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Fri Apr 8 02:57:55 EDT 2016 · https://mail.python.org/pipermail/python-dev/2016-April/143781.html

On Fri, Apr 8, 2016 at 4:35 PM, Victor Stinner <victor.stinner at gmail.com> wrote:
> Sorry, I don't have time to read the whole discussion. What is the problem
> with adding a __str__ to pathlib?
>
> Victor

Everything else has __str__ too, so you run the risk of open(["Hello",
"World"], "w") working and doing something weird. Or of passing an
open file object to something that was expecting a file name, and
having *that* work too. Calling str(p) on something that ought to be
either a Path or a string should raise an exception if given something
else.

ChrisA

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[Python-Dev] summary: a Path protocol