code: def bartlett_window(
      window_length,
      periodic=True,
      *,
      dtype=None,
      layout=None,
      device=None,
      requires_grad=False,
  ):
      # this implementation is based on scipy.signal.windows.bartlett
      # https://github.com/scipy/scipy/blob/v1.11.2/scipy/signal/windows/_windows.py#L625-L721
      if int(window_length) != window_length or window_length < 0:
          raise ValueError(
              "Window length must be a non-negative integer"
          )
      elif window_length == 1:
          return ivy.ones(window_length)
      else:
          N = window_length + 1 if periodic else window_length
  
          res = ivy.arange(0, N, dtype=dtype)
          res = ivy.where(
              ivy.less_equal(res, (N - 1) / 2.0),
              2.0 * res / (N - 1),
              2.0 - 2.0 * res / (N - 1),
          )
  
          return res[:-1] if periodic else res
  
imports: import ivy
  from ivy.func_wrapper import with_supported_dtypes, with_unsupported_dtypes
  from ivy.functional.frontends.torch.func_wrapper import to_ivy_arrays_and_back
label_desc: Use image node_id 1 for calling a global function with example usage: bartlett_window(window_length, periodic) and returns: ivy, unknown