diff --git a/python/extract.py b/python/extract.py
index 69b4d95..3c26267 100644
--- a/python/extract.py
+++ b/python/extract.py
@@ -105,4 +105,4 @@ elif len(sys.argv) > 1:
 else:
     print("extract [filepath]")
 
-# ......
+# .......