input: Write a python function to handle IndexError and return a specific message if an index is out of range.
  assert handle_index_error([1, 2, 3], 4) == 'Index not found!'
  assert handle_index_error([10, 20, 30], 1) == 20
  assert handle_index_error([], 0) == 'Index not found!'
output: def handle_index_error(lst, index):
      try:
          return lst[index]
      except IndexError:
          return 'Index not found!'