diff --git a/patterns/python/fast_and_slow_pointers.py b/patterns/python/fast_and_slow_pointers.py
index be6ed55..fc63d36 100644
--- a/patterns/python/fast_and_slow_pointers.py
+++ b/patterns/python/fast_and_slow_pointers.py
@@ -1,3 +1,4 @@
+#added a change Upkar
 class ListNode:
     def __init__(self, x):
         self.val = x