Polymorphic model correctly saves, fixed formatting of admin

cntmanage/flightslot/models/students.py

@@ -51,7 +51,7 @@ class Student(models.Model):
 
     # Override save method to add user for login upon Student creation
     def save(self, *args, **kwargs):
-        creating = self.pk is None
+        creating: bool = self.pk is None
         super().save(*args, **kwargs)
         if creating and not self.user:
             username = f"{self.name.lower()}.{self.surname.lower()}"
@@ -68,7 +68,7 @@ class Student(models.Model):
                 username=username,
                 email=self.email,
                 password=self.default_password(),
-                is_staff=True
+                is_staff=True # allows access to admin page
             )
 
             student_group, _ = Group.objects.get_or_create(name="StudentGroup")