Try to access resource using importlib.resources

stub42 · web-flow · commit 6ee7e564acbd · 2026-03-03T17:57:17.000+11:00
Merge pull request #134 from scw/use-importlib-resources
diff --git a/src/pytz/__init__.py b/src/pytz/__init__.py
@@ -95,6 +95,16 @@ def open_resource(name):
         filename = os.path.join(os.path.dirname(__file__),
                                 'zoneinfo', *name_parts)
         if not os.path.exists(filename):
+            # pkg_resources is deprecated, try with importlib first
+            try:
+                from importlib.resources import files
+            except ImportError:
+                files = None
+
+            if files is not None:
+                # retrieve the zoneinfo file Path object and return its file handle
+                return files(__name__).joinpath('zoneinfo', *name_parts).open('rb')
+
             # http://bugs.launchpad.net/bugs/383171 - we avoid using this
             # unless absolutely necessary to help when a broken version of
             # pkg_resources is installed.
