2. Transforming Text into Valid Filenames: A Python Guide
   Allowed Characters:Filenames can only contain specific characters depending on the operating system. Common allowed characters include alphanumeric characters (a-z, A-Z, 0-9), underscores (_), hyphens (-), and periods (.)
3. Ensuring User-Friendly URLs: Populating Django's SlugField from CharField
   Using the save() method:This approach involves defining a custom save() method for your model. Within the method, you can utilize the django