input: Write a python function to display a progress bar based on the iteration and total.
  assert progress_bar(0, 10) == '\r |█████---------------------------------------------| 10.0% Complete'
  assert progress_bar(5, 10) == '\r |█████████████████████████-------------------------| 60.0% Complete'
  assert progress_bar(9, 10) == '\r |██████████████████████████████████████████████████| 100.0% Complete'
output: def progress_bar(iteration, total):
      length = 50
      percent = 100 * (iteration / float(total))
      filled_length = int(length * iteration // total)
      bar = '█' * filled_length + '-' * (length - filled_length)
      return f'\r |{bar}| {percent:.1f}% Complete'