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From: Peter Otten <__peter__@web.de>
Subject: Re: Python 3 resuma a file download
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Xref: csiph.com comp.lang.python:93387

zljubisic@gmail.com wrote:

> But how to read chunks?

Instead of

>         data = response.read() # a `bytes` object
>         out_file.write(data)
 
use a loop:

CHUNKSIZE = 16*1024 # for example
while True:
   data =  response.read(CHUNKSIZE)
   if not data:
       break
   out_file.write(data)


This can be simplified:

shutil.copyfileobj(response, out_file)

https://docs.python.org/dev/library/shutil.html#shutil.copyfileobj