Рефакторинг. Сокращение кода.

Привнес чуть-чуть шорткатов

blog/comments/views.py

@@ -1,4 +1,4 @@
-from django.shortcuts import render, reverse
+from django.shortcuts import render, reverse, get_object_or_404
 from posts.models import Post
 from django.http import Http404, HttpResponseRedirect
 from .models import Comment, CommentAuthor
@@ -12,11 +12,10 @@ from typing import Union
 
 def leave_comment(request, post_id):
     parent: Union[Comment, None]
+    post: Post
+    author: Union[CommentAuthor, None]
 
-    try:
+    post = get_object_or_404(Post, pk=post_id)
-        post = Post.objects.get(id=post_id)
-    except ObjectDoesNotExist:
-        raise Http404("Пост не найден")
 
     # сделать проверку более вменяемой
     parent_id = request.POST["reply_to"]