Resource should not be path-like #241
Description
Resource is currently defined as:
Resource = Union[str, os.PathLike]os.PathLike is:
An abstract base class for objects representing a file system path, e.g. pathlib.PurePath.
Resources are not file system entities and os.PathLike is therefore inappropriate. In addition, os.fspath is not used to convert Resources to strings, so functions which manipulate paths are unsafe:
In [1]: !python -m pip show importlib-resources | rg Version
Version: 5.3.0
In [2]: import importlib_resources
In [3]: class Foo:
...: def __fspath__(self):
...: return "__init__.py"
...:
In [4]: importlib_resources.open_text("asyncio", Foo())
[...]
FileNotFoundError: [Errno 2] No such file or directory: '/nix/store/qx995zl14gqgx0ly0hwx3cy0fcz27ich-python3-3.9.6/lib/python3.9/asyncio/<__main__.Foo object at 0x11172d550>'