old_contents: from django.conf.urls import patterns, include, url
  from django.contrib import admin
  
  urlpatterns = patterns('',
      # Examples:
      # url(r'^$', 'project.views.home', name='home'),
      # url(r'^blog/', include('blog.urls')),
  
      url(r'^admin/', include(admin.site.urls)),
      url(r'^$', include('gym_app.urls')), # ADD THIS NEW TUPLE!
  )
  
new_contents: from django.conf.urls import patterns, include, url
  from django.contrib import admin, settings
  
  urlpatterns = patterns('',
      # Examples:
      # url(r'^$', 'project.views.home', name='home'),
      # url(r'^blog/', include('blog.urls')),
  
      url(r'^admin/', include(admin.site.urls)),
      url(r'^$', include('gym_app.urls')), # ADD THIS NEW TUPLE!
  )
  
  
  if settings.DEBUG:
      urlpatterns += patterns(
          'django.views.static',
          (r'^media/(?P<path>.*)',
          'serve',
          {'document_root': settings.MEDIA_ROOT}), )
subject: Add media urls mapping.