[Python-Dev] Defining a path protocol

[Chris Barker]

On Thu, Apr 7, 2016 at 4:03 AM, Donald Stufft <donald at stufft.io> wrote:


> It seems like it would be reasonable for pathlib.Path to call fspath on the
> path passed to pathlib.Path.__init__, which would mean that if other
> libraries
> implemented __fspath__ then you could pass their path objects to pathlib
> and
> it would just work


and then any lib that needed a path, could simply wrap Path() around
whatever was passed in.

This is much like using np.array() if you want numpy arrays -- it works
great.

numpy is trickier because they are mutable and can be big, so you don't
want to make a copy if you don't need to -- hence the np.asarray() function
-- but Paths are immutable and far more lightweight.

-CHB


-- 

Christopher Barker, Ph.D.
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