Fixed imports of announcements

announcement_board/migrations/0005_alter_announcement_announcement_pic_and_more.py

+# Generated by Django 4.0.4 on 2022-05-23 16:08
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('announcement_board', '0004_announcement_announcement_pic'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='announcement',
+            name='announcement_pic',
+            field=models.FileField(blank=True, null=True, upload_to='media/announcement_board'),
+        ),
+        migrations.AlterField(
+            model_name='announcement',
+            name='pub_date',
+            field=models.DateField(auto_now_add=True),
+        ),
+    ]

announcement_board/views.py

-from types import NoneType
 from django.shortcuts import render
 from django.views import View
 from django.views.generic.detail import DetailView
 from django.views.generic.edit import CreateView
 from .models import Announcement, Reaction
 
-
 class AnnouncementView(View):
     def get(self, request):
         objects_set = {