old_contents: # -*- coding: utf8 -*-
  
new_contents: # -*- coding: utf8 -*-
  from django.contrib import admin
  from django.contrib.auth.admin import UserAdmin as DjangoUserAdmin
  
  from .models import User
  
  
  @admin.register(User)
  class UserAdmin(DjangoUserAdmin):
      pass
  
subject: Add UserAdmin