Bump importlib-resources from 6.0.1 to 6.4.0 (#2285)

* Bump importlib-resources from 6.0.1 to 6.4.0

Bumps [importlib-resources](https://github.com/python/importlib_resources) from 6.0.1 to 6.4.0.
- [Release notes](https://github.com/python/importlib_resources/releases)
- [Changelog](https://github.com/python/importlib_resources/blob/main/NEWS.rst)
- [Commits](https://github.com/python/importlib_resources/compare/v6.0.1...v6.4.0)

---
updated-dependencies:
- dependency-name: importlib-resources
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update importlib-resources==6.4.0

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/importlib_resources/readers.py

@@ -1,12 +1,15 @@
 import collections
+import contextlib
 import itertools
 import pathlib
 import operator
+import re
+import warnings
 
 from . import abc
 
 from ._itertools import only
-from ._compat import ZipPath
+from .compat.py39 import ZipPath
 
 
 def remove_duplicates(items):
@@ -62,7 +65,7 @@ class MultiplexedPath(abc.Traversable):
     """
 
     def __init__(self, *paths):
-        self._paths = list(map(pathlib.Path, remove_duplicates(paths)))
+        self._paths = list(map(_ensure_traversable, remove_duplicates(paths)))
         if not self._paths:
             message = 'MultiplexedPath must contain at least one path'
             raise FileNotFoundError(message)
@@ -130,7 +133,36 @@ class NamespaceReader(abc.TraversableResources):
     def __init__(self, namespace_path):
         if 'NamespacePath' not in str(namespace_path):
             raise ValueError('Invalid path')
-        self.path = MultiplexedPath(*list(namespace_path))
+        self.path = MultiplexedPath(*map(self._resolve, namespace_path))
+
+    @classmethod
+    def _resolve(cls, path_str) -> abc.Traversable:
+        r"""
+        Given an item from a namespace path, resolve it to a Traversable.
+
+        path_str might be a directory on the filesystem or a path to a
+        zipfile plus the path within the zipfile, e.g. ``/foo/bar`` or
+        ``/foo/baz.zip/inner_dir`` or ``foo\baz.zip\inner_dir\sub``.
+        """
+        (dir,) = (cand for cand in cls._candidate_paths(path_str) if cand.is_dir())
+        return dir
+
+    @classmethod
+    def _candidate_paths(cls, path_str):
+        yield pathlib.Path(path_str)
+        yield from cls._resolve_zip_path(path_str)
+
+    @staticmethod
+    def _resolve_zip_path(path_str):
+        for match in reversed(list(re.finditer(r'[\\/]', path_str))):
+            with contextlib.suppress(
+                FileNotFoundError,
+                IsADirectoryError,
+                NotADirectoryError,
+                PermissionError,
+            ):
+                inner = path_str[match.end() :].replace('\\', '/') + '/'
+                yield ZipPath(path_str[: match.start()], inner.lstrip('/'))
 
     def resource_path(self, resource):
         """
@@ -142,3 +174,21 @@ class NamespaceReader(abc.TraversableResources):
 
     def files(self):
         return self.path
+
+
+def _ensure_traversable(path):
+    """
+    Convert deprecated string arguments to traversables (pathlib.Path).
+
+    Remove with Python 3.15.
+    """
+    if not isinstance(path, str):
+        return path
+
+    warnings.warn(
+        "String arguments are deprecated. Pass a Traversable instead.",
+        DeprecationWarning,
+        stacklevel=3,
+    )
+
+    return pathlib.Path(path)