code: def test_too_few_devices():
      model = nn.Sequential(
          nn.Linear(1, 1),
          nn.Linear(1, 1),
          nn.Linear(1, 1),
          nn.Linear(1, 1),
      )
  
      with pytest.raises(IndexError):
          # len(balance) > len(devices)
          model = Pipe(model, balance=[1, 1, 1, 1], devices=["cpu"])
  
imports: from collections import OrderedDict
  from copy import deepcopy
  import time
  import pytest
  import torch
  from torch import nn
  from fairscale.nn.pipe import Pipe
label_desc: Use image node_id 7 for calling a global function with example usage: test_too_few_devices() without return types