============
      url(
          regex=r'^login/$',
          view=login,
          name='login'
      ),
  
      url(
          regex=r'^logout/$',
          view=logout,
          name='logout'
      ),
  
      # Password Change
      # ===============
      url(
          regex=r'^logout-then-login/$',
          view=logout_then_login,
          name='logout_then_login'
      ),
  
      url(
          regex=r'^password-change/$',
          view=password_change,
          name='password_change'
      ),
  
      url(
          regex=r'^password-change/done/$',
          view=password_change_done,
          name='password_change_done'
      ),
  ]
  
subject: Add password change url patterns