[Python-ideas] Dunder method to make object str-like
chris.barker at noaa.gov
Thu Apr 7 15:02:16 EDT 2016
On Thu, Apr 7, 2016 at 11:59 AM, Brett Cannon <brett at python.org> wrote:
> class StringLike(abc.ABC):
> def __str__(self):
> """Return the string representation of something."""
> StringLike.register(pathlib.PurePath) # Any 3rd-party library can do
> the same.
> You could also call the class StringablePath or something and get the
> exact same concept across where you are using the registration abilities of
> ABCs to semantically delineate when a class's __str__() returns a usable
> file path.
> The drawback is that this isn't easily backported like `path.__ospath__()
> if hasattr(path, '__ospath__') else path` for libraries that don't
> necessarily have access to pathlib but want to be compatible with accepting
> path objects.
and a plus is that it's compatible with type hinting -- is that the future
Christopher Barker, Ph.D.
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
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Chris.Barker at noaa.gov
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