Add duplicate_dirs.py.

duplicate_dirs.py

@@ -0,0 +1,14 @@
+from voussoirkit import spinal
+
+basenames = {}
+
+walker = spinal.walk_generator('.', yield_directories=True, yield_files=False)
+for directory in walker:
+    basenames.setdefault(directory.basename, []).append(directory)
+
+for (basename, dupes) in basenames.items():
+    if len(dupes) == 1:
+        continue
+    for dupe in dupes:
+        print(dupe.absolute_path)
+    print()