404 questions

`get_object_or_404` is a Django shortcut function used to retrieve an object from the database based on a query. If the object is not found, it raises an `Http404` exception, which results in a 404 error page being displayed. This function simplifies error handling for common cases where an object must exist.

The `get_list_or_404` function is a Django shortcut used to fetch a list of objects from the database. If the query returns an empty list, it raises an `Http404` exception, resulting in a 404 error page. This function simplifies the handling of cases where you expect multiple objects but want to handle the absence of objects gracefully.

A 404 error indicates that a webpage could not be found on the server. To handle 404 errors, you should first identify and fix broken links or incorrect URLs that lead to these errors. Implementing a custom 404 error page can improve user experience by guiding visitors to other relevant content on your site. Additionally, you can set up redirects for any outdated or moved pages to ensure users and search engines are directed to the correct content.