Универсальная функция на Питоне

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def edit_action(request):
  title = request.POST.get('title','TITLE')
  content = request.POST.get('content','CONTENT')
  article_id= request.POST.get('article_id','0')
  if article_id == '0':
     models.Article.objects.create(title=title,content=content)
     articles = models.Article.objects.all()
     return render(request, 'blog/index.html', {'articles': articles})
  else:
     article = models.Article.objects.get(pk=article_id)
     article.title = title
     article.content = content
     article.save()
     return render(request, 'blog/article_page.html', {'article': article})