old_contents: from django.contrib import admin
  from .models import Question
  
  # Register your models here.
  admin.site.register(Question)
new_contents: from django.contrib import admin
  from .models import Choice, Question
  
  # Register your models here.
  class QuestionAdmin(admin.ModelAdmin):
      fieldsets = [
          (None,               {'fields': ['question_text']}),
          ('Date information', {'fields': ['pub_date']}),
      ]
  
  admin.site.register(Question, QuestionAdmin)
  admin.site.register(Choice)
subject: Add customization to admin form