old_contents: from .models import *
  from django.contrib import admin
  
  class StoreAdmin(admin.ModelAdmin):
      list_display = ("__unicode__",)
  
  class ItemAdmin(admin.ModelAdmin):
      pass
  
  admin.site.register(Store, StoreAdmin)
  admin.site.register(Item, ItemAdmin)
  
  
new_contents: from .models import *
  from django.contrib import admin
  
  class StoreAdmin(admin.ModelAdmin):
      list_display = ("__str__",)
  
  class ItemAdmin(admin.ModelAdmin):
      pass
  
  admin.site.register(Store, StoreAdmin)
  admin.site.register(Item, ItemAdmin)
  
  
subject: Fix ref to non-existent __unicode__ function