[Python-Dev] proposed os.fspath() change
brett at python.org
Wed Jun 15 15:15:01 EDT 2016
On Wed, 15 Jun 2016 at 12:12 Koos Zevenhoven <k7hoven at gmail.com> wrote:
> >> if isinstance(filename, os.PathLike):
> By the way, regarding the line of code above, is there a convention
> regarding whether implementing some protocol/interface requires
> registering with (or inheriting from) the appropriate ABC for it to
> work in all situations. IOW, in this case, is it sufficient to
> implement __fspath__ to make your type pathlike? Is there a conscious
> trend towards requiring the ABC?
ABCs like os.PathLike can override __subclasshook__ so that registration
isn't required (see
registration is definitely good to do to be explicit that you're trying to
meet an ABC, but it isn't strictly required.
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