Add missing colon to slice

somacdivad · somacdivad · commit 209af99970e0 · 2019-09-10T00:02:15.000-05:00
diff --git a/ch11-file-input-and-output/2-working-with-paths-in-python.py b/ch11-file-input-and-output/2-working-with-paths-in-python.py
@@ -33,7 +33,7 @@
     for file_name in file_names:
         file_path = os.path.join(current_folder, file_name)
         if file_path.lower().endswith(".png"):
-            new_path = file_path[-4] + "_backup.png"
+            new_path = file_path[:-4] + "_backup.png"
             os.rename(file_path, new_path)
 
 
