Django StreamingHttpResponse: Stream Large Files Efficiently

Here's an example of using 'StreamingHttpResponse' in Django to stream a large file:

from django.http import StreamingHttpResponse
import os

def stream_file(request):
    filepath = '/path/to/large/file'
    chunk_size = 8192

    def file_iterator(filepath, chunk_size):
        with open(filepath, 'rb') as f:
            while True:
                data = f.read(chunk_size)
                if not data:
                    break
                yield data

    response = StreamingHttpResponse(file_iterator(filepath, chunk_size))
    response['Content-Length'] = os.path.getsize(filepath)
    response['Content-Disposition'] = 'attachment; filename='%s'' % os.path.basename(filepath)
    return response

In this example, 'file_iterator()' is a generator function that reads the file in chunks of 'chunk_size' bytes and yields each chunk. The 'StreamingHttpResponse' is then created with the generator function as its content. The 'Content-Length' header is set to the size of the file, and the 'Content-Disposition' header is set to indicate that the file should be downloaded as an attachment with its original filename.