[3.12] gh-126014: Ignore __pycache__-only folders in makefile tests (GH-126066) (#126110)

gh-126014: Ignore `__pycache__`-only folders in makefile tests (GH-126066)
(cherry picked from commit aeafaf4)

Co-authored-by: sobolevn <[email protected]>
Co-authored-by: Tomas R. <[email protected]>

Author: 3 people

Lib/test/test_tools/test_makefile.py

@@ -51,7 +51,10 @@ def test_makefile_test_folders(self):
             if not dirs and not files:
                 continue
             # Skip dirs with hidden-only files:
-            if files and all(filename.startswith('.') for filename in files):
+            if files and all(
+                filename.startswith('.') or filename == '__pycache__'
+                for filename in files
+            ):
                 continue
 
             relpath = os.path.relpath(dirpath, support.STDLIB_DIR)