old_contents: from django.contrib import admin
  from polls.models import Question
  
  class QuestionAdmin(admin.ModelAdmin):
      fieldsets = [
          (None,               {'fields': ['question_text']}),
          ('Date information', {'fields': ['pub_date'], 'classes': ['collapse']}),
      ]
  
  admin.site.register(Question, QuestionAdmin)
new_contents: from django.contrib import admin
  from polls.models import Choice, Question
  
  class QuestionAdmin(admin.ModelAdmin):
      fieldsets = [
          (None,               {'fields': ['question_text']}),
          ('Date information', {'fields': ['pub_date'], 'classes': ['collapse']}),
      ]
  
  admin.site.register(Question, QuestionAdmin)
  admin.site.register(Choice)
subject: edit admin.py