Dedupe when package exists with multiple suffixes

FFY00 · FFY00 · commit c09a12ecf9ca · 2026-01-20T01:39:14.000Z
Signed-off-by: Filipe Laíns &lt;lains@riseup.net&gt;
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
@@ -1501,11 +1501,11 @@ def _find_children(self):
                         yield entry.name
                     # files
                     if entry.is_file():
-                        yield from [
+                        yield from {
                             entry.name.removesuffix(suffix)
                             for suffix, _ in self._loaders
                             if entry.name.endswith(suffix)
-                        ]
+                        }
                 except OSError:
                     pass  # ignore exceptions from next(scan_iterator) and os.DirEntry
                 except StopIteration:
