code: def test_copy_param_scalar(self):
      a = nn.Module()
      a.p = nn.Parameter(torch.Tensor([1]))
      b = nn.Module()
      b.p = nn.Parameter(torch.Tensor([2]))
  
      self.assertNotEqual(a.p.detach().numpy(), b.p.detach().numpy())
  
      # Copy b's parameters to a
      copy_param.copy_param(a, b)
  
      self.assertEqual(a.p.detach().numpy(), b.p.detach().numpy())
  
file_path: pfrl/tests/utils_tests/test_copy_param.py
imports: import unittest
  import numpy
  import torch
  import torch.nn
  from pfrl.testing import torch_assert_allclose
  from pfrl.utils import copy_param
label_desc: Use image node_id 2 for calling the TestCopyParam obj's underlying member method code with example usage: obj.test_copy_param_scalar() without return types