I was thinking this morning while working on a project that outputs a lot of CSV that that would be very handy if Response would obey to the file API, so one would do something like:

import csv

@app.route('/')
async def my_view(request, response):
    writer = csv.writer(response)
    writer.writerow(xxxx)

Meaning that at first response.write call, the Response would send the headers and first chunk, and then stream chunks at each later calls.

I remember we did discuss this some time ago, but can't remember the conclusion, so just put here a reminder to either implement this, or explain it would not be a good idea. :)