old_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^get_schools$', views.get_schools, name='get_schools'),
      url(r'^signup$', views.signup, name='signup'),
  ]
  
new_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^get_schools$', views.get_schools, name='get_schools'),
      url(r'^signup$', views.signup, name='signup'),
      url(r'^login$', views.login, name='login'),
  ]
  
subject: Add login url pattern