1 files changed, 29 insertions, 0 deletions
diff --git a/challenge-166/lubos-kolouch/python/ch-2.py b/challenge-166/lubos-kolouch/python/ch-2.py
new file mode 100644
index 0000000000..48996dd42e
--- /dev/null
+++ b/challenge-166/lubos-kolouch/python/ch-2.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import os
+
+
+def k_directory_diff(dirs):
+    all_files = set()
+    dir_files = {}
+
+    for directory in dirs:
+        files = set(os.listdir(directory))
+        all_files |= files
+        dir_files[directory] = files
+
+    missing_files = {f: [] for f in all_files}
+
+    for directory, files in dir_files.items():
+        for file in all_files:
+            if file not in files:
+                missing_files[file].append(directory)
+
+    for file, directories in missing_files.items():
+        if directories:
+            print(file, "is missing in", ", ".join(directories))
+
+
+dirs = ["dir_a", "dir_b", "dir_c"]
+k_directory_diff(dirs)