[Python-Dev] file system path protocol PEP (original) (raw)

Koos Zevenhoven k7hoven at gmail.com
Fri May 13 05:48:33 EDT 2016

On Fri, May 13, 2016 at 12:24 PM, Sven R. Kunze <srkunze at mail.de> wrote:

On 13.05.2016 10:36, Koos Zevenhoven wrote:

This has just been discussed very recently in this thread (and earlier too). Could you point me to that? It seems I missed that part. I only found posts related to performance degradation.

This issue is coupled with the future optimization questions.

However, the proposed semantics will change if the checks are swapped. So, my actual question is:

Is that an intended API inconsistency or a known bug supposed to be resolved later?

Taking into account the description (and the drafted type hint), which the documentation will probably reflect, the semantic effects of that are very minor or nonexistent.

I do think the documentation of the protocol should say that str or bytes subclasses should not implement fspath.

So no API inconsistency there.

-- Koos

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