GH-109653: Defer import of importlib.metadata._adapters (python/cpython#109829)

---------

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

Author: AA-Turner

importlib_resources/_common.py

@@ -12,8 +12,6 @@
 from typing import Union, Optional, cast
 from .abc import ResourceReader, Traversable
 
-from .future.adapters import wrap_spec
-
 Package = Union[types.ModuleType, str]
 Anchor = Package
 
@@ -111,6 +109,9 @@ def from_package(package: types.ModuleType):
     Return a Traversable object for the given package.
 
     """
+    # deferred for performance (python/cpython#109829)
+    from .future.adapters import wrap_spec
+
     spec = wrap_spec(package)
     reader = spec.loader.get_resource_reader(spec.name)
     return reader.files()

newsfragments/+.feature.rst

@@ -0,0 +1 @@
+Deferred select imports in for a speedup (python/cpython#109829).