[Python-Dev] Defining a path protocol

Chris Barker chris.barker at noaa.gov
Thu Apr 7 15:06:19 EDT 2016


On Thu, Apr 7, 2016 at 11:44 AM, Nathaniel Smith <njs at pobox.com> wrote:

> No, __index__ is the protocol for "do a safe coerce to integer". The name
> is misleading, but its use in non-indexing contexts is well established.
> E.g.
>
> " ab" * obj
>
> will return a string with obj.__index__() repetitions.
>
A good argument for Chris A's proposal over on python-ideas to have a
dunder method for "coerce to a lossless string", that could be used for
Path, but also for who knows what else?

As I see it , exactly the same as the __fspath__ idea, except that we'd use
a name that made it clear you might want to use it for other things (and
str would grow that method...)

-CHB



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Christopher Barker, Ph.D.
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Chris.Barker at noaa.gov
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