- fixed deprecation warning;

src/slipcover/importer.py

@@ -6,9 +6,16 @@
 import sys
 import sysconfig
 
-from importlib.abc import MetaPathFinder, Loader, ResourceReader
+from importlib.abc import MetaPathFinder, Loader
 from importlib import machinery
 
+if sys.version_info >= (3, 12):
+    from importlib.resources.abc import TraversableResources
+elif sys.version_info >= (3, 11):
+    from importlib.resources.abc import ResourceReader as TraversableResources
+else:
+    from importlib.abc import ResourceReader as TraversableResources
+
 
 if sys.version_info[0:2] < (3,9):
     # Path.is_relative_to is new in Python 3.9
@@ -29,8 +36,7 @@ def __init__(self, sci: Slipcover, orig_loader: Loader, origin: str):
             delattr(self, "get_resource_reader")
 
     # for compability with loaders supporting resources, used e.g. by sklearn
-    def get_resource_reader(self, fullname: str) -> Optional[ResourceReader]:
-        # FIXME deprecated in Python 3.12
+    def get_resource_reader(self, fullname: str) -> Optional[TraversableResources]:
         if hasattr(self.orig_loader, 'get_resource_reader'):
             return self.orig_loader.get_resource_reader(fullname)
         return None

tests/test_importer.py

@@ -189,7 +189,10 @@ def test_loader_supports_resources(tmp_path):
 import imported
 
 def test():
-    assert list(r.contents('imported')) != []
+    if sys.version_info >= (3, 12):
+        assert list(r.files('imported').iterdir()) != []
+    else:
+        assert list(r.contents('imported')) != []
 """)
 
     p = subprocess.run([sys.executable, "-m", "slipcover", "--silent", "-m", "pytest", "-qq", cmdfile])