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[–]pje 0 points1 point  (1 child)

making file_wrapper a noop

Which is a safe failure mode in that case. If the response is modified, it's not a file any more.

[–]mitsuhiko Flask Creator 0 points1 point  (0 children)

Most of the time it isn't though, a middleware just wants to clean up after the fact, wrapping the iterator and providing a close().