docstr: 测试张量列表的转换
docstr_tok: ["\u6d4b\u8bd5\u5f20\u91cf\u5217\u8868\u7684\u8f6c\u6362"]
code: def test_list_transfer(self):
      """
      测试张量列表的转换
      """
  
      paddle_list = [paddle.rand((6, 4, 2)).cuda(1) for i in range(10)]
      res = paddle2torch(paddle_list)
      assert isinstance(res, list)
      for t in res:
          self.check_torch_tensor(t, "cuda:1", False)
  
      res = paddle2torch(paddle_list, device="cpu", no_gradient=False)
      assert isinstance(res, list)
      for t in res:
          self.check_torch_tensor(t, "cpu", True)
  
imports: import pytest
  from fastNLP.envs.imports import _NEED_IMPORT_JITTOR, _NEED_IMPORT_PADDLE, _NEED_IMPORT_TORCH
  from fastNLP.modules.mix_modules.utils import paddle2torch, torch2paddle, jittor2torch, torch2jittor
label_desc: Use image node_id 4 for calling the TestPaddle2Torch obj's underlying member method code with example usage: obj.test_list_transfer() without return types