text: from django.contrib import admin
  
  from mainapp.models import Article, Comment, Tech, TechComment, Sport, SportComment
  
  admin.site.register(Article)
  admin.site.register(Comment)
  admin.site.register(Tech)
  admin.site.register(TechComment)
  admin.site.register(Sport)
  admin.site.register(SportComment)
  