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In this way, what is use of render in Django?
Combines a given template with a given context dictionary and returns an HttpResponse object with that rendered text. render() is the same as a call to render_to_response() with a context_instance argument that forces the use of a RequestContext.
In this regard, what is get_object_or_404 in Django?
get_object_or_404() Calls get() on a given model manager, but it raises Http404 instead of the model's DoesNotExist exception.
HttpResponse is a response class with string data. While HttpRequest is created by Django, HttpResponse is created by programmer. HttpResponse has subclasses including JsonResponse , StreamingHttpResponse , and FileResponse .