Remove deprecated parameter alias for `importlib.resources.files`

[donbarbos]

Argument name was replaced from package to anchor for Python 3.12.0a4 in PR #100598, and comment to remove this compatibility was added separately in PR #117054, both by @jaraco.
Looks like it was missed so I suggest to remove this compatibility.

Docs: https://docs.python.org/dev/library/importlib.resources.html#importlib.resources.files
Source:

cpython/Lib/importlib/resources/_common.py

Lines 19 to 56 in 5a7f5ea

	def package_to_anchor(func):
	"""
	Replace 'package' parameter as 'anchor' and warn about the change.
	Other errors should fall through.
	>>> files('a', 'b')
	Traceback (most recent call last):
	TypeError: files() takes from 0 to 1 positional arguments but 2 were given
	Remove this compatibility in Python 3.14.
	"""
	undefined = object()
	@functools.wraps(func)
	def wrapper(anchor=undefined, package=undefined):
	if package is not undefined:
	if anchor is not undefined:
	return func(anchor, package)
	warnings.warn(
	"First parameter to files is renamed to 'anchor'",
	DeprecationWarning,
	stacklevel=2,
	)
	return func(package)
	elif anchor is undefined:
	return func()
	return func(anchor)
	return wrapper
	@package_to_anchor
	def files(anchor: Optional[Anchor] = None) -> Traversable:
	"""
	Get a Traversable resource for an anchor.
	"""
	return from_package(resolve(anchor))

Linked PRs

• gh-138044: Remove deprecated parameter alias for importlib.resources.files #138059
• gh-138044: Fix importlib.resources.files deprecation docs #139632

[StanFromIreland]

Do you want to open a PR?

[donbarbos]

Yes, I would like to

[brianschubert]

1. I noticed that both the referenced PR are syncs with importlib_resources. Should changes like this generally be made upstream in importlib_resources first?
2. These days we tend to prefer 5 year deprecation periods (PEP-387). Since the warning was added in 3.12, would it make sense to instead slate it for removal in 3.17?