Closing buffers

Using Django Forms & APIs
1

Hi,

I was wondering, does Django call the close() method on a given buffer, after a FileResponse was served?

I am referring to the example from the documentation: How to create PDF files

In the end it actually is a Python question. Should you call the close() method on a buffer, as discussed in this StackOverflow question: Do I have to do StringIO.close()?

The suggestion is: Don’t rely on any magic. Call the close() method, if you can. Anything else may or may not cause a memory leak.

2

Quoting directly from the docs for HttpFileResponse:

The file will be closed automatically, so don’t open it with a context manager.

You can see where this is being done in django.http.response.FileResponse._set_streaming_content

Note: The SO reference you’ve provided is more than 12 years old, probably working with Django 1.2 - 1.4 and using Python 2.x. I would not attach any value to it.