--- title: for_each_right tags: list,beginner --- Executes the provided function once for each list element, starting from the list's last element. Use a `for` loop in combination with slice notation to execute `fn` for each element in `itr`, starting from the last one. ```py def for_each_right(itr, fn): for el in itr[::-1]: fn(el) ``` ```py for_each_right([1, 2, 3], print) # 3 2 1 ```