diff --git a/python/0076-minimum-window-substring.py b/python/0076-minimum-window-substring.py
index 6cd604ac6..66b2f96e0 100644
--- a/python/0076-minimum-window-substring.py
+++ b/python/0076-minimum-window-substring.py
@@ -10,8 +10,7 @@ def minWindow(self, s: str, t: str) -> str:
         have, need = 0, len(countT)
         res, resLen = [-1, -1], float("infinity")
         l = 0
-        for r in range(len(s)):
-            c = s[r]
+        for r, c in enumerate(s):
             window[c] = 1 + window.get(c, 0)
 
             if c in countT and window[c] == countT[c]: