Add support for pathlib.Path

• cattrs version: 0.9.0
• Python version: 3.7
• Operating System: Win

Description

I am trying to serialize a class with a pathlib.Path object

What I Did

from pathlib import Path
import attr

@attr.s
class PathTest():
    my_path: Path = attr.ib(default=Path('c:/test'))

cattr.structure({'my_path': 'c:/my_filepath',}, PathTest)

Error:

ValueError: Unsupported type: <class 'pathlib.Path'>. Register a structure hook for it.

The fix is easy, but I really feel like this is a fundamental type and should be supported out of the box

cattr.register_structure_hook(Path, lambda d, t: Path(d))
cattr.register_unstructure_hook(Path, lambda d: str(d))

[Tinche]

Alright, I consuled some other folks and I’ve changed my mind. Let’s add this.

[brendan-simon-indt]

Yep, that works. I love the way Python is supposed to be pseudocode like and easy to read and understand 😉 🙄

My lazy workaround was:

cattr.register_unstructure_hook( Path, lambda d: str(d) )       # type: ignore

🤣