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From: Chris Lalancette <clalancette@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: Looking for ideas to improve library API
Date: Thu, 26 Nov 2015 08:33:46 -0500
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On Thu, Nov 26, 2015 at 7:36 AM, MRAB <python@mrabarnett.plus.com> wrote:
> Why pass a file descriptor? Why not a filename?

The reason for a file descriptor is so that I can also add other
file-like objects, such as StringIO.  My unit tests, for instance,
rely heavily on this.  That being said, it is not *strictly* required
(my unit tests could be modified to write to temporary files), but I
thought it was a nice feature.

Chris